Estimate calories and kilojoules burned doing skilled trades work, based on your body weight, the specific trade task, and how long you're on the job. This calculator uses four tiers drawn from the Occupation section of the 2024 Adult Compendium of Physical Activities: electrical work such as hooking up wire, tapping and splicing; masonry and concrete work at light effort; masonry and concrete work at moderate effort; and general plumbing activities. It's built for tradespeople and apprentices who want a rough read on the physical output of a shift on the tools, whether you're wiring a switchboard, laying block at a steady pace, or running copper and PVC through a job site.
Skilled trades calorie burn is estimated with calories = MET × body weight (kg) × duration (hours), using four MET values from the Occupation section of the 2024 Adult Compendium of Physical Activities: electrical work (MET 3.3, code 11130), masonry/concrete at light effort (MET 2.5, code 11482), masonry/concrete at moderate effort (MET 4.3, code 11480), and plumbing activities (MET 3.0, code 11516). An 80 kg tradesperson over a 60-minute shift burns around 264 kcal (about 1,105 kJ) doing electrical work, around 200 kcal (about 837 kJ) doing light-effort masonry, around 344 kcal (about 1,439 kJ) doing moderate-effort masonry, and around 240 kcal (about 1,004 kJ) doing plumbing. Three of these four MET values are literature-supported figures — only the plumbing value is a Compendium-flagged estimate, see the disclosure below.
| Trade Task | MET | Calories | Kilojoules |
|---|
The calculation uses a MET (Metabolic Equivalent of Task) value for your trade task, your body weight, and how long you worked. This calculator uses four MET tiers taken directly from the Occupation section of the 2024 Adult Compendium of Physical Activities — electrical work, e.g. hooking up wire, tapping and splicing (code 11130, MET 3.3), masonry/concrete at light effort (code 11482, MET 2.5), masonry/concrete at moderate effort (code 11480, MET 4.3), and plumbing activities (code 11516, MET 3.0). Because a work shift is usually measured in minutes or hours worked rather than a single round number, the calculator takes your minutes input and converts it to hours (hours = minutes ÷ 60) before applying the formula.
| Trade Task | MET | Calories (80 kg, 60 min) | Kilojoules |
|---|---|---|---|
| Electrical work (wiring, tapping, splicing) | 3.3 | 264 kcal | 1,105 kJ |
| Masonry/concrete, light effort | 2.5 | 200 kcal | 837 kJ |
| Masonry/concrete, moderate effort | 4.3 | 344 kcal | 1,439 kJ |
| Plumbing activities | 3.0 | 240 kcal | 1,004 kJ |
Electrical work, wiring, tapping and splicing covers the fine-motor, mostly standing-and-reaching effort of running cable, connecting circuits, mounting switchboards and terminating wiring — a task that involves plenty of time on your feet, reaching overhead or into wall cavities, and crouching at floor level, but relatively little heavy lifting compared with the masonry tiers. Masonry and concrete work at light effort sits at the bottom of the physical scale here, covering steadier tasks such as mixing small batches, pointing, or laying block at an unhurried pace. Masonry and concrete work at moderate effort is a considerably heavier tier, reflecting the sustained lifting, carrying and positioning of block, brick and mixed concrete that comes with a full day of bricklaying or concreting at a working pace. Plumbing activities cover the general mixed-effort work of a plumber — cutting and joining pipe, working in roof spaces and under floors, carrying fittings and fixtures, and moving between fixed and awkward positions on a job site.
The gap between the lightest and heaviest tiers here is substantial: moderate-effort masonry work burns close to double what light-effort masonry or electrical work burns per hour at the same body weight. That's a meaningful difference if you're trying to get a realistic read on a mixed trade day — a morning spent pulling cable through a roof space is a genuinely lower-intensity block of work than an afternoon spent laying block or hauling bagged cement, even though both might get lumped together as "on the tools" in casual conversation.
The table below holds the task constant at electrical work (MET 3.3) for a 60-minute shift, so you can see how much body weight alone changes the total.
| Body Weight | MET | Calories (60 min) | Kilojoules |
|---|---|---|---|
| 60 kg | 3.3 | 198 kcal | 828 kJ |
| 70 kg | 3.3 | 231 kcal | 967 kJ |
| 80 kg | 3.3 | 264 kcal | 1,105 kJ |
| 90 kg | 3.3 | 297 kcal | 1,243 kJ |
| 100 kg | 3.3 | 330 kcal | 1,381 kJ |
Trade shifts range from a quick call-out to a full day on the tools. Here body weight is fixed at 80 kg while shift length and task tier both change, so you can compare how a longer shift and a heavier task each add to the total.
| Shift Length | Electrical (MET 3.3) | Masonry Light (MET 2.5) | Masonry Moderate (MET 4.3) | Plumbing (MET 3.0) |
|---|---|---|---|---|
| 30 minutes | 132 kcal / 552 kJ | 100 kcal / 418 kJ | 172 kcal / 720 kJ | 120 kcal / 502 kJ |
| 60 minutes | 264 kcal / 1,105 kJ | 200 kcal / 837 kJ | 344 kcal / 1,439 kJ | 240 kcal / 1,004 kJ |
| 90 minutes | 396 kcal / 1,657 kJ | 300 kcal / 1,255 kJ | 516 kcal / 2,159 kJ | 360 kcal / 1,506 kJ |
| 120 minutes | 528 kcal / 2,209 kJ | 400 kcal / 1,674 kJ | 688 kcal / 2,879 kJ | 480 kcal / 2,008 kJ |
Australian nutrition panels list energy in kilojoules, not calories, so it's worth converting your shift total into the same unit your food packaging uses. Multiply your calorie figure by 4.184 to get kilojoules. An 80 kg tradesperson doing moderate-effort masonry work for a 60-minute stretch burns about 344 kcal, which is roughly 1,439 kJ — a useful figure to weigh up against the energy value of a lunch break meal or recovery snack after a heavy stretch of laying block.
