Activity Calories Calculator

Calculate energy burned during exercise or daily steps using standard MET values, your weight, and duration — or convert…

BMI Calculator

Calculate your Body Mass Index (BMI) from height and weight, then see the matching WHO adult category. Use it as a quick…

Body Fat Calculator

Estimate body fat percentage from neck, waist, height, and (for women) hip circumferences using the US Navy formula — a …

Calorie Calculator

Estimate how many calories you need per day from age, sex, weight, height, and activity — starting with Mifflin–St Jeor …

Calorie Deficit Calculator

Estimate how long weight loss takes at a given daily calorie deficit — or how large a deficit you need to reach a goal b…

Heart Rate Zones Calculator

Enter your age (and optional resting heart rate) to see max HR and five standard training zones — from recovery to VO₂ m…

Ideal Weight Calculator

Enter your height to see the weight range that corresponds to a healthy adult BMI (18.5–24.9). This is a screening guide…

Macro Calculator

Estimate your daily macronutrient targets in grams from age, sex, weight, height, activity, and a macro preset (or custo…

Running Pace Calculator

Enter race or training distance and total time. Get pace per kilometre and average speed — useful for goal setting and s…

Pregnancy Due Date Calculator

Estimate a due date by adding 280 days (40 weeks) to the first day of your last menstrual period (LMP). Ultrasound and c…

Protein Intake Calculator

Get a daily protein target range in grams based on your weight and goal — maintain, fat loss (cut), or muscle gain (bulk…

Sleep Calculator

Plan bedtime or wake time around roughly 90-minute sleep cycles so you are less likely to wake from deep sleep mid-cycle…

Waist Ratio Calculator

Measure waist (and hip for WHR) to screen central adiposity — waist-to-height ratio or waist-to-hip ratio with establish…

Water Intake Calculator

Estimate a daily fluid target from body weight using a common ~33 ml per kilogram guideline, then add a little for extra…