
Last updated 2026-07-10
TL;DR
Most toddlers say their first word around 12 months, reach 50+ words by 24 months, and start two-word phrases between 18 and 24 months. Missing two or more milestones in a row is a clear signal to request a speech-language pathology evaluation. Early intervention before age 3 produces the best outcomes.
What are the normal speech milestones for toddlers by age?
Babies communicate long before words show up. Toddlers then explode in vocabulary between 18 and 24 months. By age 3, most kids are holding real conversations. Here's the full picture, age by age.
The American Speech-Language-Hearing Association (ASHA) and the American Academy of Pediatrics (AAP) use overlapping but slightly different milestone charts. The numbers below reflect both, plus the CDC's Learn the Signs. Act Early. developmental data [1][2][3].
6 months. A typically developing baby coos, makes raspberries, and babbles strings of vowel sounds. They turn their head toward sound and respond to their name. No words yet, but the auditory-vocal loop is already running.
9 months. Babbling gets consonants: "babababa," "mamama," "dadada." The baby combines sounds that start to sound like real words even though meaning isn't attached yet. They also point, gesture, and make eye contact to share attention.
12 months. First real word. ASHA defines a "real word" as a consistent sound pattern the child uses with apparent meaning, so a child who always says "ba" when they see a bottle counts [1]. Most kids have 1-3 words at this age. They also wave bye-bye and respond to simple commands like "come here."
15 months. Typically 3-5 words, some kids more. Children this age point to request things and to show adults interesting objects, which researchers call declarative pointing. That gesture is a strong predictor of later language development.
18 months. ASHA expects at least 10 words [1]. Many children have 20-50. They name familiar people, objects, and body parts. They follow two-step directions when one step is familiar ("Get your shoes and bring them here").
24 months. The AAP flags any child with fewer than 50 words at 24 months as needing evaluation [2]. The vocabulary explosion typically hits somewhere between 18 and 21 months, and many children pick up several new words a day during this window. Two-word phrases like "more milk," "daddy go," or "big truck" should appear by the second birthday.
30 months. Three-word phrases are typical. Speech is about 50% understandable to a stranger.
36 months (age 3). Most children use 4-5 word sentences, have a vocabulary of around 1,000 words, and are understood by strangers about 75% of the time [1][3]. They can tell a simple story and answer "who," "what," and "where" questions.
These ranges are norms, not ceilings or floors. A child who walks late often talks on time. A child who talks late may be fine or may need support. The milestone numbers tell you when the evidence says to stop waiting and start asking.
What are the red flags for speech delay at 12, 18, and 24 months?
The CDC's milestone checklist and ASHA's clinical guidelines agree on a core set of warning signs. Any single red flag below warrants a mention to your pediatrician. Two or more at the same age is a reason to ask for a referral to a speech-language pathologist (SLP) right now, not at the next well-child visit [1][3].
At 12 months:
- No babbling
- No gestures (pointing, waving, reaching up)
- Does not respond to their own name
- No single words
At 18 months:
- Fewer than 10 words
- No pointing to show you things
- Does not follow simple one-step directions without a gesture cue
- Lost words they previously had (regression is always a red flag at any age)
At 24 months:
- Fewer than 50 words
- No two-word phrases (not counting imitated or memorized phrases)
- Strangers cannot understand any of what they say
- Still no consistent pointing or functional gestures
Word regression deserves its own sentence: if a child loses words they clearly used to have, get an evaluation immediately regardless of age. The AAP lists regression as a reason to evaluate without waiting [2].
The 24-month threshold is probably the most researched in pediatric speech. Toddlers flagged as late talkers at 24 months were significantly more likely to show persistent language difficulties years later, even when early vocabulary gaps appeared to close by kindergarten [4]. "Late bloomer" is real, but it's not a reason to skip evaluation. Evaluation tells you which kind your child is.
How many words should a 2-year-old say?
At least 50 words and at least one two-word combination. That's the number the AAP and ASHA both use [1][2].
The 50-word threshold is not arbitrary. It marks the point where most children's word networks are dense enough to support the vocabulary explosion and, more importantly, early grammar. Kids who hit 50 words tend to start combining them shortly after. Kids still under 10 or 15 words at 24 months are working with a much thinner foundation.
