Health Calculators
14 free calculators in this category. Every result is worked out in your browser — nothing you type is sent anywhere.
Blood Alcohol Concentration Calculator
Estimate blood alcohol concentration using the Widmark formula from standard drinks (10g alcohol), body weight, sex and time elapsed.
Open calculatorBMR Calculator
Estimate your Basal Metabolic Rate using the Mifflin-St Jeor equation to see how many calories your body burns at rest each day.
Open calculatorBody Fat Percentage Calculator (US Navy Method)
Estimate your body fat percentage using the US Navy tape-measure method based on waist, neck and height measurements.
Open calculatorCalories Burned Calculator
Estimate calories burned during exercise based on activity type, your body weight and the duration of the session in minutes.
Open calculatorDaily Water Intake Calculator
Estimate your recommended daily water intake in litres based on body weight and activity level, using a standard hydration guideline.
Open calculatorHeart Rate Zones Calculator
Calculate your estimated maximum heart rate and training heart rate zones for fat burning, cardio and peak effort exercise.
Open calculatorIdeal Weight Calculator
Estimate a healthy ideal body weight range in kilograms using the Hamwi and Devine formulas based on your height and sex.
Open calculatorMacro Split Calculator
Split your daily calorie target into grams of protein, carbohydrates and fat based on a chosen macronutrient percentage split.
Open calculatorPregnancy Due Date Calculator
Estimate an approximate pregnancy due date and current gestational week from the first day of your last menstrual period.
Open calculatorRunning Pace Calculator
Calculate your running pace per kilometre, total time or distance for a run, and see an equivalent speed in kilometres per hour.
Open calculatorTDEE / Daily Calorie Needs Calculator
Calculate your Total Daily Energy Expenditure to estimate daily calorie needs for maintaining, losing or gaining weight.
Open calculatorVO2 Max Estimate Calculator
Estimate your VO2 max, a key measure of aerobic fitness, from a recent race time and distance using the Jack Daniels formula.
Open calculatorWaist-to-Height Ratio Calculator
Work out your waist-to-height ratio, a simple screening measure that flags increased health risk when waist exceeds half your height.
Open calculatorWaist-to-Hip Ratio Calculator
Calculate your waist-to-hip ratio from centimetre measurements to assess body fat distribution and related health risk category.
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