Calorie Calculator
If would like to lose weight you need to either take up some exercise, increase your daily activities,
or decrease your daily caloric intake. The daily calorie intake calculator below will tell you what your
current calorie intake has to be to maintain your weight. If you looking to permanently keep the weight off
the you need to reduce your caloric intake. See the "Calories needed a Day" article for more information.
Science tells us that 1 pound of fat is equal to 3500 calories, so a daily calorie deficit of 500 should
result in the loss of one pound of fat per week. In reality things don't quite work that efficiently!
Everyone is different and has a different lifestyle and because of this everyone will have a different
daily calorie intake requirement. The calculator below will give you are reasonable estimate of your
current daily calorie intake. Using this you can calculate how many calories you can have to start reducing your
weight.
Mifflin - St Jeor Formula
TheCalorie Needs Calculator currently uses the formula proposed by MD Mifflin and ST St Jeor1.
Why This Formula?
As recent as 2005, the ADA (American Dietetic Association) published a comparison of various equations2.
The Mifflin-St Jeor was found to be the most accurate.
Men
10 x weight (kg) + 6.25 x height (cm) - 5 x age (y) + 5
Women
10 x weight (kg) + 6.25 x height (cm) - 5 x age (y) - 161.
Lean Mass Formula
This can be selected on the calculator. It is a variation1 on the basic Mifflin-St Jeor equation
that will base the equation on Fat Free Mass (FFM) or Lean Mass. This is more accurate for those who
are leaner (and who know their body fat percentage!).
Men & Women
19.7 * Fat Free Mass + 413
Where Fat Free Mass = Weight - (Body Fat Percentage * Weight).
Harris-Benedict Formula
This formula was created in 1919, and due to changing lifestyles, it tends
to overstate calorie needs by 5%. The results tend to be skewed towards both obese and young people3.
Men
66.5 + (13.75 X weight in kg) + (5.003 X height in cm) - (6.775 X age in years)
Women
655.1 + (9.563 X weight in kg) + (1.85 X height in cm) - (4.676 X age in years)
Love this calculator. Ive started using these tools to track my daily intake and I am actually seeing results.
Thanks Planned-Diet