Accurate, fast health calculators built on WHO and NIH-referenced formulas. No clutter, no signup — just the number you need.
Two powerful health tools, built with precision
Find your Body Mass Index instantly. Know whether your current weight is healthy for your height — based on WHO classification standards.
Calculate your Total Daily Energy Expenditure. Know exactly how many calories you burn daily — and what to eat to reach your weight goals.
Science-based health guides to go with your results
Stop guessing. Use your TDEE to find the exact calorie target for your goal — weight loss, maintenance, or gain.
Read More →The standard range is the same for all — but for women, age and hormones change what your number really means.
Read More →Crash diets are biologically designed to fail. The TDEE method gives you a sustainable deficit without hunger.
Read More →Don’t see the health tool you need? Tell us what you’re looking for — we build the most requested calculators first.
Everything you need to know about CalcBrew and our health calculators.