What is the standard fluoride supplementation schedule?

The ADA/AAP schedule: ages 6 months–3 years get 0.25 mg/day if water fluoride < 0.3 ppm; ages 3–6 years get 0.50 mg/day if < 0.3 ppm or 0.25 mg/day if 0.3–0.6 ppm; ages 6–16 years get 1.0 mg/day if < 0.3 ppm or 0.50 mg/day if 0.3–0.6 ppm. No supplement is needed when water fluoride is ≥ 0.6 ppm.

Where can I find my water fluoride level?

Contact your local water utility or check the CDC's My Water's Fluoride portal. Well water users should have their water tested by a certified laboratory.

What if my child is under 6 months old?

Fluoride supplements are not recommended for infants under 6 months of age. Breast milk and infant formula contain sufficient fluoride for this age group.

Is this tool a replacement for professional advice?

No. Always consult a licensed dentist or pediatrician before starting any supplement. This tool provides educational reference values based on published guidelines.

What units does this tool use?

Water fluoride concentration is entered in mg/L (milligrams per liter), which is equivalent to ppm (parts per million). Supplement doses are given in mg (milligrams) per day.

Why is there no supplement recommendation above 0.6 ppm?

At concentrations of 0.6 ppm or above, children receive adequate fluoride through drinking water alone. Additional supplementation could risk dental fluorosis (white spots on teeth).

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

Years

Months (0–11)

Water Fluoride Concentration

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

This tool calculates the recommended daily fluoride supplement dose for children from 6 months to 16 years based on the American Dental Association (ADA) and American Academy of Pediatrics (AAP) guidelines. The appropriate dose depends on the child's age and the fluoride concentration in their primary drinking water source. Supplementation is only indicated when the water fluoride level is below 0.6 ppm.

How it works

Enter the child's age in years and months.
Enter the fluoride concentration of your local water supply (mg/L or ppm). This is available from your water utility.
Click "Calculate Dose" to see the recommended daily supplement amount.
The calculator applies the ADA/AAP supplementation schedule based on age brackets and water fluoride thresholds.
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: 2026-09-30 · Reviewed by Nham Vu