Free Health Calculators – BMI, Body Fat, Protein & More

Free Health Calculators

Simple, free and private tools to check your weight status, body composition and daily nutrition needs. Every calculator works on your phone, needs no sign-up, and explains what your result means.

Body Measurements

BMI Calculator Find your Body Mass Index and weight category, with a healthy weight chart by height and notes for South Asian adults. Body Fat Percentage Calculator Estimate your body fat with the U.S. Navy tape-measure method for men and women. No special equipment needed. Waist-to-Height Ratio Calculator Check your belly-fat health risk in cm or inches. Keep your waist under half your height and see your target size.

Nutrition

Protein Intake Calculator Get a daily protein target based on your weight, goal and activity level, with a per-meal split and food examples. Calorie and TDEE Calculator Work out how many calories you burn each day and how big a calorie deficit you need for steady fat loss.

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Please note: These calculators give general estimates for healthy adults aged 18 and over. They are not medical advice. Speak with a doctor or qualified dietitian before making major changes to your diet or exercise routine.