Free tools
Fitness calculators
No account needed. Use metric, imperial or stone measurements.
Free tools
Calorie Calculator: Daily Maintenance & TDEE
Estimate daily maintenance calories from age, height, weight and activity. Free TDEE calculator with metric or imperial units and a worked example.
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Protein Calculator: Grams per Day
Calculate a daily protein reference range in grams from your body weight. Use kg, pounds or stone. Free calculator, examples and formula; no sign-up.
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Kg to Lbs Converter: Pounds & Stone
Convert kg to lbs, pounds to kg and stone. Free converter plus a chart for 60, 70, 75, 80, 90 and 100 kg. No sign-up needed.
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Adult BMI Calculator: Metric & Imperial
Calculate adult BMI from height and weight in cm/kg or inches/lb. See the formula, a worked example and what BMI can and cannot tell you.
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Macro Calculator: Calories to Grams & Back
Convert calories and chosen macro percentages to grams, or protein, carbs and fat back to calories. Free calculator with worked examples; no sign-up.
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These tools provide general information, not medical advice. Nutrition estimates are not intended for children, pregnancy, breastfeeding or managing a medical condition.