Swimming calorie burn by intensity
Estimates use the formula kcal = MET × weight (kg) × hours, with MET values from the 2011 Compendium of Physical Activities. Figures are gross burn — they include the calories you would have burned at rest.
| Intensity | MET | kcal / 30 min* | kcal / 60 min* |
|---|---|---|---|
| Leisure swimming | 5.8 | 203 | 406 |
| Freestyle, moderate effort | 8.3 | 290 | 581 |
| Freestyle, vigorous effort | 9.8 | 343 | 686 |
| Butterfly | 13.8 | 483 | 966 |
*For a 70 kg (154 lb) person. Use the calculator above for your own weight.
Burn by body weight
At a typical intensity for swimming (8.3 METs), here's how the burn scales with body weight:
| Body weight | 15 min | 30 min | 60 min |
|---|---|---|---|
| 55 kg (121 lb) | 114 | 228 | 457 |
| 70 kg (154 lb) | 145 | 290 | 581 |
| 85 kg (187 lb) | 176 | 353 | 706 |
| 100 kg (220 lb) | 208 | 415 | 830 |
Getting more from swimming
- Stroke choice matters enormously — butterfly costs more than double leisure swimming.
- Use intervals (e.g., 10 × 50 m with short rests) to keep intensity honest; continuous easy laps drift lazy.
- Swimming famously stimulates appetite — watch the post-pool snack if fat loss is the goal.
Want the bigger picture? Your workout is one slice of total daily burn — estimate the whole thing with the TDEE calculator, or compare against 25+ other activities in the calories burned calculator.
More activities
- 🚶 Walking
- 🏃 Running
- 🐢 Jogging
- 🚴 Cycling
- 🏋️ Weightlifting
- 🪢 Jumping Rope
- 🥾 Hiking
- 🧘 Yoga
- 🤸 Pilates
- 🚣 Rowing
- ⚙️ Elliptical
- 🪜 Stair Climbing
- 💃 Dancing
- 🏀 Basketball
- ⚽ Soccer (Football)
- 🎾 Tennis
- ⛳ Golf
- 🔥 HIIT Workouts
- 🥊 Boxing
- 🛶 Kayaking
- 🌱 Gardening
- 🧹 Housework & Cleaning
- 🧍 Standing
- 😴 Sleeping
- 🏸 Badminton
Sources
- Ainsworth BE, Haskell WL, Herrmann SD, et al. 2011 Compendium of Physical Activities: a second update of codes and MET values. Med Sci Sports Exerc. 2011. [link]
Frequently asked questions
Why am I not losing weight from swimming?
Swimming reliably increases hunger, and pool sessions are easy to do at low intensity. Track intake and add structured intervals before blaming the sport.
Which stroke burns the most calories?
Butterfly tops the chart, followed by fast freestyle and breaststroke. But the stroke you can sustain for 30+ minutes beats the one that exhausts you in two laps.