Tools / Productivity
Local · Private · Free

Calorie Calculator

From body stats to a daily plan: BMR, TDEE, calories for every goal, and a protein / carb / fat split in grams, computed privately on your device.

yrs
cm
ft
in
kg
Your resting burn (BMR) is multiplied by this to estimate daily needs (TDEE).

Calculated locally, your body stats never leave your browser.

How your numbers are estimated

BMR uses the Mifflin-St Jeor equation, 10×kg + 6.25×cm − 5×age, +5 for males or −161 for females, widely considered the most accurate everyday formula. Multiplying by your activity factor gives TDEE, the calories you burn per day. A deficit of about 250/500 kcal per day loses roughly 0.25/0.5 kg a week; a surplus gains it. Macros convert calories to grams at 4 kcal/g for protein and carbs, 9 kcal/g for fat. It all runs in your browser, private and free forever. Building something health-related? Digital Heroes can help.

About Calorie Calculator

Calorie Calculator is a free, private browser tool by Digital Heroes. Enter your age, height, weight, and activity level to get your BMR (resting burn) and TDEE (total daily energy expenditure) using the Mifflin-St Jeor formula. You also get calorie targets for every goal and a full protein, carb, and fat split in grams. Everything runs on your device. Nothing is uploaded, no sign-up is needed, and it works offline.

What you can do

How to use Calorie Calculator

  1. Open Calorie Calculator in your browser. No signup needed.
  2. Select your sex, then enter your age, height, and weight. Switch to imperial units if you prefer.
  3. Pick your activity level from the dropdown. Your BMR and TDEE appear instantly.
  4. Review the daily calorie targets table for every goal, then choose a goal and macro preset in the Macro split section.
  5. Adjust the protein, carb, and fat sliders if needed, then copy your results to the clipboard.

Frequently asked questions

Is Calorie Calculator free?

Yes, Calorie Calculator is completely free for everyone. No sign-up, no account and no usage limits.

Is it private? Are my files uploaded anywhere?

No. Calorie Calculator runs entirely in your browser on your own device, so your data never leaves your computer and nothing is uploaded to a server.

Does it work offline?

Yes. This tool is a Progressive Web App, once the page has loaded it keeps working offline, and you can install it as an app from your browser.

Do I need to install anything or create an account?

No. Just open the page and start using it. Installing it as an app is optional and only adds offline convenience.

What does Calorie Calculator do?

It computes your BMR and TDEE using the Mifflin-St Jeor formula, shows daily calorie targets for five goals (loss, maintenance, gain), and breaks your chosen target into protein, carb, and fat grams using preset or custom ratios.

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