Precision Calculator
Uses the scientifically-validated Mifflin-St Jeor equation to calculate your exact maintenance calories based on your body and lifestyle.
Calculate nowFree · No Signup · Runs in Your Browser
Finally know if you're
eating right. Free, forever.
Calculate your maintenance calories, log your meals in plain English, and build a streak worth showing off.
No account needed. Your data stays on your device.
Mifflin-St Jeor formulaPlain-English meal loggingStreak & badge trackingData stored locally — always private
How it works
Everything you need to stay on track.
Three tools in one — a precise calculator, a smart meal logger, and a habit streak system that keeps you honest.
Plain-English Logging
Type "2 scrambled eggs and a cup of milk" and get accurate calorie data instantly. No barcode scanning, no searching through databases manually.
Try loggingStreak & Badges
Stay on track with a daily streak counter. Earn badges at 7, 30, and 100 days. Share your streak on social media to keep yourself accountable.
View streaksSimple habit loop
Build consistency,
not willpower.
CalorieMetric works because it removes the friction. No app store downloads, no account creation. Just open the site and log — that's it.
- 01Calculate your goal.
Takes 30 seconds. Enter your stats and get your maintenance calories.
- 02Log what you eat.
Type your meal in plain English. We find the calories for you.
- 03Watch your streak grow.
Hit your goal today, and your streak increments. Miss a day, it resets.
Ready to finally know
what you're eating?
Free. No signup. No app. Works on any device. Your data never leaves your browser.