Calculators to start on the right foot.

The same sums the app does, open to everyone. No sign-up.

Calorie and macro calculator
Work out how many calories and how much protein, carbs and fat you need a day to lose fat, build muscle or maintain. With portions measured by hand.
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Daily steps calculator
Work out your daily step goal from your age, how much you move now and your goal. Based on the evidence on steps and health.
Open the calculator

Your first challenge lasts 21 days. Start today.

Two minutes to tell us where you are starting from, and the method adapts to you.

Start my first challenge