Free tools

Supplement & Nutrition Tools

Professional-grade calculators built for health-conscious individuals. Get personalized recommendations for vitamins, protein, and caffeine — backed by science, free to use.

Daily Vitamin & Mineral Intake

RDA calculator for adults

Personalized daily recommended intake for 15 essential vitamins and minerals based on age, sex, and pregnancy status.

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Protein Intake Calculator

Daily protein needs

Calculate your optimal daily protein intake based on body weight, activity level, and fitness goals.

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Caffeine Safety Checker

Stay within safe limits

Track caffeine from coffee, tea, energy drinks, and supplements. Get instant safety analysis based on guidelines.

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Why use our tools?

Each calculator is built on peer-reviewed dietary guidelines from authoritative sources like the NIH, EFSA, and WHO. No accounts, no ads, no tracking beyond basic analytics.

Science-backed

Values from NIH, EFSA, and WHO dietary reference intakes.

Free forever

No paywalls, no signup, no limits. Use as often as you need.

Privacy first

All calculations run in your browser. We never store your data.

These tools are for educational purposes only and do not constitute medical advice. Always consult a qualified healthcare professional before changing your supplement or nutrition routine.