Health & Fitness Calculators

BMI, BMR, TDEE, macros, body fat, pace and training zones.

21 calculators in this category.

• BMI Calculator — Calculate body mass index and see where it falls on the WHO classification.
• BMR Calculator — Calculate basal metabolic rate — the calories you burn at complete rest.
• Body Fat Calculator — Estimate body fat percentage using the US Navy tape measurement method.
• Body Surface Area Calculator — Calculate body surface area using the Du Bois, Mosteller and Haycock formulas.
• Calorie Calculator — Find your daily calorie target for losing, maintaining or gaining weight.
• Calorie Deficit Calculator — Work out the deficit you need to hit a weight loss goal by a target date.
• Carbohydrate Intake Calculator — Work out daily carbohydrate needs from body weight and training load.
• Heart Rate Zone Calculator — Calculate your maximum heart rate and the five training zones.
• Ideal Weight Calculator — Estimate a healthy weight range using four established clinical formulas.
• Lean Body Mass Calculator — Calculate lean body mass and fat mass from weight and body fat percentage.
• Macro Calculator — Split your daily calories into protein, carbohydrate and fat targets.
• One Rep Max Calculator — Estimate your 1RM from a submaximal set and get a full percentage training table.
• Protein Calculator — Find your daily protein target based on body weight and training goals.
• Running Calories Calculator — Estimate calories burned running, adjusted for pace, weight and incline.
• Running Pace Calculator — Calculate pace, time or distance, with split times for common race distances.
• TDEE Calculator — Calculate total daily energy expenditure — the calories you burn in a full day.
• VO₂ Max Calculator — Estimate aerobic fitness from a resting heart rate, a 1.5-mile run or the Cooper test.
• Waist-to-Height Ratio Calculator — Assess health risk from central body fat using waist circumference and height.
• Waist-to-Hip Ratio Calculator — Calculate WHR and assess body fat distribution and associated health risk.
• Water Intake Calculator — Estimate how much water to drink daily based on weight, activity and climate.
• Weight Loss Calculator — Project how long a goal will take at your current calorie intake.