Health
BMI, calories, heart rate, body fat and more
BMI Calculator
Calculate your Body Mass Index (BMI) and find out which weight category you fall into.
Calorie Calculator
Find your daily calorie needs based on age, weight, height and activity level.
Running Pace Calculator
Find your running pace per kilometre and your average speed.
Body Fat Calculator
Estimate your body fat percentage with the U.S. Navy method.
Water Intake Calculator
Estimate how much water you should drink per day based on your weight and activity.
Macro Calculator
Split a daily calorie target into protein, carbs and fat for your goal.
Pregnancy Due Date Calculator
Estimate your due date and how far along you are, from your last period.
Ovulation Calculator
Find your most fertile days and ovulation date from your last period and cycle length.
Sleep Calculator
Find the best times to go to bed or wake up, based on 90-minute sleep cycles.
Ideal Weight Calculator
Estimate your ideal body weight from your height and sex, plus your healthy weight range.
Waist-to-Hip Ratio Calculator
Calculate your waist-to-hip ratio (WHR) and see your health-risk level.
Calories Burned Calculator
Estimate calories burned by activity, from your weight and the duration.
Smoking Cost Calculator
How much a smoking habit costs per year and over ten years.
Blood Pressure Category Calculator
Classify a blood-pressure reading (ACC/AHA) and show the pulse pressure. Informational only.
Steps to Distance & Calories
Convert a step count into distance walked and calories burned.
Calorie Deficit Calculator
The daily calorie deficit to reach a target weight within a set number of weeks.
Protein Intake Calculator
Recommended daily protein based on body weight and activity level.
Blood Alcohol Calculator (BAC estimate)
Estimate your blood alcohol level (g/L) using the Widmark formula.
Max Heart Rate & Training Zones
Estimate your maximum heart rate and training zones from your age.
Waist-to-Height Ratio Calculator
Your waist-to-height ratio and health-risk level (keep waist under half your height).
Lean Body Mass Calculator
Estimate your lean body mass and fat mass (Boer formula).
Body Surface Area Calculator (BSA)
Estimate your body surface area (m²) with the Mosteller formula.
One Rep Max Calculator (1RM)
Estimate your one-rep max and training loads from a set you've lifted.
Running Calories Calculator
Estimate the calories you burn running a given distance.