Calories Burned Martial arts at 85 kg — 876 kcal per Hour
Martial arts at 85 kg (176-198 lb) burns about 876 kcal per hour. That figure comes from the activity's MET value of 10.3 in the 2011 Compendium of Physical Activities, multiplied by body weight: 10.3 × 85 kg × 1 hour = 876 kcal. This page works the numbers out in full — for 15, 30, 45, 60 and 90 minutes, across all four weight bands, and against four comparable activities at the same weight — so you can plan sessions with real figures instead of guessing.
Martial arts on this page covers the striking and grappling disciplines grouped together in the Compendium — judo, jujitsu, karate and tae kwon do — which share a single MET value of 10.3. That grouping is honest about the evidence: the Compendium measures the energy cost of a hard training session, and across these arts a hard session looks similar — bursts of explosive movement, constant footwork, and repeated striking or throwing against resistance.
At 10.3 METs this is one of the highest-burning activities on the site. At 85 kg it means 876 kcal per hour — more than running at 6 mph and roughly four times a Pilates session of the same length. But the figure describes a hard training session, not a gentle grading or a forms-only evening, and beginners should expect their first months to feel very different from the number on this page.
Calculate your own numbers
Use the Calorie calculator to work out your own burn for martial arts at your exact weight and session length. Enter your weight, pick the activity and set the duration, and the tool applies the same MET formula shown below. You can also try the running calorie calculator to see how this session fits into your total daily energy use.
Related pages in this section:
The formula, shown and cited
The standard way to estimate the energy cost of an activity is the MET formula from the Compendium of Physical Activities (Ainsworth et al., Medicine & Science in Sports & Exercise, 2011; 43(8): 1575–1581):
Calories (kcal) = MET × body weight (kg) × duration (hours)
One MET is the energy you use sitting quietly at rest — about 1 kcal per kilogram of body weight per hour. An activity rated at 10.3 METs therefore uses 10.3 times as much energy as resting. The Compendium's MET values come from published studies that measured oxygen use during each activity, so they are measured averages, not guesses. The value used here is the one recorded for this activity in the FitCalc activity data, taken from the Compendium.
Worked through for this page:
- MET for martial arts: 10.3
- Body weight: 85 kg (the midpoint of the 80-90 kg band, 176-198 lb)
- Duration: 1 hour
- Calculation: 10.3 × 85 × 1 = 876 kcal
For a 30-minute session the same calculation is 10.3 × 85 × 0.5 = 438 kcal. Nothing else is hidden in the maths — if your weight or duration changes, only those two numbers change.
Your numbers at 85 kg
| Duration | Calculation | Calories burned |
|---|---|---|
| 15 minutes | 10.3 × 85 × 0.25 | 219 kcal |
| 30 minutes | 10.3 × 85 × 0.5 | 438 kcal |
| 45 minutes | 10.3 × 85 × 0.75 | 657 kcal |
| 60 minutes | 10.3 × 85 × 1 | 876 kcal |
| 90 minutes | 10.3 × 85 × 1.5 | 1313 kcal |
That is about 14.6 kcal per minute of martial arts at this weight. A short session still counts: even 15 minutes burns 219 kcal, and three 15-minute sessions across a day add up to the same 657 kcal as one 45-minute session.
How the burn changes with body weight
The MET value stays the same — it describes the activity, not the person — but the calorie total scales with weight, because a heavier body costs more energy to move:
| Body weight | Calories per hour | Calories per 30 minutes |
|---|---|---|
| 55 kg | 566 kcal | 283 kcal |
| 65 kg | 670 kcal | 335 kcal |
| 75 kg | 772 kcal | 386 kcal |
| 85 kg | 876 kcal | 438 kcal |
Two people doing the same activity for the same time can therefore burn quite different amounts, and that is expected — it is physics, not a mistake in the formula. If your weight sits between two rows, your figure sits between the two values.
How martial arts compares
Here is martial arts against four other activities at the same 85 kg, all using the same MET formula:
| Activity | MET | Calories per hour at 85 kg |
|---|---|---|
| Martial arts | 10.3 | 876 kcal |
| Judo | 10.3 | 876 kcal |
| Boxing | 12.8 | 1088 kcal |
| Swimming breaststroke | 10.3 | 876 kcal |
| Jumping rope at a moderate pace | 10.0 | 850 kcal |
Use this table to choose, not to judge. A higher number means a harder session, not a better one: the activity you enjoy and repeat three times a week beats the activity that burns more per hour but that you quit after a fortnight. Mixing intensities across the week — one harder session, two easier ones — is usually more sustainable than doing the hardest activity every time.
Fitting martial arts into your week
| Sessions per week | 30 minutes each | 60 minutes each |
|---|---|---|
| 2 sessions | 876 kcal | 1752 kcal |
| 3 sessions | 1314 kcal | 2628 kcal |
| 5 sessions | 2190 kcal | 4380 kcal |
A typical martial arts class lasts 60 to 90 minutes: warm-up, technique drills, forms (kata) or pad work, and often sparring at the end. At 10.3 METs, martial arts counts as vigorous activity, so it contributes directly towards the widely used target of 150 minutes of moderate activity a week for adults. To burn 500 kcal from martial arts alone takes about 34 minutes at 85 kg, and 1,000 kcal takes about 68 minutes — spread across the week, that is far more realistic than trying to do it in one session. Build up gradually — add 10% to your weekly total at most, and keep at least one rest day.
