This on-line BFP calculator takes your gender, age, weight and height and calculates the percentage of fat in the body. The formula used is based on BMI.

- Select your Gender.
- Enter your Age.
- Enter your Height either in centimeters or in feet.
- Enter your Weight either in kilogram (kg) or in pounds (lb.).
- Then, click the Calculate BFP button. The body fat percentage will be calculated and the result will be displayed in the box below the button.

Body Fat Percent is calculated by dividing the total weight of the fat divided by the body weight. Every human needs to have a certain amount of essential fat. The essential fat percent varies hugely between women and men. Below is a chart of body fat percent ranges for women and men.

BFP Category | Women | Men |
---|---|---|

Essential Fat Percent | 10-13% | 2-5% |

Fat Percent for Athletes | 14-20% | 6-13% |

Fitness Level | 21-24% | 14-17% |

Average Level | 24-31% | 18-24% |

Obese Level | 32% and above | 25% and above |

There are several formulas used for calculating body fat percentage. This calculator uses the formula based on BMI. This will give an approximate result.

** BFP = (1.51 * BMI) − (0.70 * Age) − (3.6 * S) + 1.4**

- S = 1 for male and 0 for female.
- BMI = Body Mass Index

**BFP = (1.20 * BMI) + (0.23 * Age) − (10.8 * S) − 5.4**

- S = 1 for male and 0 for female.
- BMI = Body Mass Index

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