Dental Health Time
My Smile

Kids' Teeth

Adult Teeth Predictor

When do kids lose teeth? Enter your child's birth date to see which baby teeth usually fall out and which adult teeth come in, year by year until 21, plus the check-ups to plan for.

Example shown. Enter your child's birth date.
Your children

Stays on this device. Nothing is sent anywhere.

Age ranges from

Two respected charts that differ a little. ADA is the default.

Calendar reminders

Downloads a calendar file (.ics) with an alert. Nothing is uploaded.

Age

ADA ranges

Baby teeth in20
Adult teeth in0
Coming in now0

Next 12 months

    Drag to look ahead. Shading shows what's typical at that age, not a prediction for your child.

    UPPERLOWERABCDEFGHIJTSRQPONMLK
    Baby teeth
    UPPERLOWER1234567891011121314151632313029282726252423222120191817
    Adult teeth

    Year by year to age 21

      Check-ups to plan for

      When do kids start losing teeth?

      Most children lose their first baby tooth at around 6 to 7 years, usually one of the lower front teeth (ADA), so that's when the Tooth Fairy usually makes a first visit. The last baby teeth, the canines and back molars, usually come out by about 12. By 21, all 32 adult teeth have usually come in, counting the wisdom teeth (ADA).

      That's a long stretch, and it isn't one tooth after another. For several years your child has a mix of baby and adult teeth. Dentists call this the mixed dentition stage. The calculator above shows that mix at any age: drag the slider to look ahead.

      Which baby teeth fall out first?

      Baby teeth usually fall out in roughly the order they came in, front to back.

      Baby teeth (pair)Usually fall out (ADA)Other reference (AAPD)
      Lower central incisors6–7 years6–7 years
      Upper central incisors6–7 years7–8 years
      Upper and lower lateral incisors7–8 years7–8 years (lower), 8–9 years (upper)
      Upper and lower first molars9–11 years9–11 years (upper), 10–12 years (lower)
      Lower canines9–12 years9–11 years
      Upper canines10–12 years11–12 years
      Upper and lower second molars10–12 years9–12 years (upper), 11–13 years (lower)

      The two charts come from different sources and don't fully agree, which is a good reminder that these are typical ranges, not deadlines. The Baby Teeth Tracker lets you log the real dates for your child.

      When do adult teeth come in?

      Twenty adult teeth replace the 20 baby teeth. The other 12 are molars that come in behind the baby teeth, so nothing has to fall out first.

      Adult teethUpper (ADA)Lower (ADA)
      First molars ("6-year molars")6–7 years6–7 years
      Central incisors7–8 years6–7 years
      Lateral incisors8–9 years7–8 years
      Canines11–12 years9–10 years
      First premolars10–11 years10–12 years
      Second premolars10–12 years11–12 years
      Second molars ("12-year molars")12–13 years11–13 years
      Third molars (wisdom teeth)17–21 years17–21 years

      The AAPD chart gives 5½–7 years for the first molars, 12–14 years for the second molars and 17–30 years for wisdom teeth. Switch the calculator to AAPD to use those ranges.

      The 6-year and 12-year molars: ask about sealants

      The first adult molars (teeth 3, 14, 19 and 30) and the second molars have pits and grooves on their chewing surfaces, and the CDC notes that the back teeth are where 9 in 10 cavities happen. A sealant is a thin protective coating a dentist paints onto those chewing surfaces. The CDC says sealants work best when applied soon after the adult molars come in, around age 6 for the first molars and age 12 for the second molars, and can prevent up to 80% of cavities for 2 years. Pediatric dentists (AAPD) advise sealing at-risk grooves as soon as possible after a tooth comes in.

      The calculator flags both moments and can add them to your calendar.

      Why an orthodontic check by age 7?

      The American Association of Orthodontists recommends a first check-up with an orthodontist by age 7. The AAO explains that the mix of baby and adult teeth at this age helps an orthodontist recognize problems early. A check-up doesn't always lead to braces. If something is worth watching, the AAO says the orthodontist may suggest observation visits instead. Use Age-7 orthodontic check above to put a reminder in your calendar.

