№ 01 Calculators

The numbers, calculated honestly

Straightforward tools that run on your device, using the same formulas trainers and dietitians use — no sign-up, no data leaving your browser.

How many calories you actually burn per day — the honest number.

5 inputs1 minMifflin–St Jeor

Turn a calorie target into protein, carb, and fat grams.

2 inputs1 minFrom your calories

Estimate body fat percentage from a tape measure — no calipers.

4 inputs2 minU.S. Navy method

Estimate your max lift from any set, with training percentages.

2 inputs1 minEpley

Your five training zones, tuned to your resting heart rate.

2 inputs1 minKarvonen

Your Body Mass Index — with the context it usually leaves out.

2 inputs1 minWith context

Your daily protein target in grams, by body weight and goal.

2 inputs1 minBy goal

CalculatorComing soon

Daily target

CalculatorComing soon

From a field test

CalculatorComing soon

Multiple formulas