GrabConvert
BMR Calculator
Your basal metabolic rate by the Mifflin-St Jeor equation — the calories your body burns doing nothing at all — with the maintenance figures for sedentary and active life beside it.
General information only — not medical advice.
Your basal metabolic rate by the Mifflin-St Jeor equation — the calories your body burns doing nothing at all — with the maintenance figures for sedentary and active life beside it. Everything runs in your browser; nothing about you is sent anywhere.
The BMR Calculator on GrabConvert does its one job with no ceremony: Basal metabolic rate — calories burned at rest. No account, no watermark, nothing kept — it runs, you download the result, and that is the whole transaction.
How to use the bmr calculator
- Enter your figures above — the result updates live as you type, and the defaults are sensible starting points.
- Everything is calculated right here in your browser: nothing you type is uploaded, stored or shared.
- Download the result where a download button is offered, or just copy the numbers you need.
Why people pick this over other converters
- No account, ever. Most big converter sites push sign-ups and paid tiers for basic jobs. Here the tool just works.
- No watermarks and no job counters on standard tools — fair-use rate limits keep things fast for everyone — and a generous 2 GB upload limit.
- Private by design: your file is processed in a temporary folder and deleted the moment your download finishes. Nothing is stored or shared.
- Fast: this page is a fraction of the size of the ad-heavy alternatives, and the same account-free toolbox has 529 other tools when you need them.
FAQ
How is BMR different from TDEE?
BMR is rest-only. TDEE multiplies it by your activity to estimate total daily burn — there is a separate TDEE calculator here that shows every activity level at once.
Is this really free?
Yes — completely. A short ad before processing keeps every tool free; no account, subscription or credits are ever required.
What happens to my file?
It is processed in a temporary folder and deleted the moment your download finishes. We never store, view or share uploads.
Do I need to install anything?
No. Everything runs in your browser session against our servers — any phone, tablet or computer works.
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