BMR Calculator
Find out how many calories your body burns at complete rest, based on your age, height, weight and sex — the foundation for any diet or fitness plan.
Basal Metabolic Rate
1,674 kcal/day
Calories your body burns at complete rest.
About BMR Calculator
Find out how many calories your body burns at complete rest, based on your age, height, weight and sex — the foundation for any diet or fitness plan. Whether you want to build better routines or just save time, BMR Calculator has you covered — free and online. Most people use it for tracking a fitness goal and organising a busy week, but it fits plenty of other jobs too. It's part of ChatGBT's free toolkit, with no account required.
Why use BMR Calculator?
- Fewer mistakes: let BMR Calculator handle the fiddly parts so you don't have to.
- Skip the expensive software — BMR Calculator does the job for free.
- Simple enough for beginners, dependable enough to use every day.
- Designed to help you make everyday decisions easier with less effort.
- Get clean, ready-to-use results you can copy and run with.
Whether you do this daily or just once in a while, BMR Calculator is built for anyone planning their day-to-day.
Key features
- Copy your output in one tap and take it anywhere.
- Built to handle real, everyday lifestyle tasks reliably.
- No watermarks, paywalls or usage caps.
- Works on every modern browser, mobile and desktop.
What you can use BMR Calculator for
- Tracking a fitness goal
- Planning a balanced meal
- Organising a busy week
How to use BMR Calculator
- Head to the tool above and fill in what it asks for.
- Double-check your input so the result comes out just right.
- Press “Generate” to get your result instantly.
- Refine your input and re-run until you're happy with it.
Tips for getting the best results
- Great for tracking a fitness goal — one of the most common reasons people open BMR Calculator.
- Be specific with your input — the more detail you give, the better BMR Calculator performs.
- Try it more than once; small tweaks can noticeably improve the result.
Frequently asked questions
What is BMR Calculator?
Find out how many calories your body burns at complete rest, based on your age, height, weight and sex — the foundation for any diet or fitness plan. It's a free online lifestyle tool you can use right from your browser — handy for tracking a fitness goal and planning a balanced meal.
Can I use BMR Calculator for commercial work?
Yes. You're free to use BMR Calculator and its results for personal, educational and commercial projects at no cost.
Can I use BMR Calculator on my phone?
Absolutely. BMR Calculator runs in any modern browser, so it works on phones, tablets and computers alike.
Is BMR Calculator free?
Yes — BMR Calculator is 100% free with no account, subscription or hidden charges. Use it as much as you like.
What makes BMR Calculator different?
BMR Calculator focuses on doing one job really well, fast and for free, with no setup — so you can build better routines and get on with your day.
Is my data safe with BMR Calculator?
Your input is used only to produce your result and isn't sold or shared. See our privacy policy for the full details.