What counts as a word? A consistent, intentional sound pattern that stands in for meaning. "Wawa" for water counts. "Moo" for cow counts. So do animal sounds when the child uses them as names rather than just imitating. Babble strings that aren't tied to anything specific don't count.
What doesn't count toward the 50: purely imitated phrases repeated right after an adult says them. That's echolalia, and while it's a meaningful communication behavior, it doesn't reflect the same underlying word learning. If your child repeats everything you say but starts very little language on their own, mention that to your pediatrician separately. It warrants its own discussion.
Is my toddler a late talker or does something else explain the delay?
"Late talker" has a specific clinical meaning: a child between 18 and 30 months with age-appropriate comprehension, social skills, motor skills, and play, but an expressive vocabulary below expectations. They understand more than they say. About 13-17% of 24-month-olds meet this definition, based on research by Rescorla and colleagues published in the Journal of Speech, Language, and Hearing Research [4].
About half of late talkers catch up on their own by age 4. The other half do not, and those children benefit enormously from early SLP support. The problem is you cannot tell from the outside which half your child is in at age 2. Waiting to find out costs the child time during the highest-plasticity window of language development.
Other conditions that can produce speech and language delays include:
Hearing loss. Undetected mild-to-moderate hearing loss is one of the most commonly missed causes of speech delay. If your child has not had a formal audiological evaluation, request one before or alongside the SLP evaluation. The two assessments are different and you need both.
Autism spectrum. Language delay is one of several possible features of autism, but not all autistic children have language delays and not all late talkers are autistic. ASHA notes that joint attention (looking at you, then at an object, then back at you) is an important distinction: late talkers typically have intact joint attention, while children with autism often do not [1]. For more on this, see our article on autism spectrum speech therapy.
Childhood apraxia of speech. This is a motor planning disorder, not a vocabulary problem. A child with childhood apraxia of speech may have ideas they want to express but cannot consistently sequence the mouth movements to do it. CAS needs a specific kind of therapy and responds poorly to the wait-and-see approach [12].
Developmental language disorder. A child with normal hearing, no autism, and no motor issues can still have a primary language learning difficulty. DLD affects roughly 7% of children and often goes unidentified until school age, when it starts affecting reading [5].
A qualified SLP can sort between these. Pediatricians can refer but cannot diagnose these conditions themselves.
What does the toddler speech milestone timeline look like at a glance?
The table below pulls together the ASHA and AAP consensus milestones for expressive speech. Use it as a reference, not a scorecard [1][2][3].
| Age | Expressive milestone | Comprehension milestone | Red flag if missing |
|---|---|---|---|
| 6 mo | Babbles with consonant-vowel combinations | Turns toward voice | No babbling at all |
| 12 mo | 1-3 words with consistent meaning | Follows "no"; responds to name | No words; no pointing |
| 15 mo | 3-5 words; uses gestures to communicate | Points to 1-2 body parts when named | Fewer than 3 words |
| 18 mo | 10+ words; uses words to request and label | Follows 2-step commands | Fewer than 10 words; regression |
| 24 mo | 50+ words; 2-word phrases | Understands 2-step unrelated instructions | Fewer than 50 words; no phrases |
| 30 mo | 3-word phrases; asks simple questions | Understands basic "why" | Strangers cannot understand any speech |
| 36 mo | 4-5 word sentences; ~1,000 word vocabulary | Answers "who," "what," "where" | Less than 75% intelligibility to strangers |
One note on intelligibility: these figures are averages. Some perfectly typically developing kids are less clear at 3 and sharpen up fast by 4. The intelligibility numbers matter most when combined with other delays, not in isolation.
How can parents support speech development at home?
You don't need a degree to do this well. Research on parent-implemented language strategies consistently shows that how parents talk with toddlers predicts vocabulary size more reliably than most other variables [6].
The highest-evidence strategy has a name: "serve and return," from the Harvard Center on the Developing Child. When your child vocalizes, gestures, or looks at something, you respond, name it, and expand it. Your child points at the dog. You say "dog. Brown dog. The dog is running." That responsive extension is the engine of language learning [6].
