# Calories Burned Sleeping | Calculator & Formula

LAST UPDATE: September 24th, 2020

The average person burns 68-91 calories per hour of sleep. An entire 8 hours of sleep will burn 544-725 calories.

Sleep is the only activity that burns fewer calories than sitting at room temperature not actively digesting food. It is the lowest caloric burning activity.

## How many calories do you burn sleeping?

### Formula

Calories burned per minute = (MET x body weight in Kg x 3.5) ÷ 200

“MET” is a measurement of the energy cost of physical activity for a period of time. You can find an activity’s MET on the chart above.

A task with a MET of 1 is roughly equal to a person’s energy expenditure from sitting still at room temperature not actively digesting food.

A task with a MET of 2 uses twice as much energy as a task with a MET of 1. A task with a MET of 10 uses 10 times as much energy as a task with a MET of 1.

MET values “do not estimate the energy cost of physical activity in individuals in ways that account for differences in body mass, adiposity, age, sex, efficiency of movement, geographic and environmental conditions in which the activities are performed. Thus, individual differences in energy expenditure for the same activity can be large and the true energy cost for an individual may or may not be close to the stated mean MET level as presented in the Compendium.” (as quoted from the main page of the Compendium of Physical Activities).

### Example

A person weighs 180 pounds (81.65kg) and sleeps (a task that has a MET value of 0.95) for 1 hour (60 minutes).

Calories Burned from sleeping (per minute) = (0.95 x 81.65 x 3.5) ÷ 200 = 1.357

Calories Burned from sleeping (for 60 minutes) = 1.357 x 60 = 81

## How does your weight impact the number of calories you burn while sleeping?

Your weight impacts the number of calories that burn while you are asleep. Use the table below to see the number of calories you’ll burn while sleeping through the night.

## How long do you need to sleep to burn 100, 200, 500, or 1000 calories?

Your weight impacts the length of time it takes to burn a calorie goal.

Use the table below to see how long you need to sleep to burn 100, 200, or 500 calories.

## FAQ

##### How many calories do you burn sleeping?

The average person burns 68-91 calories per hour, or 544-728 calories for 8 hours of sleep. You weight is an important factor in how many calories you burn while sleeping. A 150-pound (68kg) person burns 68 calories per hour sleeping (544 in 8 hours). A 200-pound (98.1kg) person burns 91 calories per hour (728 in 8 hours).

##### Why do you burn calories while you sleep?

Your body is always consuming energy. While you sleep your heart is pumping, your hair and nails are growing, and your brain is active with dreams.
As you sleep, your body is still “on” and burning calories. Just not as many as you do as you go about your day.

##### How many calories do you burn laying in bed?

You burn slightly more calories laying awake in bed than you do sleeping. Laying awake in bed burns about 37% more calories than sleeping.

##### How long do you have to sleep to burn 500 calories?

Most people need to sleep 5 1/2 to 7 1/2 hours to burn 500 calories.