How to calculate your BMR manually without a BMR Calculator
Males and females have to use different equations to determine their BMR. Use this formula with the assumption that males have a higher percentage of lean body weight than females (more lean body weight = increased BMR).
BMR = 66 + (13.75 x weight in kg) + (5 x height in cm) – (6.8 x age in yrs)
BMR = 655 + (9.6 x weight in kg) + (1.8 x height in cm) – (4.7 x age in Yrs)
To determine your total daily calorie needs, multiply your BMR by the appropriate activity factor, as follows:
- If you are sedentary (little or no exercise) : Calorie-Calculation = BMR x 1.1
- If you are lightly active (light exercise/sports 1-3 days/week) : Calorie-Calculation = BMR x 1.275
- If you are moderately active (moderate exercise/sports 3-5 days/week) : Calorie-Calculation = BMR x 1.35
- If you are very active (hard exercise/sports 6-7 days a week) : Calorie-Calculation = BMR x 1.525
Please note these are guidelines only. We always recommend you listen to your body.