Health & fitness

BMI, calories, running pace, sleep, heart rate, VO2max: track your fitness with simple calculations based on recognised formulas. These results don't replace medical advice.

16 calculators
BMI calculatorCalculate your body mass index and its category (adults).Open →
Daily calorie needsEstimate your basal metabolic rate and daily calories for your activity level.Open →
Running pace calculatorTurn a distance and time into pace (min/km) and speed (km/h).Open →
Sleep calculatorWhen to go to bed to wake up refreshed, based on 90-minute sleep cycles.Open →
Daily water intakeEstimate how much water to drink based on your weight, exercise and heat.Open →
Heart rate zonesYour maximum heart rate and training zones (endurance, cardio, threshold).Open →
Body fat calculatorEstimate your body fat percentage with a tape measure (US Navy method).Open →
Pregnancy due dateEstimate the due date and week of pregnancy from the last period.Open →
Ideal weight calculatorYour ideal weight according to classic medical formulas, compared with the BMI range.Open →
Blood alcohol estimateAn estimate of your blood alcohol level and how long until it's back to zero. Never a substitute for a breathalyser.Open →
Calories burned by activityHow many calories you burn walking, running, swimming, cycling or lifting weights.Open →
Cooper test and VO2maxYour VO2max and fitness level from the distance you run in 12 minutes.Open →
Race time predictorFrom a recent race time, estimate your 5K, 10K, half marathon and marathon times.Open →
Waist-to-height and waist-to-hip ratioTwo simple measures of belly fat, often more telling than BMI.Open →
Steps to km and caloriesConvert your steps into distance and calories, and see what 10,000 steps represents.Open →
Ovulation calculatorEstimate your ovulation date, fertile window and next period.Open →