Tools / BMR Calculator

BMR Calculator

Calculate your Basal Metabolic Rate and daily calorie needs. Uses the Mifflin-St Jeor equation with activity level multipliers.

7,500 AI Tokens Used
Feb 2, 2026 Created
healthcalculator
Categories
years
kg
cm

What is BMR?

BMR (Basal Metabolic Rate) is the number of calories your body burns at rest to maintain vital functions like breathing, circulation, and cell production.

TDEE (Total Daily Energy Expenditure) is your BMR plus the calories burned through physical activity. This is your maintenance calorie level.

This calculator uses the Mifflin-St Jeor equation, considered the most accurate for most people.

How This Tool Was Built

This tool was created entirely by AI. Here's the exact prompt used to generate it:

Prompt Used 
Create a BMR Calculator tool with these features:

1. Unit toggle (metric/imperial)
2. Gender selection
3. Inputs: age, weight, height
4. Activity level selector with descriptions
5. Calculate BMR using Mifflin-St Jeor equation
6. Calculate TDEE (BMR × activity multiplier)
7. Show daily calorie goals for:
   - Weight loss (-500 cal)
   - Maintenance
   - Weight gain (+500 cal)
8. Educational info about BMR and TDEE

Make it health-focused with green as the accent color.
AI
Claude AI Model
#
7,500 Tokens Used
100%
AI-Generated Code Origin