How many calories does skilled trades work burn?
It depends on the task and how long you work. Using this calculator's four tiers for an 80 kg tradesperson over a 60-minute shift: electrical work, wiring/tapping/splicing (MET 3.3) burns about 264 kcal (1,105 kJ), masonry/concrete at light effort (MET 2.5) burns about 200 kcal (837 kJ), masonry/concrete at moderate effort (MET 4.3) burns about 344 kcal (1,439 kJ), and plumbing activities (MET 3.0) burns about 240 kcal (1,004 kJ). Enter your own weight, task tier, and shift length above for a personalised estimate.
How is calories burned skilled trades work calculated?
The calculator multiplies a MET (Metabolic Equivalent of Task) value for your chosen trade tier by your body weight in kilograms and your shift duration in hours: calories = MET × body weight (kg) × duration (hours). Because most shifts are tracked in minutes or hours rather than a single round number, the calculator takes your minutes input and divides by 60 before running the formula. The four MET values used — 3.3 for electrical work, wiring/tapping/splicing (code 11130), 2.5 for masonry/concrete at light effort (code 11482), 4.3 for masonry/concrete at moderate effort (code 11480), and 3.0 for plumbing activities (code 11516) — come directly from the Occupation section of the 2024 Adult Compendium of Physical Activities. The kilocalorie result is then multiplied by 4.184 to give the equivalent figure in kilojoules, the unit used on Australian food labels.
Why is the plumbing value an estimate while electrical work and masonry are not?
Of the four MET values used on this page, only one is flagged in the 2024 Adult Compendium of Physical Activities as an estimated figure rather than a value confirmed by dedicated published research: plumbing activities (MET 3.0, code 11516). The other three tiers — electrical work, wiring/tapping/splicing (MET 3.3, code 11130), masonry/concrete at light effort (MET 2.5, code 11482), and masonry/concrete at moderate effort (MET 4.3, code 11480) — are not flagged as estimated; all three are literature-supported figures. We disclose this distinction plainly rather than presenting all four numbers as if they carried identical levels of evidence, so treat the plumbing result as a reasonable planning estimate and the other three as more evidence-backed figures.
What's the difference between masonry light effort and masonry moderate effort?
Both tiers cover masonry and concrete work, but they're graded by overall physical intensity rather than by a specific task. Light effort (MET 2.5) suits steadier work such as mixing small batches, pointing, or laying block at an unhurried pace. Moderate effort (MET 4.3) reflects sustained lifting, carrying and positioning of block, brick and mixed concrete at a working pace, and burns close to 70% more per hour than the light-effort tier at the same body weight. Choose whichever tier better matches the pace and load of your actual work, rather than the specific material you're handling.
Does body weight affect the result?
Yes. Because calories equal MET multiplied by body weight in kilograms multiplied by duration in hours, body weight is a direct multiplier in the formula. At the electrical work tier (MET 3.3) for a 60-minute shift, a 100 kg tradesperson burns roughly 330 kcal compared with about 198 kcal for a 60 kg tradesperson completing the identical shift on the identical task.
What are the limitations of this calorie estimate?
This calculator uses published MET values multiplied by your body weight and shift duration, which gives a solid population-level estimate rather than a personalised measurement. It doesn't account for how much of a shift was spent on heavy lifting versus lighter fine-motor work, ladder or scaffold use, job site layout, tool choice, your pace, or your individual working efficiency. The plumbing tier in particular is a Compendium-flagged estimate rather than a value confirmed by dedicated published research, so treat that figure as a reasonable planning number rather than a precise measurement. Treat all results as reliable planning figures for time spent on a given task, not exact physiological measurements.
How does this differ from the site's Construction Work and Carpentry/Woodworking calculators?
This page is built specifically on the Occupation-section trade codes for electrical work, masonry/concrete, and plumbing in the 2024 Adult Compendium of Physical Activities. Our separate Construction Work Calorie Calculator instead covers general construction labouring tasks, and our Carpentry/Woodworking Calorie Calculator covers workshop bench work, structural house carpentry and fence building using Home Repair-section codes. If your work is specifically electrical, plumbing, or masonry-related, this page's codes are the closer match; for general construction labouring or carpentry-specific tasks, use those calculators instead.
Is skilled trades work a good source of daily physical activity?
Yes, particularly for moderate-effort masonry work. A MET of 4.3 for moderate-effort masonry sits in the moderate-to-vigorous intensity range, comparable to a solid walk or light cardio session, once lifting, carrying and sustained standing effort are factored in. Electrical work, light-effort masonry and plumbing (MET 2.5 to 3.3) sit closer to light-to-moderate intensity. A full day on the tools can be a genuine contributor to weekly physical activity totals, on top of being productive, skilled work.