Free nutrition tools & calculators
Evidence-friendly calculators to support your food decisions—macros, protein, hydration, and more.
Popular tools
Open any tool to work through numbers step by step—clear labels, no hype.
Protein Calculator
Calculate your daily protein needs based on weight, activity level, and goals.
Use toolMacro Calculator
Get your personalized macronutrient breakdown for your fitness goals.
Use toolCalorie Calculator
Find your Total Daily Energy Expenditure (TDEE) and daily calorie needs for your goals.
Use toolHydration Calculator
Calculate your daily water intake needs based on activity and climate.
Use toolBMI Calculator
Calculate your Body Mass Index with health context and limitations.
Use toolFiber Calculator
Calculate your daily fiber needs and track intake.
Use toolGrocery Budget Planner
Plan weekly grocery spending and save money on healthy foods.
Use toolCaffeine Calculator
Track your daily caffeine intake and stay within safe limits.
Use toolWhat Diet Quiz
Discover your ideal dietary approach based on your unique lifestyle, values, and health needs.
Use toolComing soon
We're building more diet-aware planners and label helpers—check back or subscribe for updates.
Recipe Scaler
Scale recipe ingredients up or down for any serving size.
Unit Converter
Convert between cooking measurements (cups, ml, oz, grams).
Meal Cost Calculator
Calculate the cost per serving of your recipes.
Sodium Calculator
Monitor your sodium intake for better heart health.
Nutrition Label Reader
Upload or input nutrition labels for instant analysis.