Health & Fitness Calculators

15 free, accurate calculators for health & fitness

All Health & Fitness Calculators

Calculate Body Mass Index and healthy weight range

Calculate your daily calorie needs based on age, weight, height, and activity

Estimate body fat percentage using Navy method or BMI method

Calculate Basal Metabolic Rate — calories burned at complete rest

Calculate your ideal body weight based on height and gender

Calculate Total Daily Energy Expenditure including activity level

Calculate due date, pregnancy week, and key milestones

Calculate fertile window and ovulation date from your cycle

Calculate running pace, finish time, and distance for races

Calculate your ideal daily macronutrient split (proteins, carbs, and fats) based on your fitness goals.

Calculate your ideal daily carbohydrate intake based on your activity level and fitness goals.

Calculate your daily protein requirements based on your body weight, activity level, and fitness goals.

Estimate your 1-rep maximum for any lift based on the weight and reps you can currently perform.

Calculate your estimated Glomerular Filtration Rate (eGFR) to assess kidney function.

Calculate your Body Surface Area (BSA) which is often used in medical and clinical settings.