Free health tools

Useful numbers.Clearer next steps.

Simple, science-based calculators for nutrition, weight management, and strength—without sign-ups or guesswork.

Instant resultsNo account neededMobile friendly

Body & energy

Understand your body and daily calorie needs.

4 tools

Estimate the calories your body needs at complete rest.

Find your total daily energy needs based on activity.

Estimate body fat percentage using the U.S. Navy method.

Explore a healthy weight range based on your height.

Turn your goal into practical daily targets.

3 tools

Build a daily protein, carb, and fat target.

Plan a realistic calorie target for sustainable fat loss.

Calculate protein needs for your weight and training goal.

Plan training loads and measure strength progress.

1 tool

Estimate your 1RM and useful training percentages.

Built for real life

Science-based

Built on established health and fitness formulas.

Completely free

No fees, subscriptions, or email sign-ups.

Easy to understand

Results include context and practical next steps.

Works with Lilbite

Take your targets into daily food tracking.