Calculators

The same calculators that are in the app — same formulas, same answers. No sign-up, and what you type never leaves your browser.

• Daily Calorie Needs

  Combines your basal rate with your activity level and goal to give a daily calorie target.

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• Basal Metabolic Rate (BMR)

  The energy you burn doing nothing at all — just staying alive.

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• Ideal Weight

  A reference range for your height — a starting point, not a target.

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• Body Fat Percentage

  Estimates body fat from tape-measure circumferences.

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• Food Calorie Calculator

  Calories and split from protein, carbohydrate and fat in grams.

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• Daily Water Intake

  A daily water target from your weight and how much you move.

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• Body Mass Index (BMI)

  One number from height and weight — and what it does and does not tell you.

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• Body Type / Frame Size

  Estimates skeletal frame from wrist circumference relative to height.

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• Fat-Free Mass Index (FFMI)

  Normalises your lean mass for height — BMI’s counterpart for muscle.

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• One-Rep Max (1RM)

  Estimates your one-rep max — and your working weights — from a set you actually did.

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• Maximum Heart Rate

  Your estimated maximum heart rate, and the training zones under it.

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• Beep Test → VO2max

  Estimated VO2max from the level you reached on the 20 m shuttle run.

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