About CalcMango
CalcMango is a free calculator website. We build simple, honest tools that answer everyday questions with numbers — how many calories you burn, what your body mass index means, what your body fat percentage is, and soon, how your money adds up.
Everything on CalcMango is free. There is no sign-up, no account, and no paywall. Open a calculator, enter your numbers, and get your result right away.
What We Offer
Our tools fall into two groups:
Health and fitness calculators — including TDEE, BMI, maintenance calories, walking calories, and body fat percentage. These help you understand your body and plan your food and activity with realistic numbers.
Money calculators — coming soon. These will cover everyday money questions such as loans, interest, and paychecks, in the same plain and simple style.
How Our Calculators Work
Every calculator shows its method. For example, our calorie tools use the widely known Mifflin-St Jeor equation, and our body fat tool uses the U.S. Navy method. Where a result is an estimate, we say so — because honest estimates are more useful than false precision.
All calculations happen right in your browser. You do not need to create an account, and your inputs are not sent to us or stored on our servers.
A Note on Advice
Our calculators give information, not professional advice. Health results are educational estimates, not medical guidance, and money results are estimates, not financial advice. For decisions about your health or money, talk to a qualified professional.
Our Promise
Free tools. Clear methods. No sign-up. No exaggerated claims. If a number is an estimate, we label it as one — and we keep improving our tools so they stay simple, accurate, and genuinely useful.