Compliance & FDAUpdated August 2026ReguSift Editorial Team · Editorial content; no professional regulatory review claimed
How to calculate Daily Value percentages for supplements and foods?
ReguSift uses AI to extract product data and prepare Nutrition Facts and Supplement Facts drafts for review against the source specification.
Daily Value (DV) percentages show how much a nutrient contributes to the recommended daily intake. The formula is:
DV% = (Amount per serving ÷ FDA Daily Value) × 100
For example:
- Vitamin C: 60 mg per serving, FDA DV = 90 mg → (60 ÷ 90) × 100 = 67%
- Calcium: 200 mg per serving, FDA DV = 1,300 mg → (200 ÷ 1,300) × 100 = 15%
ReguSift auto-calculates DV percentages using the latest FDA reference values (21 CFR 101.9 for foods, 21 CFR 101.36 for supplements). Learn more about DV calculations.