Our mission
BMI 247 exists for one reason: to make accurate health calculators available to everyone, free, 24 hours a day, without asking for your email, your money, or anything else.
Health information shouldn't be locked behind paywalls or buried in cluttered websites covered in pop-ups. We believe in clean tools that give you the answer you came for, fast.
What we offer
Today we offer four calculators:
- BMI Calculator — your body mass index based on WHO categories
- Calorie Calculator — daily calorie needs using the Mifflin-St Jeor formula
- BMR Calculator — calories burned at rest
- Ideal Weight Calculator — your healthy weight range using four trusted formulas
More calculators are on the way. We're constantly adding new tools based on what our users need most.
Our approach
Every calculator on this site uses formulas that are accepted by health professionals worldwide. We don't invent our own equations — we use the same ones doctors, dietitians, and researchers use.
That said, calculators are just tools. They give you a starting point, not a complete picture of your health. For anything involving medical decisions, please consult a healthcare professional.
Privacy first
Your data stays in your browser. We don't ask for your name, email, or any personal information. We don't store your inputs or results anywhere. Read our full privacy policy for details.