Reference

Baby First Words Milestone Chart

Vocabulary by age, 12–30 months · Updated 9 July 2026 · 5 min read

If you've searched "how many words should my baby have," you've already noticed the problem. One chart says 50 words at two years old. Another says 50 words at two and a half. A third gives a range so wide it tells you nothing.

They're all quoting real sources. The sources genuinely disagree, and the disagreement is not sloppiness. It's a decision about what a milestone chart is for. Here is the chart, with both answers side by side and a note on which one to use when.

The chart

Quotation marks indicate wording taken directly from the source. CDC entries at 12, 15, 18 and 24 months are paraphrased. Full checklists are linked in Sources.

Why the two columns don't match

The CDC's numbers look late because they aren't averages. In February 2022, the CDC and the American Academy of Pediatrics rebuilt the checklists around the 75th percentile, the age by which roughly three in four children have a skill (Zubler et al., Pediatrics, 2022). The old checklists used the 50th percentile, where half of entirely typical children miss the mark by definition.

That single change moved "about 50 words" from 24 months to 30 months. Toddlers didn't get slower in 2022. The question changed from when does the average child do this to when does not doing this become worth investigating.

The revision had critics, ASHA among them, and the argument is genuinely interesting. We unpack it in when do babies say their first words.

The word explosion

Look at the jump between 18 and 30 months. Many toddlers hit a vocabulary spurt somewhere in the second year and start adding words almost daily. If your child's count has felt stuck for months and then suddenly takes off, that's the classic pattern, not a fluke.

What a chart can't show you, and what a running record can, is the slope.

When to call your pediatrician

Milestones are a guide, not a pass or fail. Still, raise it with your doctor if your child:

• Has no words and little babbling or gesturing by 15 to 18 months
• Isn't combining any two words by around 24 months
• Doesn't seem to understand simple everyday requests
• Loses words or skills they clearly had before

The last one is not a wait-and-see item. Regression warrants a call the week you notice it. And if you're told to wait but your gut disagrees, you can ask for a referral anyway. An evaluation that comes back fine costs you an afternoon.

Counting words for a bilingual child

Never compare one of a bilingual child's languages against the chart above. Count every word in every language, and add them up. A toddler with 30 words in English and 25 in Spanish has 55 words.

So: two entries, not one. More in raising a bilingual baby.

Common questions

How many words should a 2-year-old say?

It depends which chart you read. ASHA lists at least 50 different words at 19 to 24 months. The CDC's checklist places about 50 words at 30 months, because it uses the 75th percentile. At 24 months the CDC looks instead for two words combined, like "more milk", which is the more reliable signal.

How many words should an 18-month-old say?

The CDC's 18-month checklist expects a child to try to say three or more words besides "mama" and "dada". That is a floor, not an average. Many 18-month-olds say considerably more, and comprehension typically runs well ahead of speech at this age.

How do I count words for a bilingual child?

Add every word across every language. Don't merge "dog" and "perro" into one. Core and colleagues (2013) found that total vocabulary matched monolingual norms, while counting by concept flagged significantly more bilingual children as low-average at two of three ages tested.

This chart is general information for parents, not medical advice. It reproduces published developmental benchmarks from the CDC and ASHA. Every child is different. If you have concerns, speak with your pediatrician.