Free Health & Fitness Calculators
BMI, calorie counting, macro tracking and ideal weight calculators. Your data stays in your browser.
BMI Calculator
Free BMI calculator with metric and imperial units. Calculate your Body Mass Index instantly and understand your healthy weight range.
Calorie Calculator
Free daily calorie calculator. Calculate your Total Daily Energy Expenditure (TDEE) based on age, weight, height, gender, and activity level. Supports metric and imperial units.
Macro Calculator
Free macronutrient calculator. Calculate daily protein, carbohydrate, and fat intake based on your calories, goals, and activity level.
Ideal Weight Calculator
Free ideal body weight calculator. Find your healthy weight range using multiple formulas (Devine, Robinson, Miller, Hamwi). Supports metric and imperial units.
Alcohol Burning Time Calculator
Calculate how long alcohol stays in your system. Estimate blood alcohol concentration (BAC) and time until sober with US and EU standard drink sizes. Uses the Widmark formula.
Sleep Calculator
Find your optimal bedtime or wake time based on sleep cycles.
Body Fat Calculator
Calculate body fat percentage using the US Navy method.