Basal Metabolic Rate calculator.
The BMR Calculator estimates your Basal Metabolic Rate — the number of calories your body burns at complete rest just to keep you alive. It is the standard basal metabolic rate calculator for Indians and uses the BMR calculator using Mifflin St Jeor formula, which research has shown to be more accurate than the older Harris-Benedict equation for most adults. Enter your age, sex, height, and weight, and the calculator tells you how many calories do I burn at rest, plus your TDEE (Total Daily Energy Expenditure) once you pick an activity level. The difference between BMR and TDEE explained simply: BMR is what you'd burn lying in bed all day; TDEE multiplies BMR by an activity factor (1.2 sedentary up to 1.9 very active) to estimate total daily calorie burn including movement, work, and exercise. Use the result to learn how to use BMR to plan a diet — eat at TDEE to maintain weight, eat 300–500 kcal below to lose weight, or eat 200–400 kcal above to gain muscle.
Yes, BMR Calculator is 100% free to use with no signup, no watermark, no daily caps, and no hidden charges. You can use it as many times as you need.
Yes — files are processed directly in your browser whenever possible, so they never reach our servers. That keeps your data private when you use BMR Calculator online.
Yes. BMR Calculator works on iPhone, iPad, Android phones and tablets, plus Windows, Mac, and Linux laptops. Just open the page in your mobile browser — there is nothing to install.
No download and no installation required. BMR Calculator runs entirely in your web browser, so it works instantly on any device with an internet connection.
Yes. BMR Calculator runs in any modern mobile browser — Safari on iPhone and iPad, Chrome on Android, plus every other major mobile browser. There is nothing to install from the App Store or Play Store.
BMR Calculator works in every up-to-date browser including Google Chrome, Mozilla Firefox, Apple Safari, Microsoft Edge, Brave, and Opera, on both desktop and mobile.
No. The processing for BMR Calculator happens entirely inside your browser, so your files stay on your own device. Nothing is uploaded to our servers and nothing is kept after you close the page.
There is no fixed server-side limit because BMR Calculator runs in your browser. The practical ceiling depends on your device's memory — most laptops and phones handle files up to around 100–200 MB without trouble.
No account, no email, no signup. Just open the page and use BMR Calculator straight away. There are no usage limits, no daily caps, and no premium tier hidden behind a paywall.
No. The output you download from BMR Calculator is clean — no OfficeToolsHub watermark, no logo, no "made with" badge, no extra metadata added. The file is yours to use however you like.
For most browser-based tools the heavy lifting runs locally, so a brief network drop after the page loads usually does not interrupt your work. We still recommend a stable connection for the initial page load.