Calories burned sleeping calculator
Your body keeps working while you sleep. See what a night burns for you.
Updated
Your result
For 8 hours of sleeping at 65 kg:
450kcal
That’s your resting rate: about 55 kcal an hour.
Sleep is already in your TDEE: it’s the resting rate the calculator builds on.
Calories burned sleeping: the key numbers
- 8 hours of sleep uses about 450 kcal for a 65 kg woman and 640 for a 100 kg man: about your resting rate.
- Measured overnight, adults burned 95% of their basal rate in one study (Goldberg, 1988) and 100% in another (Wouters-Adriaens, 2006).
- The figure is your resting rate from the Mifflin-St Jeor equation, as the Compendium puts sleeping at 1 MET, the resting level.
Already in your TDEE
Your resting rate is the base the TDEE calculator builds on, and sleep runs at about that rate. There’s nothing to add.
For your body and time
| Activity | kcal | Compendium value |
|---|---|---|
| Sleeping | 450 | 1 MET, Compendium code 07030 |
| Lying awake | 450 | 1 MET, Compendium code 07011 |
| Sitting quietly | 450 | 1 MET, Compendium code 07021 |
| Standing: Standing still | 610 | 1.3 METs, Compendium code 07040 |
Each figure uses the activity’s cost from the 2024 Compendium of Physical Activities, which gives it in METs of oxygen use per kg of body weight, so the extra scales with your weight. Sleeping is 1 MET, so it adds nothing above your resting rate. What you’d burn anyway comes from your own resting rate (Mifflin-St Jeor), not the standard 1 MET: in 769 adults, measured resting burn averaged 0.84 kcal per kg an hour against the standard 1 (Byrne, 2005).
Compare every activity on the calories burned calculator.
More activities: walking, running, lifting weights, swimming, cycling, elliptical, treadmill, hiking, standing, yoga, Pilates, climbing stairs, dancing, rowing, gardening, golf, cleaning.
Short answers
How many calories do you burn sleeping?
About your resting rate. For a 65 kg woman, 8 hours’ sleep uses about 450 kcal, and for a 100 kg man about 640. Measured overnight in a calorimeter, adults burned 95% of their basal rate in one study (Goldberg, 1988) and 100% in another (Wouters-Adriaens, 2006).
Do you burn fewer calories asleep than awake and resting?
A little, at the quietest point of the night: about 10% below basal rate for the lowest hour. Over the whole night it evens out, and overnight burn matched basal rate (Seale and Conway, 1999).
Is sleep part of my TDEE?
Yes. Your resting rate is the base the TDEE calculator builds on, and sleep runs at about that rate, so there’s nothing to add.
Sources
Checked against each source on 22 and 23 October 2026
- Herrmann SD, et al. (2024). 2024 Adult Compendium of Physical Activities: a third update of the energy costs of human activities. J Sport Health Sci 13(1):6–12. PMID 38242596
- Goldberg GR, et al. (1988). Overnight and basal metabolic rates in men and women. Eur J Clin Nutr 42(2):137–44. PMID 3378547
- Seale JL, Conway JM (1999). Relationship between overnight energy expenditure and BMR measured in a room-sized calorimeter. Eur J Clin Nutr 53(2):107–11. PMID 10099943
- Wouters-Adriaens MP, Westerterp KR (2006). Basal metabolic rate as a proxy for overnight energy expenditure: the effect of age. Br J Nutr 95(6):1166–70. PMID 16768840
- Mifflin MD, St Jeor ST, et al. (1990). A new predictive equation for resting energy expenditure in healthy individuals. Am J Clin Nutr 51(2):241–7. PMID 2305711
- Byrne NM, et al. (2005). Metabolic equivalent: one size does not fit all. J Appl Physiol 99(3):1112–9. PMID 15831804