Daily Value (%DV) Calculator

Instantly calculate the percent Daily Value for any nutrient on your FDA Nutrition Facts label. Based on official FDA 21 CFR 101.9 Reference Daily Intake (RDI) values for adults and children 4+ years.

Nutrition Facts mode·21 CFR 101.9·Switch to Supplement Facts →

Input Parameters

Select Nutrient

FDA Reference Daily Intake (Adults 4+)

90 mg

Amount Per Serving

Calculation Result

%DV (DAILY VALUE)

67%

Math Breakdown

Formula: %DV = (Amount ÷ RDI) × 100

= (60 ÷ 90) × 100

= 66.67% → 67%

Source: 21 CFR 101.9(c)(9) — Percentages for vitamins/minerals are rounded to the nearest 1%. Amounts < 1% can be declared as "< 1%".

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How is Daily Value (%DV) calculated?

On an FDA Nutrition Facts panel, the percent Daily Value (%DV) tells consumers how much a nutrient in one serving contributes to a daily diet. It is computed as: (amount per serving ÷ Reference Daily Intake) × 100. The result is rounded to the nearest 1%.

What are RDI / Daily Values?

Reference Daily Intake (RDI) values are the FDA-established daily reference amounts for essential nutrients (e.g. Vitamin C 90 mg, Calcium 1,300 mg). Under 21 CFR 101.9, these are the denominators used to derive %DV on both Nutrition Facts and Supplement Facts panels. The calculator above uses the same official RDI figures as the FDA regulations, so you can trust the result matches what your printed label should show.

Source: FDA 21 CFR 101.9(c)(8)(iv) — Daily Reference Values and Reference Daily Intakes. See the official text at ecfr.gov — 21 CFR 101.9.

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