Other strategies with strong evidence:
Self-talk and parallel talk. Narrate what you're doing ("I'm cutting the apple. The apple is red.") and what your child is doing ("You're stacking the blocks. One, two, three blocks."). This floods the environment with language matched to what the child is looking at.
Reduce questions, increase comments. Most parents naturally ask their child a lot of questions. "What's that? What color is it? Can you say dog?" That creates pressure that reduces spontaneous output for many children. Swap some questions for observations: "Oh, a dog. He's big."
Read together. Shared book reading is linked to higher vocabulary and later reading ability. You don't have to read the words on the page. Pointing at pictures, labeling objects, and following your child's gaze is enough at this age.
Wait. After you say something, count to five silently before filling the silence. Kids with slower processing speeds or speech-motor delays need more time than adults naturally give them.
None of this replaces an SLP if your child needs one. But it supplements therapy and keeps language learning going between sessions.
When should I ask for a speech-language pathology evaluation?
Ask now if any of the following are true:
- Your child is 12 months with no words and no pointing
- Your child is 18 months with fewer than 10 words
- Your child is 24 months with fewer than 50 words or no two-word phrases
- Your child lost words they used to say
- You have a gut feeling something is off, even if the pediatrician said to wait
The "gut feeling" one matters. ASHA explicitly lists parental concern as a referral indicator [1]. You see your child every day. Pediatricians see your child for 15 minutes at a well-child visit. Your observation is data.
How to get an evaluation: ask your pediatrician for a referral to an SLP, or contact your local early intervention program directly if your child is under 3. Under Part C of IDEA (the Individuals with Disabilities Education Act), every state must provide free evaluations and services for children under 36 months who have developmental delays [7]. You do not need a diagnosis to request this. You call, they evaluate, and if your child qualifies they provide services at no cost to your family.
For more on the process, see our guide to early intervention and what speech therapy actually involves.
If your child is over 3, the process shifts to the school district under Part B of IDEA. Contact your district's special education office directly.
What happens during a toddler speech-language evaluation?
A pediatric SLP evaluation for a toddler is not a test in the usual sense. With kids under 3, most of it looks like play.
The SLP will typically:
- Take a detailed case history (pregnancy, birth, ear infections, family history of language delays, what you've observed at home)
- Observe your child in unstructured play
- Use standardized assessments, usually the Preschool Language Scales (PLS-5) or Receptive-Expressive Emergent Language Test (REEL-4), to compare your child's performance to age norms
- Assess both expressive language (what your child produces) and receptive language (what they understand)
- Check oral motor function
- Review or recommend an audiological evaluation
The evaluation takes 60-90 minutes on average. You'll get a written report with standard scores, percentile ranks, and, if indicated, a diagnosis and treatment recommendations.
Standard scores matter here. A score of 85-115 is within one standard deviation of the mean, which is considered typical. Scores below 77-78 (roughly 1.5 SD below mean) typically qualify a child for services under IDEA [7]. The exact cutoff varies by state and program.
If your child qualifies, the SLP will write an Individualized Family Service Plan (IFSP) for children under 3, or an IEP for school-age children. These plans set out therapy goals, frequency, and service setting.
Does screen time affect toddler speech development?
Yes, but the mechanism matters.
The AAP recommends no screen time (other than video chatting) for children under 18 months, and limited high-quality programming for ages 18-24 months with a caregiver co-viewing and talking about what's on screen [2]. The reason isn't that screens are toxic. It's that screen time displaces conversation time, and conversation is what drives language growth.
A 2019 study published in JAMA Pediatrics found that each additional 30 minutes of handheld screen time at 18 months was associated with a 49% increased odds of expressive speech delay [8]. That's a correlational finding. It doesn't prove screens cause delays, and confounders are real. But the pattern shows up across multiple studies.
Video chat (FaceTime, Zoom) is genuinely different and appears to support language learning. The live turn-taking, facial expressions, and social responsiveness of a real conversation with a grandparent do the things pre-recorded video cannot.
