About the Baby Teething Chart
This baby teething chart uses the American Dental Association (ADA) primary tooth eruption chart to show which of the 20 baby teeth usually appear by a given age. Enter your baby’s age in months and you will see how many teeth are typically through, which teeth could be erupting right now, and which ones to expect next — plus the full chart with the usual age at which each tooth falls out later in childhood.
It is for parents wondering whether a fussy, drooling baby might be teething, or whether a late or early first tooth is anything to worry about. If you add how many teeth your baby has now, the tool compares that with the range implied by the ADA age windows.
The ranges describe most children, not all: the first tooth commonly appears around 6 months, but some babies are born with a tooth and others get their first one after their first birthday. Order and timing vary from child to child. The ADA recommends a first dental visit after the first tooth appears and no later than the first birthday; ask your dentist or pediatrician if you have concerns.
With the default inputs, the teeth usually through by this age is 4. Change any value above to recalculate instantly.
How to use the baby teething chart
- 1Enter your baby’s age in months.
- 2Optionally enter how many teeth have come through so far.
- 3See how many teeth are typical and which may be erupting now.
- 4Check the chart for the next teeth to expect and when they will fall out.
Formula and method
Each of the 10 tooth types in the ADA chart (five upper, five lower) has an eruption window in months, for example 6–10 months for the lower central incisors and 25–33 months for the upper second molars. Because every type comes in as a left-right pair, each type counts as two teeth.
At a given age the lower bound counts teeth whose window has already closed (most children have them), and the upper bound counts teeth whose window has opened (some children have them). A tooth count between the two is typical. Teeth whose window is open right now are listed as possibly erupting, which is when teething symptoms such as drooling, chewing and gum swelling are most likely.
- Window
- ADA age range (months) in which a tooth typically erupts
- Age
- Baby’s age in months (decimals allowed)
Worked examples
12-month-old with 6 teeth
By 12 months the windows for the lower central incisors (6–10 months) and upper central incisors (8–12 months) have closed, so 4 teeth are usually in. The upper and lower lateral incisors have windows that have opened, so up to 8 is typical; 6 teeth is right in that range.
9-month-old with no teeth yet
At 9 months no eruption window has closed yet, while the lower centrals (from 6 months), upper centrals (from 8) and upper laterals (from 9) may have started. A toothless 9-month-old is still within the typical 0–6 range.
18-month-old with 4 teeth
By 18 months the windows for the four incisor types and the lower first molars have closed (10 teeth), and the upper first molars and both canines may be coming (up to 16). Four teeth is fewer than typical, worth mentioning to the dentist or pediatrician.
Frequently asked questions
When do babies start teething?+
Baby teeth start to come in at about 6 months of age, according to the ADA, with the lower central incisors usually first (6–10 months). Timing varies: some babies get teeth earlier and some not until after their first birthday.
In what order do baby teeth come in?+
Typically lower central incisors, then upper central and lateral incisors, lower lateral incisors, first molars, canines and finally second molars. The canines often arrive after the first molars, which leaves a gap that is normal.
How many baby teeth are there?+
Children have 20 primary teeth: 10 upper and 10 lower, made up of 8 incisors, 4 canines and 8 molars. All 20 are usually in by about 33 months (around age 3).
When do baby teeth fall out?+
The central incisors are usually shed first, at about 6–7 years, followed by the laterals at 7–8 years. First molars go at 9–11 years, and canines and second molars at roughly 9–12 years, according to the ADA chart.
What are common teething symptoms?+
Drooling, chewing on objects, irritability and sore or swollen gums are common. Teething does not typically cause high fever, diarrhea or rashes; call your doctor if your baby has a fever or seems unwell.
When should my baby first see a dentist?+
The ADA recommends a first dental visit within six months after the first tooth appears and no later than the first birthday. Wipe gums and brush the first teeth with a smear of fluoride toothpaste.
This tool gives general estimates and is not medical advice. Talk to a doctor or qualified professional about your health, diet or training.