Calories burned
custodial work
224 kcal / hour Custodial work burns approximately 224 calories per hour for a 70 kg (154 lb) adult, and 112 calories in 30 minutes. Across the normal adult weight range the hourly figure runs from about 160 to 384 kcal.
It carries a MET value of 3.05 in the 2024 Adult Compendium of Physical Activities, which lists 2 measured variations of this activity from MET 2.3 to 3.8.
Calories burned custodial work 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) | 40 | 80 | 120 | 160 | 240 |
| 60 kg (132 lb) | 48 | 96 | 144 | 192 | 288 |
| 70 kg (154 lb) | 56 | 112 | 168 | 224 | 336 |
| 80 kg (176 lb) | 64 | 128 | 192 | 256 | 384 |
| 90 kg (198 lb) | 72 | 144 | 216 | 288 | 432 |
| 100 kg (220 lb) | 80 | 160 | 240 | 320 | 480 |
| 110 kg (243 lb) | 88 | 176 | 264 | 352 | 528 |
| 120 kg (265 lb) | 96 | 192 | 288 | 384 | 576 |
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.
Every official intensity of custodial work
The Compendium lists 2 separate custodial work entries, each with its own measured MET value — from 2.3 to 3.8. 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 |
|---|---|---|---|---|
| light effort (e.g., cleaning sink and toilet, dusting, vacuuming, light cleaning) | 2.3 | 169 | 217 | 11170 |
| moderate effort (e.g., buffing floors with electric buffer, feathering or sweeping arena floors, mopping, taking out the trash, vaccuming) | 3.8 | 279 | 359 | 11190 |
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.
What 224 calories an hour actually means
At MET 3.05, custodial work counts as moderate activity — it uses about 3.05 times the energy your body burns sitting still. For a 70 kg adult that works out to roughly 4 kcal per minute, or 224 kcal across a full hour.
Within occupation, that ranks 44th of 72 activities by energy cost, a little below construction (MET 3.15) and above airline flight attendant (MET 3).
Put differently: one hour of custodial work costs about the same energy as 46 minutes of ordinary walking.
On the food side, a can of cola (about 140 kcal) takes roughly 37 minutes of custodial work 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.
Questions
How many calories does custodial work burn per hour?
About 224 kcal per hour for a 70 kg (154 lb) adult, using the Compendium MET value of 3.05. A 90 kg adult burns closer to 288 kcal in the same hour, because energy cost scales almost directly with body mass.
How many calories does 30 minutes of custodial work burn?
Roughly 112 kcal at 70 kg, 96 kcal at 60 kg and 160 kcal at 100 kg. Halving the time halves the calories — the relationship is linear.
What is the MET value of custodial work?
3.05, taken as the median of the 2 custodial work entries in the 2024 Adult Compendium, which range from 2.3 to 3.8 depending on intensity. One MET is the energy you use sitting quietly, so MET 3.05 means 3.05 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.
Related activities
Three more from occupation, and three with a similar energy cost from elsewhere in the Compendium.
MET value from the 2024 Adult Compendium of Physical Activities (activity code 11170). 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.