# Calorie Calculator | walking at 3 mph (level, firm surface)

If someone who weighs 70 Kg or 154.3 lb walking at 3 mph (level, firm surface) for 30 minutes will burn 122.5 calories.

### Calories / Fat Burned Calculator

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By using the calories burned calculator, you just need to fill some data and get the value of calories burned in Kcal.

## How to calculate calories (burned)

The number of calories you burn while exercising is dependent on:

- the exercise you do
- your weight
- the time spent doing the activity

By multiplying the body weight in kg by the MET ^{(*)} value and duration of activity, you can estimate the energy expenditure in Kcal specific to a persons body weight. In this example, walking at 3 mph (level, firm surface) at a 3.5 MET value, burns 3.5 Kcal/kg x body weight/h.

A 70 kg individual walking at 3 mph (level, firm surface) for 30 minutes expends the following:

(3.5 METs x 70 kg body weight) x (30 min/60 min) = 122.5 Kcal.

3.5 is the value in METs for walking at 3 mph (level, firm surface).

(*) MET - Metabolic equivalent