Fluoride Dose Calculator

Enter a child's age and local water fluoride level to get the recommended daily fluoride supplement dose per ADA/AAP guidelines.

Child Information

Enter the child's age and the fluoride level in their primary drinking water.

Child's Age
mg/L (ppm)

Check with your water utility or test well water. Enter 0 if unknown or using unfluoridated bottled water.

Fill in the fields and click
Calculate Dose to see the recommendation.

ADA/AAP Supplementation Schedule Reference

Age Water < 0.3 ppm Water 0.3–0.6 ppm Water > 0.6 ppm
6 months – 3 years 0.25 mg/day None None
3–6 years 0.50 mg/day 0.25 mg/day None
6–16 years 1.0 mg/day 0.50 mg/day None
Under 6 months No supplement recommended

Source: American Dental Association / American Academy of Pediatrics fluoride supplementation guidelines (2010).

Summary

Enter a child's age and local water fluoride level to get the recommended daily fluoride supplement dose per ADA/AAP guidelines.

How it works

  1. Enter the child's age in years and months.
  2. Enter the fluoride concentration of your local water supply (mg/L or ppm). This is available from your water utility.
  3. Click "Calculate Dose" to see the recommended daily supplement amount.
  4. The calculator applies the ADA/AAP supplementation schedule based on age brackets and water fluoride thresholds.
  5. Review the result and consult your dentist or pediatrician before starting supplementation.

Use cases

  • Parents determining whether their child needs a fluoride supplement.
  • Dentists and pediatricians providing quick dosage guidance.
  • Families using well water with unknown or low fluoride content.
  • Caregivers in areas where community water is not fluoridated.
  • Households using filtered or bottled water that removes fluoride.
  • Dental hygienists educating families on fluoride supplementation.

Frequently Asked Questions

Last updated: 2026-07-01 · Reviewed by Nham Vu