The practical takeaway: if your child watches a lot of passive video and has a speech delay, that's worth noting to the SLP. Cutting passive screen time and replacing it with conversation-heavy activities is one of the lowest-cost interventions available.
How do bilingual or multilingual households affect speech milestones?
This is probably the most misunderstood question in pediatric speech. The research is clear: bilingualism does not cause speech delays [9].
Bilingual toddlers sometimes have fewer words in each individual language than monolingual peers. But count their total vocabulary across both languages (called conceptual or total vocabulary) and they match monolingual children. ASHA states plainly that bilingualism is not a cause of speech or language disorders, and a bilingual child should be evaluated in both languages [9].
What does look different in bilingual development:
- Code mixing (using words from both languages in one sentence) is normal and not a sign of confusion
- Dominance in one language over the other is typical and shifts with exposure
- Short periods of silence when switching to a new dominant language environment (like starting preschool in the majority language) are normal
If you're seeking an evaluation for a bilingual child, insist on an SLP with bilingual assessment training or a bilingual SLP. Assessments normed on monolingual English speakers will undercount a bilingual child's abilities and can produce false positives for delay.
What if my child uses an app or AAC device instead of words?
Augmentative and alternative communication (AAC) does not replace speech. The evidence consistently shows that AAC supports speech development rather than substituting for it [10].
If your child isn't talking at an age where they should be, the fear is sometimes that giving them another way to communicate will kill their motivation to speak. Research does not support that fear. Systematic reviews and follow-up studies have found that introducing AAC does not reduce vocalization and in many cases increases it, because the child's communication frustration drops [10].
AAC devices range from simple low-tech picture boards to speech-generating devices. What's right for your child depends on their motor abilities, cognitive profile, and communication goals. An SLP should guide that choice.
For toddlers who aren't yet speaking or are minimally verbal, even starting with a few core vocabulary symbols ("more," "help," "stop," "go") can cut frustration and begin building the communication habits that eventually transfer to speech.
If your child's SLP or pediatrician is hesitant to introduce AAC because it might "make them lazy," that position is not supported by current evidence. Push for a second opinion.
Some families use apps like Little Words alongside SLP-guided therapy. The key is that any technology should be part of a plan, not a replacement for evaluation.
What do parents often get wrong about toddler speech milestones?
A few patterns come up over and over.
"Einstein was a late talker." He may have been. It doesn't mean your child will be fine without support. Even if the story is true, Einstein's developmental history doesn't change what the evidence says about your child's outcomes.
"Boys talk later than girls." There's a small, real sex difference in early language development. Boys on average say first words slightly later and hit milestones a few weeks behind girls. But the clinical milestones already account for that variation. A boy with fewer than 50 words at 24 months is still a late talker by clinical definition.
"My older child talked late and turned out fine." Maybe. But sibling development doesn't predict much at the individual level, and families with one late talker have a higher base rate of language difficulties. That's a reason to be more watchful, not less.
"The pediatrician said to wait." Pediatricians vary enormously in their comfort with early referrals. Under IDEA, you have the right to request an early intervention evaluation on your own, independent of the pediatrician [7]. You can call your state's early intervention program directly. Find your state's contact through the CDC or the IDEA site.
"They understand everything, so they're fine." Comprehension and expression can split apart. Good comprehension is genuinely reassuring, but it doesn't rule out expressive delay, apraxia of speech, or social communication difficulties that deserve a look.
What does speech therapy for toddlers actually look like?
Early intervention speech therapy for toddlers under 3 is play-based. An SLP working with a 20-month-old is not drilling flashcards. They're on the floor building towers and narrating, following the child's lead and folding language targets into natural routines.
Therapy frequency varies by severity and diagnosis. Children with mild delays might get 30-minute sessions once a week. Children with CAS or significant delays often need two or three sessions per week. IDEA Part C services for children under 3 are delivered in the "natural environment" whenever possible, meaning your home or childcare setting, not a clinic.
Parent coaching is a core part of modern early intervention. Research from the Hanen Centre and others shows that parent-implemented language strategies produce better long-term outcomes than child-only clinic therapy, because parents are there for the hundreds of hours the SLP is not [6].
