Health & Fitness Calculators

Calculate your Body Mass Index (BMI) and find out if you are a healthy weight for your height.

Estimate your body fat percentage using the US Navy method based on your measurements.

Estimate how many calories you burn during different activities and exercises.

Look up calorie content of common UK foods and build a daily food diary.

Calculate your estimated due date and key pregnancy milestones based on your last period.

Calculate your Basal Metabolic Rate to understand how many calories your body burns at rest.

Calculate your Total Daily Energy Expenditure based on your activity level and body metrics.

Find your ideal weight range based on your height, gender, and frame size using multiple formulas.

Calculate your daily macronutrient targets for protein, carbohydrates, and fat based on your goals.

Calculate your estimated due date based on your last period, conception date, or IVF transfer date.

Calculate your running pace, finish time, or distance. Includes splits for 5K, 10K, half marathon, and marathon distances.

Predict your parkrun finish time, see your age grade percentage, get equivalent race predictions for 10K to marathon, and build a personalised training plan.

Calculate your recommended daily water intake based on weight, activity level, and climate.

Calculate your heart rate training zones for fat burning, cardio, and peak performance.

Convert running pace between min/km, min/mile, km/h, and mph.

Convert steps to miles or kilometres based on your stride length and height.

Calculate the best time to sleep or wake up based on 90-minute sleep cycles.

Calculate alcohol units in your drinks and track weekly consumption against UK guidelines.