Health tools

Free health and fitness calculators: TDEE, BMR, macros, calorie deficit, protein and one rep max. Educational estimates from published formulas, never a diagnosis or medical advice. No sign-up.

• BMI CalculatorFind your Body Mass Index in metric or imperial — and what the number actually means.
• BMR CalculatorThe calories your body burns doing nothing at all, from three published equations.
• Calorie Deficit CalculatorWork out the daily deficit a goal weight actually needs, and whether that goal is a sensible one.
• Macro CalculatorTurn a calorie target into grams of protein, carbs and fat.
• One Rep Max CalculatorEstimate your 1RM from a set you already did, with six formulas and how much they disagree.
• Protein CalculatorHow much protein a day, as a range, with the reasoning shown.
• TDEE CalculatorEstimate the calories you burn in a day, and see the working.