Calorie Calculator

The Calorie Calculator can be used to estimate the number of calories a person needs to consume each day. This calculator can also provide some simple guidelines for gaining or losing weight.

Modify the values and click the calculate button to use

Calorie Calculator

ages 15 - 80
pounds
ages 15 - 80
cm
kg
Activity Level Guidelines:
  • Exercise: 15‑30 minutes of elevated heart rate activity.
  • Intense exercise: 45‑120 minutes of elevated heart rate activity.
  • Very intense exercise: 2+ hours of elevated heart rate activity.

BMI Calculator

ages: 2 - 120
pounds
ages: 2 - 120
cm
kg

Food Energy Converter

The following converter can be used to convert between Calories and other common food energy units.

=
4.1868
About the Formulas

This Calorie Calculator is based on several equations, and the results of the calculator are based on an estimated average. The three equations used by the calculator are:

Mifflin-St Jeor Equation:

For men:
BMR = 10W + 6.25H - 5A + 5

For women:
BMR = 10W + 6.25H - 5A - 161

Revised Harris-Benedict Equation:

For men:
BMR = 13.397W + 4.799H - 5.677A + 88.362

For women:
BMR = 9.247W + 3.098H - 4.330A + 447.593

Katch-McArdle Formula:

BMR = 370 + 21.6(1 - F)W

where: W is body weight in kg, H is body height in cm, A is age, F is body fat in percentage

The Mifflin‑St Jeor Equation is considered the most accurate equation for calculating BMR with the exception that the Katch‑McArdle Formula can be more accurate for people who are leaner and know their body fat percentage.