      Wisdom teeth in the late teens

      Wisdom teeth (third molars) usually come in between 17 and 21 (ADA). Pediatric dentists (AAPD) advise checking their position and development, usually with an X-ray, during late adolescence, and deciding whether to remove or monitor them before the mid-20s. The calculator sets this reminder at age 16, so it comes up at a regular checkup. If wisdom teeth are removed, the Wisdom Teeth Recovery Tracker helps with the days after.

      How this tool works

      1. It works out your child's age from the birth date you enter. The date stays in your browser and is never sent anywhere.
      2. For each left/right pair of teeth, it takes the published range: the shedding range for baby teeth and the eruption range for adult teeth. ADA is the default; you can switch to AAPD.
      3. Next 12 months lists every pair whose range overlaps the coming year, either because the window is already open or because it opens within 12 months. The dates are the range turned into calendar months.
      4. Year by year groups each pair under the age when its range starts, up to 21. Pairs whose range is open right now are listed under Happening now.
      5. Ranges are read in whole years, so "6–7 years" covers a child from the 6th birthday until the day before the 8th.
      6. Reminder dates are fixed points we chose for each milestone: age 6 and 12 for sealants, the 7th birthday for the orthodontic check, and 16 for wisdom teeth.

      Limits: every child is different. These are typical ranges from published charts, so a tooth arriving a few months early or late is common. The tool can't predict your own child's teeth; your dentist can, from an exam and X-rays.

      Frequently asked questions

      At what age do kids start losing teeth?
      Usually around 6 to 7 years, starting with the lower front teeth (ADA). The last baby teeth, the canines and back molars, usually come out by about 12.
      When do the 6-year molars come in?
      Usually between 6 and 7 years (ADA; the AAPD chart says 5½ to 7). They come in behind the last baby molars, so no baby tooth falls out to make room for them.
      When do the 12-year molars come in?
      Usually at 11–13 years for the lower ones and 12–13 years for the upper ones (ADA). The AAPD chart gives 12–14 years.
      Does my child really need to see an orthodontist at 7?
      The American Association of Orthodontists recommends a first orthodontic check by age 7, because the mix of baby and adult teeth at that age helps an orthodontist spot problems early. It doesn't always lead to braces; the orthodontist may suggest observation visits instead.
      When do wisdom teeth come in?
      Usually between 17 and 21 (ADA). Pediatric dentists (AAPD) advise checking their position, usually with an X-ray, during the late teens.

      Sources

      1. American Dental Association (MouthHealthy). Permanent Tooth Development (eruption chart). 2012. Accessed October 26, 2026.
      2. American Dental Association (MouthHealthy). Primary Tooth Development (eruption chart). 2012. Accessed October 26, 2026.
      3. American Dental Association (MouthHealthy). Eruption Charts. Accessed October 26, 2026.
      4. American Academy of Pediatric Dentistry. Dental Growth and Development (chronology of the human dentition). Accessed October 26, 2026.
      5. American Association of Orthodontists. Orthodontics for Children: Developing a Healthy Smile. Accessed October 26, 2026.
      6. American Association of Orthodontists. Regular Pre-Orthodontic Treatment Visits: The Importance of Orthodontic Observation Appointments. Accessed October 26, 2026.
      7. Centers for Disease Control and Prevention. Dental Sealant Facts. May 15, 2024. Accessed October 26, 2026.
      8. Centers for Disease Control and Prevention. About Dental Sealants. May 15, 2024. Accessed October 26, 2026.
      9. American Academy of Pediatric Dentistry. Periodicity of Examination, Preventive Dental Services, Anticipatory Guidance/Counseling, and Oral Treatment for Infants, Children, and Adolescents. latest revision 2022. Accessed October 26, 2026.
      10. American Dental Association (MouthHealthy). Wisdom Teeth. Accessed October 26, 2026.
      11. Cleveland Clinic. Teeth: Anatomy, Types, Function & Care. last updated January 26, 2023. Accessed October 26, 2026.

      Last reviewed by the Dental Health Time editorial team, against the sources above. How we review.

      Baby Teeth TrackerLog each tooth in and out, print a keepsake Tooth Fairy Calculator2026 rates by region, plus a printable certificate Teething CalculatorBaby's age → which teeth are in, which come next Tooth Eruption ChartAny age → which baby and adult teeth are in X-Ray Radiation ComparatorX-ray dose vs background, flights, chest X-ray