• BMRCalculator - Estimated (see below for more accurate methods)

    You expend energy no matter what you're doing, even when sleeping. Thus your Basal Metabolic Rate is the number of calories you'd burn if you stayed in bed all day - a tempting idea for some. If you've noticed that every year, it becomes harder to eat whatever you want and stay slim, you've also learned that your Basal Metabolic Rate decreases as you age. Likewise, depriving yourself of food in hopes of losing weight also decreases your BMR, a foil to your intentions. However, a regular routine of cardiovascular exercise can increase your BMR, improving your health and fitness when your body's ability to burn energy gradually slows down.

    Weight: Pounds
    Height: Inches
    Age: Years
    Result:

    NOW YOU HAVE YOUR BMR...

    You're nearly finished. We just have to look at how active you are in your lifestyle to get a true representation of how many calories you will need to maintain your weight. We'll now find your total daily energy expenditure or your TDEE.

     

    Harris Benedict Formula
    The Harris Benedict BMR calculator calculates the minimum amount of calories you need to maintain your weight as well as perform your day to day activities based on sex, age, height and weight. The formula used is the Harris Benedict Formula and is only an approximate estimate but it gives you a starting point.

    To determine your total daily calorie needs, multiply your BMR by the appropriate activity factor, as follows:

    How much exercise do you do? TOTAL DAILY EXPENDITURE
    Sedentary Lifestyle (Office Job & Not very active) BMR X 1.2
    Lightly Active Lifestyle (1-3 days/wk light exercise) BMR X 1.375
    Moderately Active Lifestyle (Server, chef, cleaning service, etc. and/or moderate exercise 3-5 days/wk) BMR X 1.55
    Very Active Lifestyle (Manual labor job, construction, landscaping or physically demanding occupation and/or intense exercise 5-7 days/wk) BMR X 1.725
    Over Active Lifestyle (Hard exercise daily. Active job. Training for sports contest/competition, professional athlete) BMR X 1.9
    Calculator

    The Katch-Mcardle Formula

    This formula is more accurate for everybody but you'll have to know your Lean Body Mass first. The formula works for both men and women because no guess work needs to be done with body fat levels once you've obtained your lean body mass.

    Katch-Mcardle BMR = 370 + (21.6 X lean body mass in kg)

    THEN multiply the Katch-Mcardle BMR by the Total Daily Expenditure
Last Modified on October 19, 2010