How to use the result
What changes the burn for martial arts in practice:
- Sparring versus forms: live sparring is the most intense part of any class, while slow kata practice can sit well below the 10.3 average.
- The art itself: taekwondo's kicking volume and judo's throwing both cost more than a forms-heavy karate session.
- Your belt level: beginners spend more energy on inefficient movement, while advanced students move economically but train at higher intensity.
- Class structure: a class that is mostly pad work and conditioning burns far more than one that is mostly demonstration and discussion.
Practical tips for this activity:
- Choose the art by what you enjoy, not by the calorie figure — you will train for years in an art you love and quit in weeks in one you do not.
- Learn to fall safely (breakfalls) before anything else in a grappling art; it is the single most useful skill in the room.
- Bring water and expect to sweat heavily: at 10.3 METs a 90-minute class at 85 kg burns roughly 1313 kcal, which is a serious workout.
- Do not spar hard in your first months — conditioning, technique and control come first, and injuries come from skipping that order.
Use the numbers on this page to set realistic expectations rather than to chase a daily total. If you are tracking food as well, add the session's calories to your total daily energy expenditure for that day, and remember that the figure is an estimate with roughly 10–20% uncertainty. Do not eat back every calorie the calculator shows: activity trackers and MET estimates both tend to overstate slightly, and a small margin keeps a weight-loss plan on track. If you are aiming to lose weight, keep the deficit modest — 300–500 kcal a day is a common, sustainable range — and keep your total intake above the safety floors of 1,200 kcal a day for women and 1,500 kcal a day for men unless a healthcare professional advises otherwise.
A note at 85 kg
At 85 kg you sit in the heaviest weight band on this site, and your hour costs the most of any band — 876 kcal, against 566 kcal at 55 kg for the same activity and the same duration. That is the largest absolute return on the site, and it is a real advantage if you are using activity to support weight loss. It comes with the clearest trade-off of any band, though: the load on knees, ankles, hips and the lower back is also the highest, and it rises fastest in activities with impact, jumping or rapid direction changes. Start with shorter sessions — 30 minutes rather than 60 — and add time in ten-minute steps over several weeks, keep at least one rest day between hard sessions, and choose lower-impact versions of the activity while your fitness builds. Good footwear is not optional at this weight. The burn is the highest on the page, but the sustainable routine is the one that keeps you moving next month, not the one that burns the most this week.
What the number does NOT tell you
The MET formula is honest about what it measures and silent about the rest. It does not account for your fitness level: a fit person burns fewer calories doing the same activity than an unfit person, because their body is more efficient. It does not account for body composition — two people at 85 kg with different amounts of muscle and fat will burn slightly different amounts. It does not include the afterburn (excess post-exercise oxygen consumption) that follows hard sessions, it does not measure strength, flexibility or balance gained, and it says nothing about how the activity affects your appetite, sleep or mood. The 10.3 MET figure groups four different arts into one number, so it is rougher than most values here: a gentle kata session and a full-contact sparring session are not the same activity. The estimate also ignores the injury risk, which is real in any contact art, and it says nothing about skill, discipline or confidence — the reasons most people train. If you have a joint, heart or neurological condition, talk to a healthcare professional before starting a contact art, and tell the instructor on day one. Use the calorie figure as a planning estimate, and judge the activity by how you feel doing it and whether you keep doing it.
Frequently asked questions
How many calories do I burn doing martial arts for 30 minutes at 85 kg?
About 438 kcal. The maths is 10.3 METs × 85 kg × 0.5 hours = 438 kcal. That is an estimate from the Compendium average — your real burn depends on your fitness, your pace and the conditions. If you weigh more or less than 85 kg, use the weight table above to read your own figure.
Is martial arts good for weight loss?
It can help, but only as part of an overall calorie deficit. At 85 kg, an hour of martial arts burns about 876 kcal, which is a useful contribution — roughly the energy in a modest meal — but weight loss still comes from the total balance of food and activity across the week, not from one session. Aim for a gradual loss of 0.5–1% of body weight per week, and never drop below 1,200 kcal a day (women) or 1,500 kcal a day (men) without medical supervision.
How does martial arts compare with judo?
At 85 kg, martial arts burns about 876 kcal per hour against 876 kcal for judo. If the number is higher, martial arts is the more intense activity; if it is lower, judo burns more. The best choice is usually the one you will actually do several times a week — consistency matters more than a small difference in the hourly rate.
Does the calorie burn change if I weigh more or less than 85 kg?
Yes, directly. Calories = MET × weight in kg × hours, so the burn scales with body weight. At 85 kg the same hour of martial arts burns about 876 kcal; at 85 kg it burns about 876 kcal. The MET value itself does not change with weight — it describes the intensity of the activity.
Which martial art burns the most calories?
The Compendium does not separate them: judo, jujitsu, karate and tae kwon do share a single value of 10.3 METs, so FitCalc gives them all the same figure — 876 kcal per hour at 85 kg. In practice a sparring-heavy judo or taekwondo session probably burns more than a forms-heavy karate session, but the published data does not support ranking them, so this page does not invent a ranking.
Estimates only, not medical advice. Minimum safe intakes: 1,200 kcal/day women, 1,500 kcal/day men — consult a healthcare professional before a very-low-calorie diet.