Free Health & Nutrition Calculators

All the tools you need to plan your diet and training.

BMI Calculator (Body Mass Index)

Calculate your body mass index (BMI) in seconds and see whether your weight is in the healthy range.

BMR Calculator (Basal Metabolic Rate)

Find out how many calories your body burns every day just to keep running, with no activity at all.

TDEE Calculator (Total Daily Energy Expenditure)

Find out how many calories you burn in a whole day, including exercise and daily activity.

Water Intake Calculator

Find out how many liters of water you should drink every day based on your body weight.

Ideal Weight Calculator

Find your ideal weight based on your height, using the Devine formula.

Macro Calculator (Macronutrients)

Work out exactly how much protein, carbs and fat you should eat every day.

Body Fat Calculator (Navy Method)

Estimate your body fat percentage with just a tape measure, using the U.S. Navy method.

Protein Calculator (Daily Protein Needs)

See how many grams of protein your body needs every day to build or maintain muscle.

Calorie Deficit Calculator

Plan your weight loss: see how many calories you need to cut to lose 1 kg a week.

One Rep Max Calculator (1RM)

Estimate the maximum weight you can lift for a single rep (1RM) on lifts like the squat or bench press.

Waist-to-Hip Ratio Calculator (WHR)

Find out whether the way fat is distributed on your body raises your risk of heart disease.

Lean Body Mass Calculator (LBM)

Find out how much of your total weight is muscle, bone and organs (everything except fat).

Pregnancy Weight Gain Calculator

See how much weight is healthy to gain during pregnancy, based on your BMI before pregnancy.

Target Heart Rate Calculator

Find your heart rate zones for fat burning and aerobic endurance.

Calories Burned Calculator

Estimate how many calories you burn walking, running or lifting weights.

Track your calories with Calix

Log meals with a photo, a barcode scan or a quick search, keep an eye on your macros and reach your goal with an AI nutrition coach. Free on iPhone and Android.