Estimate how many calories sex burns from your body weight and duration, using published MET values for light, moderate or vigorous effort.
Sex Calories Burned Formula
Variables:
- Total kcal includes energy expended at rest during the entered time
- Weight is converted to kilograms: 1 lb = 0.45359237 kg
- Time is the total session length in minutes
- MET is the selected standardized activity intensity, relative to standardized rest
- The 2024 Adult Compendium presets are 1.8 MET for passive/light effort, 3.0 for general/moderate effort, and 5.8 for active/vigorous effort
Choose an effort assumption in either solve mode. The 2024 Adult Compendium sexual-activity table applies to adults ages 19–59 and provides standardized estimates, not precise individual measurements. A custom MET is an entered assumption. Above-rest calories subtract a standardized 1-MET resting allowance; personal resting metabolism may differ. See the Compendium scope.
How to Calculate Calories Burned During Sex
- Enter your total time in minutes.
- Enter body weight and select pounds or kilograms.
- Choose passive/light, general/moderate, active/vigorous or a custom MET assumption.
- Select Calculate. The model uses MET × 3.5 × kg × minutes ÷ 200.
- Read the estimated total and above-rest calories. The time mode reverses the total-energy equation for an entered goal; it is not an exercise recommendation.
Example
Time = 20 min
Body Weight = 160 lb
General/moderate effort = 3.0 MET; 160 lb = 72.5747792 kg
Average Calories Burned by Time
The table uses the general/moderate 3.0-MET preset and the same total-energy conversion as the calculator. Values are kcal rounded to one decimal, including standardized resting energy.
| Body Weight | 10 min | 20 min | 30 min |
|---|---|---|---|
| 120 lb | 28.6 | 57.2 | 85.7 |
| 160 lb | 38.1 | 76.2 | 114.3 |
| 200 lb | 47.6 | 95.3 | 142.9 |
What Changes the Total?
- Longer sessions raise calories burned directly.
- Higher body weight raises calories burned minute by minute.
- More continuous movement pushes the total higher.
- Vigorous effort burns substantially more per minute than light effort.
Frequently Asked Questions
How many calories are burned in 10 minutes of sex?
At average effort, a 120 lb person burns about 28.6 calories in 10 minutes, a 160 lb person burns about 38.1, and a 200 lb person burns about 47.6.
Should I use basic or advanced mode?
Both solve modes use the chosen effort assumption. Optional options add a weekly total and a separate study comparison. The 2013 Frappier study observed 21 young healthy heterosexual couples with an activity armband. Its sample means of 4.2 kcal/min for men and 3.1 for women are not universal or weight-adjusted predictions, and do not replace the selected MET.
Why does body weight change the result?
Moving more body mass requires more energy, so calories burned rise as body weight rises.
Does doubling the time double the calories?
Yes. If effort level stays the same, doubling the time doubles the calories burned.