Things a good toddler SLP will do:
- Set specific, measurable goals ("Johnny will use two-word combinations to request in at least 3 of 5 opportunities within 12 weeks")
- Teach you what to do at home
- Reassess and update goals regularly
- Coordinate with other providers if needed
If your child's therapy sessions never involve you and the SLP never sends home strategies, ask about that directly. Parent coaching is not optional in evidence-based early intervention.
For families looking for support between sessions, the Little Words app offers structured language activities built for the home. It works best as an add-on to SLP-guided care, not a replacement for it.
Frequently asked questions
What is the average age for a toddler to say their first word?
Most children say their first recognizable word between 11 and 14 months, with 12 months as the typical benchmark used by both ASHA and the AAP. "First word" means a consistent sound pattern used with apparent meaning, more than babble. If no words are present by 16 months, request a speech-language evaluation rather than waiting for the 18-month well-child visit.
How many words should a 1-year-old say?
At 12 months, 1-3 words is typical. By 15 months, most children have 3-5 words. The number matters less at this age than the presence of intentional communication: pointing, reaching, making eye contact to share attention, and responding to their name. A child with zero words and no communicative gestures at 12 months needs evaluation regardless of how many months are left before 15.
My 18-month-old is not talking. Should I be worried?
Yes, in the sense that it warrants action, not panic. ASHA's milestone guidance lists 10 words as typical at 18 months. Fewer than 10, or any word regression, is a reason to request an evaluation now. Under IDEA Part C, you can contact your state's early intervention program directly without a pediatrician referral. Early evaluation costs nothing under that law and gives you real information rather than worry.
What is the difference between a speech delay and a language delay?
Speech delay refers to difficulty producing sounds and words clearly, meaning articulation or motor execution. Language delay refers to limited vocabulary, difficulty understanding, or trouble combining words into phrases, meaning the content and structure of communication. A child can have one without the other. A speech-language pathologist evaluates both. The distinction matters because the causes and treatments differ significantly.
Can a toddler have a speech delay and still be autistic?
Yes. Language delay is one possible feature of autism, but it's not universal. Some autistic children speak on time or early; others are minimally verbal or nonspeaking. A speech-language evaluation and a developmental pediatrician assessment are separate processes. Getting an SLP evaluation does not rule in or rule out autism, and waiting for an autism determination before starting speech therapy is generally not in a child's best interest.
Do late talkers always catch up on their own?
Roughly half of children identified as late talkers at age 2 catch up by age 4 without intervention. The other half do not, and those children benefit from early SLP support. The trouble is there's no reliable way to predict at 18-24 months which group your child is in. Early evaluation and, if indicated, early therapy reduces the risk of persistent delays regardless of which group your child would have fallen into.
Does talking to your baby really affect how fast they learn to talk?
Yes, substantially. The quantity and quality of child-directed speech is one of the strongest predictors of vocabulary size and language development. Early research by Hart and Risley found a correlation between the number of words children heard by age 3 and their vocabulary later on. More recent work points to conversational turns, more than raw word count, as the active ingredient. Responsive back-and-forth conversation matters most.
Is it normal for a 2-year-old to be hard to understand?
Somewhat. At 24 months, familiar adults typically understand about 50-75% of what a toddler says. Strangers understand less. Complete unintelligibility at 24 months, even to parents, is a red flag. By age 3, strangers should understand roughly 75% of speech. Intelligibility below that threshold at 3, combined with limited vocabulary or phrase use, is a reason for an SLP evaluation focused on both articulation and language.
What is the difference between late talking and childhood apraxia of speech?
A late talker has few words but attempts a variety of sounds. A child with childhood apraxia of speech (CAS) has difficulty with the motor sequencing needed to produce sounds consistently, so their speech may be inconsistent, effortful, or full of groping mouth movements. CAS is a motor planning disorder, not a vocabulary problem. It requires a specific type of intensive, motor-based therapy and responds poorly to the standard language stimulation used for late talkers.
Can I refer my child for early intervention speech therapy myself?
Yes. Under Part C of IDEA, parents can self-refer to their state's early intervention program without a doctor's referral. The program must evaluate the child at no cost within 45 days of referral. If the child qualifies, services are free or low-cost. To find your state's early intervention contacts, search your state name plus "Part C early intervention" or visit the IDEA website at sites.ed.gov/idea.
