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Health Calculators
Simple health and fitness calculations with clear results.
Exercise Calories Calculator
Estimate workout calories from body weight, duration and activity intensity.
Open tool →BMI Calculator
Calculate BMI using metric or imperial units.
Open tool →Calorie Calculator
Estimate BMR, maintenance calories and daily calorie targets.
Open tool →Macro Calculator
Split calories into protein, carbs and fat with adjustable assumptions.
Open tool →Protein Intake Calculator
Estimate daily protein grams from body weight and a selected planning factor.
Open tool →Water Intake Calculator
Convert the 6–8 glass hydration guide into litres.
Open tool →Walking Calories Calculator
Estimate calories burned from weight, time and walking pace.
Open tool →Running Pace
Calculate average running pace and speed.
Open tool →Age Calculator
Calculate exact age in years, months and days.
Open tool →BMR Calculator
Estimate resting energy expenditure.
Open tool →Waist-to-Height Ratio
Calculate waist circumference as a ratio of height.
Open tool →Not sure which tool you need? Use the search on the homepage, or browse another category below.