Most online calculators give you one confident number. Real calorie burn varies by body weight, effort and what the class actually contains, so this tool gives a range and shows its assumptions.
Optional: add age, sex and height for a daily-needs comparison
How It Works
Calories per minute = (MET × 3.5 × body weight in kg) ÷ 200, multiplied by minutes trained. MET values come from the Compendium of Physical Activities, the reference researchers use. We use these entries: martial arts, slower pace, novice practice (5.3); kickboxing (7.3); boxing sparring (7.8); and martial arts, moderate pace, including judo, jujitsu and Muay Thai (10.3).
- Technique-focused class: 5.3 to 7.3 MET for the whole session.
- Typical class: 25% warm-up at 5.3, 58% technique at 5.3 to 7.3, and 17% conditioning at 7.8 to 10.3. That is roughly 15, 35 and 10 minutes of an hour.
- Live sparring or rolling class: 7.8 to 10.3 MET.
The optional daily-needs figure uses the Mifflin-St Jeor equation for resting energy use, which is the standard estimate for adults.
What This Calculator Can't Know
MET values are group averages. Your fitness, technique efficiency, rest between rounds and the room's pace all move the real number. Wearables are also only estimates. Treat the range as a planning guide, and know that fat loss depends on your total calorie balance over weeks, not one class. This is general information, not medical advice. If you have a medical condition, check with a doctor before changing your training or diet.
Want the full reasoning? Read how many calories MMA actually burns and MMA vs gym for fat loss.
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Quick answers
For a 70 kg adult, a typical one-hour class with warm-up, technique and a short conditioning finish lands at roughly 420 to 540 calories on this calculator. Classes with live sparring or rolling run higher, and technique-only classes run lower.
It is an estimate. It uses published MET values, which are group averages, so your own burn can differ with fitness, effort and rest between rounds. Use the range as a planning guide, not a precise measurement.
Per hour, a well-run class may burn somewhat more than a typical lifting session, but the gap is modest. Fat loss depends on your overall calorie balance and on how consistently you train.
No. A second class adds real calories, but most people cannot sustain first-hour intensity into the second, so the extra burn is smaller.
Values from the Compendium of Physical Activities: martial arts at novice pace 5.3, kickboxing 7.3, boxing sparring 7.8, and martial arts at moderate pace 10.3.