Health

Health and wellbeing tools: body mass index, daily calories, basal metabolic rate and recommended daily water.

Calculate your Body Mass Index (BMI) instantly and check WHO categories.

Work out your basal metabolic rate (BMR) with the Mifflin-St Jeor formula: the calories you burn at rest.

Work out the calories you need per day from your metabolism and activity, with goals to maintain, lose or gain weight.

Work out how much water to drink per day from your weight (litres and glasses). A quick, simple guide.

Work out your estimated due date from your last period (Naegele’s rule), with gestational age and trimester.

Estimate body fat percentage with the US Navy method from height, neck and waist. Free, instant, private.

Calculate your running pace per km and per mile, plus speed, from distance and time. Free and instant.

Estimate your one-rep max (1RM) from weight and reps, with a percentage training table. Free and instant.

Estimate your ideal weight (Devine formula) and the healthy weight range for your height. Free and instant.

Calculate your max heart rate and the 5 training zones from your age. Free, instant, in your browser.

Find the best bedtimes to wake up refreshed, based on 90-minute sleep cycles. Free, instant, in your browser.

Estimate your daily protein needs from your weight and activity level. Free, instant, in your browser.

Calculate body surface area (BSA) with the Mosteller formula from height and weight. Free and instant.

Calculate daily calories and a protein/carbs/fat macro split from your body and goal. Free and instant.

Work out your daily creatine dose from your weight in kg or lb, with loading and maintenance. Free, instant, in your browser.

Tools — Health