Free online health and lifestyle tools

Computes body mass index and category from height and weight in metric or imperial units.

Computes BMR, TDEE, calorie deficits of 10 to 40 percent and daily protein targets.

Takes your TDEE and target intake and estimates the daily deficit and weekly weight loss.

Finds maintenance calories using Mifflin-St Jeor, Harris-Benedict or Katch-McArdle formulas.

Estimates daily energy expenditure and suggests calorie and macro targets for a goal.

Forecasts future body weight from daily calorie intake, with BMI, BMR and TDEE.

Converts outdoor bike measurements or bike-fit data into settings for the Zwift Ride indoor frame.

Fitness site with 16+ free calculators such as BMI, TDEE and macros alongside shoe and watch guides.

Counts down the time left based on your age and an assumed life expectancy.

Estimates your one-rep max for bench, squat and deadlift from weight and reps, with RPE options.

BMI calculator page within a student learning companion app.

Estimates BMR, BMI and daily calorie needs for weight loss or gain.