Calories burned
walk/run play with children
342 kcal / hour Walk/run play with children burns approximately 342 calories per hour for a 70 kg (154 lb) adult, and 171 calories in 30 minutes. Across the normal adult weight range the hourly figure runs from about 244 to 586 kcal.
It carries a MET value of 4.65 in the 2024 Adult Compendium of Physical Activities, which lists 2 measured variations of this activity from MET 3.5 to 5.8.
SOURCE·2024 Adult Compendium of Physical Activities·REVIEWED JUL 2026
MET 4.65 × 3.5 × 70 kg ÷ 200 = 5.70 kcal/min × 30 min = 171 kcal
Source—2024 Adult Compendium of Physical Activities—code 21018—ACSM energy equation—retrieved 2026-07
How this is worked out
- Take the MET value for walk/run play with children from the 2024 Adult Compendium of Physical Activities: MET 4.65, the median of its 2 measured variations (MET 3.5–5.8).
- Convert MET to a rate using the ACSM relationship: multiply by 3.5, then by body mass in kilograms, then divide by 200. That gives kilocalories per minute.
- Multiply the rate by the number of minutes actually spent.
- Round to whole kilocalories. Nothing else is applied — no age factor, no sex factor, no proprietary adjustment, because the underlying data does not support one.
kcal/min = MET × 3.5 × mass(kg) ÷ 200 kcal = kcal/min × minutes 4.65 × 3.5 × 70 ÷ 200 = 5.70 kcal/min 5.70 × 60 min = 342 kcal
Calories burned walk/run play with children by body weight
Energy cost scales with the mass you move, so body weight changes the answer more than anything else.
| Body weight | 15 min | 30 min | 45 min | 60 min | 90 min |
|---|---|---|---|---|---|
| 50 kg (110 lb) | 61 | 122 | 183 | 244 | 366 |
| 60 kg (132 lb) | 73 | 146 | 220 | 293 | 439 |
| 70 kg (154 lb) | 85 | 171 | 256 | 342 | 513 |
| 80 kg (176 lb) | 98 | 195 | 293 | 391 | 586 |
| 90 kg (198 lb) | 110 | 220 | 330 | 439 | 659 |
| 100 kg (220 lb) | 122 | 244 | 366 | 488 | 732 |
| 110 kg (243 lb) | 134 | 269 | 403 | 537 | 806 |
| 120 kg (265 lb) | 146 | 293 | 439 | 586 | 879 |
Figures in kilocalories (the "calories" on food labels). The highlighted row is the 70 kg reference adult used in the headline figure; the highlighted column is one hour.
SOURCE·2024 Adult Compendium of Physical Activities·REVIEWED JUL 2026
Every official intensity of walk/run play with children
The Compendium lists 2 separate walk/run play with children entries, each with its own measured MET value — from 3.5 to 5.8. Most calculators collapse all of this into one number. Pick the row that matches what you actually did.
| Variation | MET | kcal/hr at 70 kg | kcal/hr at 90 kg | Code |
|---|---|---|---|---|
| moderate, only active periods | 3.5 | 257 | 331 | 21018 |
| vigorous, only active periods | 5.8 | 426 | 548 | 21019 |
Codes are 2024 Adult Compendium activity codes. A dash means the code could not be read unambiguously from the published table, so it is left blank rather than guessed — the MET value and description are unaffected.
SOURCE·2024 Adult Compendium of Physical Activities·2 coded rows·REVIEWED JUL 2026
What 342 calories an hour actually means
At MET 4.65, walk/run play with children counts as moderate activity — it uses about 4.65 times the energy your body burns sitting still. For a 70 kg adult that works out to roughly 6 kcal per minute, or 342 kcal across a full hour.
Within volunteer activities, that ranks 1st of 12 activities by energy cost — the highest in its group and above standing, moderate/heavy work (MET 4.5).
Put differently: one hour of walk/run play with children costs about the same energy as 70 minutes of ordinary walking.
On the food side, a plain bagel (about 245 kcal) takes roughly 43 minutes of walk/run play with children to offset at that body weight. That framing is useful for scale, but it is worth saying plainly: exercise and diet are not a ledger that cancels neatly, and appetite tends to rise with activity.
A number this clean is a model. It does not know your gradient, your gear, the wind, or how hard you were actually trying.
Questions
How many calories does walk/run play with children burn per hour?
About 342 kcal per hour for a 70 kg (154 lb) adult, using the Compendium MET value of 4.65. A 90 kg adult burns closer to 439 kcal in the same hour, because energy cost scales almost directly with body mass.
How many calories does 30 minutes of walk/run play with children burn?
Roughly 171 kcal at 70 kg, 146 kcal at 60 kg and 244 kcal at 100 kg. Halving the time halves the calories — the relationship is linear.
What is the MET value of walk/run play with children?
4.65, taken as the median of the 2 walk/run play with children entries in the 2024 Adult Compendium, which range from 3.5 to 5.8 depending on intensity. One MET is the energy you use sitting quietly, so MET 4.65 means 4.65 times that rate.
Is this an exact number of calories?
No, and no calculator can give you one. MET values are population averages measured in laboratory conditions; your own figure varies with fitness, technique, terrain, temperature and body composition. Treat these numbers as a solid estimate for planning, not a precise measurement — and treat any device or site claiming three-digit precision with suspicion.
MET value from the 2024 Adult Compendium of Physical Activities (activity code 21018). Calories computed as MET × 3.5 × weight kg ÷ 200 per minute. General information only — not medical, fitness or nutrition advice. Calorie figures are population estimates and vary between individuals.
