Estimate calories and kilojoules burned during a police shift, based on your body weight, shift duration, and which of three duty tiers best matches how the shift was spent — walking a foot patrol, standing and directing traffic, or the physical exertion of making an arrest. Figures come from the 2024 Adult Compendium of Physical Activities, applied here to a foot-patrol context common to Australian policing. A real shift usually mixes several duty types, so pick whichever tier best matches the bulk of the time on shift, or run the calculator more than once for different portions of the shift.
Police officer calorie burn is estimated with calories = MET × body weight (kg) × duration (hours), using three duty tiers from the 2024 Adult Compendium of Physical Activities: walking a foot patrol (MET 3.8, code 11524), standing and directing traffic (MET 2.5, code 11525), and making an arrest involving standing and physical exertion (MET 4.0, code 11528). An 85 kg officer working an 8-hour shift burns around 2,584 kcal (about 10,811 kJ) on foot patrol, around 1,700 kcal (about 7,113 kJ) directing traffic, and around 2,720 kcal (about 11,380 kJ) if the shift's exertion level matched making an arrest throughout. Only one of these three MET values is literature-supported; the other two are Compendium-flagged estimates — see the disclosure below for exactly which ones.
| Duty Tier | MET | Calories | Kilojoules |
|---|
The calculation combines a MET (Metabolic Equivalent of Task) value for the type of duty being performed, the officer's body weight, and how long that duty lasted. This calculator uses three MET values taken from the 2024 Adult Compendium of Physical Activities: Police Officer, Walking (code 11524, MET 3.8), Police, directing traffic, standing (code 11525, MET 2.5), and Police, making an arrest, standing (code 11528, MET 4.0).
| Duty Tier | MET | Calories (85 kg, 8 hr shift) | Kilojoules |
|---|---|---|---|
| Patrol on foot / walking | 3.8 | 2,584 kcal | 10,811 kJ |
| Directing traffic / standing | 2.5 | 1,700 kcal | 7,113 kJ |
| Making an arrest / standing, exertion | 4.0 | 2,720 kcal | 11,380 kJ |
It's worth being upfront about what each of these three duty tiers actually looks like on a real shift, because the calories-burned gap between them is meaningful and depends heavily on how a shift was actually spent. Patrol on foot / walking (MET 3.8) describes a beat walked at a normal, sustained pace — moving through a precinct, mall, or public event on foot for extended stretches. Directing traffic / standing (MET 2.5) describes a largely stationary duty: standing at an intersection or event, with arm and hand signalling but relatively little whole-body movement, which is why it sits lower than either of the other two tiers. Making an arrest / standing, exertion (MET 4.0) describes the short but physically demanding bursts of effort involved in restraining, cuffing, or otherwise physically managing a person during an arrest.
Because the gap between tiers mostly reflects how much of the time was spent moving versus standing still, the honest way to pick a tier is to think about the average effort across the whole shift being estimated, not a single high-intensity moment. A shift spent mostly on a walking beat is genuinely in the foot-patrol tier even if there's a brief incident partway through. A shift spent mostly stationed at an intersection or checkpoint fits the directing-traffic tier well, and only shifts with sustained or repeated physical incidents belong in the arrest tier for their duration.
Policing in Australia typically involves a mix of duty types across a single shift — foot patrol through shopping precincts, transport hubs, or public events; traffic control at intersections, roadworks, or major incidents; and, less frequently but more intensely, physical exertion during an arrest or crowd-control situation. Because shift length in policing commonly runs to eight, ten, or twelve hours depending on the roster, even moderate-intensity duty like walking a beat adds up to substantial energy expenditure over a full shift. This is part of why physical fitness is treated as a core occupational requirement in Australian police services rather than an optional extra: officers need the aerobic base to sustain hours of patrol and the strength and power to respond safely if a shift suddenly demands a burst of physical exertion.
This table holds duty constant at patrol on foot / walking (MET 3.8) for a full 8-hour shift, so you can see how much body weight alone changes the total.
| Body Weight | MET | Calories (8 hr shift) | Kilojoules |
|---|---|---|---|
| 60 kg | 3.8 | 1,824 kcal | 7,632 kJ |
| 70 kg | 3.8 | 2,128 kcal | 8,904 kJ |
| 80 kg | 3.8 | 2,432 kcal | 10,175 kJ |
| 90 kg | 3.8 | 2,736 kcal | 11,447 kJ |
| 100 kg | 3.8 | 3,040 kcal | 12,719 kJ |
Here body weight is fixed at 85 kg while both shift length and duty tier change, so you can compare how much a longer shift and a more demanding duty type each add to the total.