Does bilingualism cause speech delays?
No. Bilingualism does not cause speech or language disorders. ASHA is explicit on this point. Bilingual toddlers may have smaller vocabularies in each individual language, but total vocabulary across both languages matches monolingual peers. If a bilingual child shows signs of delay, they should be evaluated in both languages by an SLP with bilingual assessment training to avoid false positives from monolingual-normed tests.
How long does early intervention speech therapy usually last for toddlers?
It varies by diagnosis and severity. Children with mild expressive delays might need 3-6 months of weekly therapy. Children with more significant delays, CAS, or autism-related communication differences often continue therapy for years. Progress is reassessed regularly and goals are updated. Under IDEA Part C, services end at the child's third birthday, at which point the child transitions to the school district's Part B services if they still qualify.
What questions should I ask at my toddler's speech evaluation?
Ask: What are my child's standard scores in expressive and receptive language? Does my child qualify for services, and under what criteria? What specific goals would you target first? What should I do at home between sessions? Will you involve me in therapy sessions? How will we know if we're making progress? A good SLP answers all of these directly. Vague answers to concrete questions are a signal to seek a second opinion.
Are there any speech apps that actually help toddlers talk?
The evidence for standalone apps producing speech gains is limited. Apps can support parent coaching strategies, provide structured language activities, and keep practice consistent between therapy sessions. They work best as a supplement to SLP-guided therapy, not a replacement. Look for apps built around evidence-based strategies like modeling, responsive interaction, and core vocabulary, and check whether the app was developed with SLP input.
Sources
- American Speech-Language-Hearing Association (ASHA), Speech and Language Developmental Milestones: ASHA milestone benchmarks: 10 words at 18 months, 50 words and two-word phrases at 24 months, parental concern as a referral indicator, joint attention distinction between late talkers and autism
- American Academy of Pediatrics (AAP), Developmental Surveillance and Screening: AAP flags fewer than 50 words at 24 months as requiring evaluation; word regression is a reason to evaluate without waiting; screen time guidelines for children under 18 months
- CDC, Learn the Signs. Act Early. Developmental Milestones: CDC milestone checklist for speech and language from 2 months through 5 years; 75% intelligibility to strangers at age 3; warning signs at each age
- Rescorla, L. (2005). Age 17 language and reading outcomes in late-talking toddlers. Journal of Speech, Language, and Hearing Research, 48(2), 459-472: Approximately 13-17% of 24-month-olds meet late-talker criteria; late talkers identified at 24 months are more likely to have persistent language difficulties at school age
- ASHA, Spoken Language Disorders practice portal: Developmental language disorder affects roughly 7% of children and often goes unidentified until school age
- Harvard Center on the Developing Child, Serve and Return: Serve-and-return responsive interaction is the primary driver of language and brain development in early childhood; parent-implemented strategies produce better long-term outcomes
- U.S. Department of Education, Individuals with Disabilities Education Act (IDEA): Under Part C of IDEA, every state must provide free evaluations and services for children under 36 months with developmental delays; standard score cutoffs for eligibility; parents can self-refer
- Birken CS et al. (2019). Association Between Handheld Screen Time and Child Language at 18 Months. JAMA Pediatrics, 173(12), 1188-1190: Each additional 30 minutes of handheld screen time at 18 months was associated with a 49% increased odds of expressive speech delay
- ASHA, Bilingual Service Delivery practice portal: Bilingualism does not cause speech or language disorders; bilingual children should be evaluated in both languages; code mixing is normal
- ASHA, Augmentative and Alternative Communication (AAC) practice portal: AAC does not replace speech development and in many cases supports it; introduction of AAC does not reduce vocalization
- National Institute on Deafness and Other Communication Disorders (NIDCD), Speech and Language: Overview of speech and language milestones from birth through age 5, including hearing and audiological evaluation recommendations alongside SLP evaluation
- ASHA, Childhood Apraxia of Speech practice portal: CAS is a motor planning disorder requiring specific intensive motor-based therapy; differs from late talking in cause and treatment approach
