Speech Sound Development Chart: Ages for Each Sound

Quick answer

Most English consonants are acquired by about age 5; r, th and zh can take until 6 or later

Speech sound development varies, but there are clear patterns. A review of English consonant acquisition in the United States found that children acquire most consonants by around five years. Early-developing sounds include p, b, m, n, h, w, t and d, usually by around three years. Sounds such as k, g, f, y and ng typically follow by around three to four. Later sounds, such as s, z, l, sh, ch, j and v, are often mastered around four to five, while r, th (as in “think” and “this”) and zh (as in “measure”) may take until six or later. A cross-linguistic review of 27 languages also found that children acquire most consonants by about five years. Consonant clusters such as “sp” and “tr” follow. A speech-language pathologist can assess children whose speech is difficult to understand for their age.

Important. Seek advice from a speech-language pathologist if your child is hard for familiar people to understand by age three, difficult for strangers to understand by age four, has many sounds missing for their age, is frustrated with talking, or if you have any concerns about hearing.

Approximate ages most children say each sound

By about 2–3 years: p, b, m, n, h, w, t, d.
By about 3–4 years: k, g, f, y, ng (as in “sing”).
By about 4–5 years: s, z, l, sh, ch, j (as in “jump”), v.
By about 5–6 years: r, and th (as in “think” and “this”).
By about 6 years or a little later: zh (as in “measure”), and th for some children.
Ages reflect when most children produce the sound accurately in words; many start using sounds earlier.
Ages vary between studies and between children.

What the research says

A review of studies of English-speaking children in the United States combined data from many studies and found that most consonants were acquired by around five years, with a few later sounds acquired by about six. Earlier charts sometimes suggested later ages for sounds such as s and r, so recent reviews encourage professionals to use updated norms. A cross-linguistic review of 27 languages found similar results across languages: children acquired most consonants by five years. ASHA notes that speech sound development is gradual and that variation between children is normal.

Vowels and early sounds

Babies begin cooing with vowel-like sounds in the first months, then babble with consonant–vowel combinations such as “baba” and “dada” from around six to ten months. Most vowels are produced accurately by around three years. Early words often use the sounds the child can already make, and they may be simplified, such as “baba” for “bottle”.

Consonant clusters

Clusters combine two or more consonants, such as “sp” in “spoon”, “bl” in “blue” or “str” in “string”.
Young children often reduce clusters: “poon” for “spoon”.
Many clusters are mastered by around four to five years.
Clusters with r and l, and three-consonant clusters, may take longer.
Cluster reduction is one of the common phonological processes; see phonological processes.

How clear should my child’s speech be?

Around 2 years: familiar adults understand about half.
Around 3 years: familiar adults understand about three quarters.
Around 4 years: most speech is understood by unfamiliar listeners, even with errors.
Errors on later sounds such as r and th are common until around five or six.

Common errors that are usually typical

“Wabbit” for “rabbit” at three or four.
“Fink” for “think” at four or five.
“Tat” for “cat” at two or early three.
“Poon” for “spoon” at three.
A mild lisp at three or four.

Signs that may need assessment

Speech that is very hard to understand for the child’s age.
Leaving off the first sounds of words.
Replacing many different sounds with one sound.
Inconsistent errors on the same word.
Using mostly vowels or very few consonants after age two.
Frustration, avoidance of talking, or teasing at school.
A lisp that continues beyond around age five, or air coming out the sides of the mouth.
A history of ear infections or concerns about hearing.

How to support speech development at home

Talk and read with your child every day.
Repeat words back correctly without asking them to repeat them.
Emphasise sounds slightly in your own speech.
Play sound and rhyming games.
Reduce background noise when talking.
Allow time for your child to finish speaking.
Activities are in speech therapy exercises.

Bilingual children

Children learning more than one language develop speech sounds in each language, sometimes at slightly different times, and may mix sounds between languages. Bilingualism does not cause speech sound disorders. Assessments should consider all the languages a child speaks, and parents should continue to use the language they are most comfortable with at home.

Three common situations

Three-year-old saying “wed” for “red”: typical; monitor.
Four-year-old whom strangers rarely understand: arrange a speech assessment.
Six-year-old still saying “fink” for “think”: often still within normal variation, but a check can help if it is affecting school.

Lisps and the s sound

A frontal lisp, where the tongue pushes forward between the teeth so “sun” sounds like “thun”, is common in young children and often resolves by around four to five years. A lateral lisp, where air escapes over the sides of the tongue and the sound is “slushy”, is not part of typical development and is worth assessing at any age. Speech therapy for lisps is usually short and effective.

Key points to remember

Children learn sounds in a predictable order.
Most consonants are acquired by about five years.
R, th and zh are among the last sounds learned.
Seek help if speech is hard to understand for the child’s age.

Questions about speech sound development

These answers are general information and do not replace an examination or individual medical advice.

At what age should a child say the r sound?

Many children master r around five to six years, though some take a little longer.

When should a child be able to say s?

Most children produce s correctly by around four to five years.

Is it normal for a four-year-old to say “f” instead of “th”?

Yes. Th is one of the last sounds learned.

When should I worry about my child’s speech?

If familiar people struggle to understand them by three, or strangers by four, or if you have any concerns.

Do boys learn speech sounds later than girls?

Some studies find small differences, but they are not large enough to explain significant delays.

Sources

This guide is for general information and does not replace medical advice. How a problem is diagnosed and treated depends on your examination and medical history. If you think you have an emergency, contact your local emergency services.