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Updated June 11, 2014

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Definition: A calorie is a measure of energy expenditure. The calories referred to in diet and exercise are kilocalories (kcal) - 1000 of the calories referred to in science labs for measuring chemical reactions.

A pound of fat stores 3500 calories (kcal). To lose a pound of fat in a week, a person must eat approximately 500 fewer calories (kcal) per day than he/she expends in metabolism and exercise.

The range of daily calorie burning each day is from 1600 for a sedentary woman or for an older person to 2800 for active men, very active women and teenage boys.

Calories per Day Calculator: Find how many calories you burn each day based on your height, weight, age, and activity level.

Walking expends approximately 100 calories per mile for a 150 pound person.
Walking Calorie Calculator: find out how many calories you can burn per mile based on your weight and speed.

CalorieCount: Use this free online site and mobile app to find out how many calories are in food items, and to track your diet and exercise calories.

Pronunciation: cal er ee

Common Misspellings: calourie

Examples: I will walk for 3.5 miles to burn off the calories in that Snickers bar.

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