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Harris-Benedict Equation Calculator

This calculator estimates your Basal Metabolic Rate (BMR) using the Harris-Benedict equation, which considers your weight, height, age, and gender. It’s a reliable method to determine how many calories your body needs at rest and to plan for weight management, diet, or fitness goals.

Harris-Benedict Calculator

Input Fields
weight
kg
Enter your weight in kilograms
height
cm
Enter your height in centimeters
age
Enter your age in years
If enabled, the result will update automatically when you change any value.

Harris-Benedict BMR Formula

Formula
[ text{For men:} \\ \text{BMR} = 66.5 + (13.75 \times \text{Weight (kg)}) + (5.003 \times \text{Height (cm)}) – (6.75 \times \text{Age})\\[1em] text{For women:} \\ \text{BMR} = 655.1 + (9.563 \times \text{Weight (kg)}) + (1.850 \times \text{Height (cm)}) – (4.676 \times \text{Age}) \]

Explanation:

This version of the Harris-Benedict equation provides an estimate of your resting energy expenditure (BMR), which can then be multiplied by an activity factor to calculate Total Daily Energy Expenditure (TDEE).

The Harris-Benedict formula is one of the most widely used methods to estimate resting calorie needs. It helps tailor nutrition plans for weight loss, maintenance, or gain. You can use this calculator on its own or combine it with activity multipliers to get your full energy needs. It’s especially useful for personal trainers, dietitians, and health-focused individuals.

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