| Shift Length | Directing Traffic (MET 2.5) | Patrol Walking (MET 3.8) | Making an Arrest (MET 4.0) |
|---|---|---|---|
| 4 hours | 850 kcal / 3,556 kJ | 1,292 kcal / 5,406 kJ | 1,360 kcal / 5,690 kJ |
| 8 hours | 1,700 kcal / 7,113 kJ | 2,584 kcal / 10,811 kJ | 2,720 kcal / 11,380 kJ |
| 10 hours | 2,125 kcal / 8,891 kJ | 3,230 kcal / 13,514 kJ | 3,400 kcal / 14,226 kJ |
| 12 hours | 2,550 kcal / 10,669 kJ | 3,876 kcal / 16,217 kJ | 4,080 kcal / 17,071 kJ |
Australian nutrition panels list energy in kilojoules, not calories, so it's worth converting shift energy expenditure into the same unit your food packaging uses. Multiply your calorie figure by 4.184 to get kilojoules. An 85 kg officer's 8-hour foot-patrol shift burns about 2,584 kcal, roughly 10,811 kJ, while the same shift spent mostly directing traffic comes in lower at about 1,700 kcal, roughly 7,113 kJ — a useful pair of figures to weigh up against meal planning around a long or physically demanding shift.
How many calories does a police officer burn on shift?
It depends on which duty type best describes the shift. An 85 kg officer working an 8-hour shift burns around 2,584 kcal (about 10,811 kJ) on patrol on foot / walking (MET 3.8), around 1,700 kcal (about 7,113 kJ) directing traffic / standing (MET 2.5), and around 2,720 kcal (about 11,380 kJ) if the shift's exertion matched making an arrest / standing, exertion (MET 4.0) throughout. Enter your own weight and shift length in the calculator above for a personalised figure.
Which police duty MET values on this page are estimated rather than literature-confirmed?
The 2024 Adult Compendium of Physical Activities flags directing traffic / standing (MET 2.5, code 11525) and making an arrest / standing, exertion (MET 4.0, code 11528) as estimated figures rather than values confirmed by dedicated published research. The patrol on foot / walking value (MET 3.8, code 11524) does not carry that same flag, meaning it's backed by dedicated literature. We're disclosing this distinction precisely rather than treating all three MET values as equally certain — the foot-patrol figure is the most evidence-backed number on this page, while the directing-traffic and making-an-arrest figures are reasonable planning estimates.
Is foot patrol good exercise for police officers?
Foot patrol involves a sustained, moderate walking pace held for long stretches of a shift, which makes it a genuinely useful contributor to an officer's overall physical activity, comparable in intensity terms to a brisk walk. It's not a substitute for structured strength or fitness training, but over an 8-hour shift the accumulated calorie burn from foot patrol alone is substantial, as the worked example above shows. Officers rostered mostly onto stationary duties like directing traffic may need to make up that difference through dedicated training time.
Why is police fitness testing required?
Policing can shift without warning from low-intensity duty, like standing at an intersection, to a short but intense burst of physical exertion during an arrest or an incident response. Fitness testing exists to confirm officers can meet that intensity gap safely — sustaining hours of patrol duty while still having the strength, power, and cardiovascular capacity available for a sudden physical confrontation. This calculator's own tier structure reflects that same gap: directing traffic (MET 2.5) sits well below making an arrest (MET 4.0) in energy demand.
Does standing duty like directing traffic burn far less than an active patrol?
Yes. Directing traffic / standing (MET 2.5) is the lowest-intensity of the three duty tiers used on this page, well below patrol on foot / walking (MET 3.8) and making an arrest / standing, exertion (MET 4.0). Over an 8-hour shift for an 85 kg officer, that gap works out to roughly 884 kcal fewer burned on a traffic-duty shift compared with a foot-patrol shift of the same length, simply because standing largely stationary demands far less energy than sustained walking.
How does making an arrest compare to routine patrol duties in energy expenditure?
Making an arrest / standing, exertion (MET 4.0) is the highest-intensity duty tier on this page, higher than both patrol on foot / walking (MET 3.8) and directing traffic / standing (MET 2.5). In practice, arrests are usually short, high-intensity events rather than an all-shift activity, so this tier is most useful for estimating the energy cost of the minutes actually spent on a physical incident, rather than assuming an entire shift was spent at that exertion level.
How do multiple duty types across one shift add up?
Because calories scale directly with duration, a shift split across duty types is best estimated by calculating each portion separately and adding the results — for example, six hours of foot patrol plus two hours directing traffic for an 85 kg officer, rather than assuming the whole eight hours was one duty type. Running the calculator once per duty segment and totalling the results will generally be more accurate than picking a single tier for an entire mixed shift.
How do I convert calories burned on shift into kilojoules?
Multiply the calorie figure by 4.184, the standard conversion between kilocalories and kilojoules used on Australian food labels. An 85 kg officer's 8-hour foot-patrol shift burns about 2,584 kcal, which converts to roughly 10,811 kJ — useful if you want to compare shift energy expenditure against the energy value printed on food or drink consumed on or after shift.