15 free tools

Calculate less. Understand more.

Every result includes context, limitations, and a useful next step. Calculator inputs stay in your browser.

Calorie & TDEE Calculator

Estimate the energy your body uses in a typical day.

Turn a calorie target into practical protein, fat, and carbohydrate ranges.

Estimate a useful daily protein range for your goal.

Explore a deliberately conservative weight-loss timeline.

Set a restrained rate of gain that supports training.

Calculate BMI and understand what it can—and cannot—tell you.

Estimate lean mass from body weight and a body-fat estimate.

Estimate 1RM from a submaximal set without testing a maximum.

Create a conservative working maximum from an estimated 1RM.

Find the plates needed on each side of a standard bar.

Calculate simple set volume and interpret it carefully.

Convert distance and finish time into pace and speed.

Project finish time at a chosen pace.

Estimate broad training zones from age and resting heart rate.

Choose a weekly structure you can realistically repeat.