Calories Burned Swimming Calculator
Pool session energy burn by stroke and effort.
Enter your values
Enter the weight in kg.
Enter the duration in min.
Choose one of: Leisurely, Freestyle moderate, Freestyle fast, Breaststroke, Butterfly.
Results update instantly as you type — no submit needed. Your values are remembered on this device, and the shareable link reopens the calculator with exactly these numbers.
- Calories burned
- 448 kcal
- Per hour
- 598 kcal
- Per 100 m (at 2 min/100m)
- 20 kcal
- MET value used
- 8.3
Quick answer
Swimming burns 6-11 METs depending on stroke and effort — butterfly and fast freestyle are the highest.
kcal = MET x kg x hours
At a glance
| What it does | Pool session energy burn by stroke and effort. |
|---|---|
| Category | Fitness |
| Inputs needed | Weight, Duration, Stroke & effort |
| Main output | Calories burned |
| Formula | kcal = MET x kg x hours |
| Cost | Free — no sign-up, no download |
How to use the Calories Burned Swimming Calculator
- 1Enter your weight and the length of the session.
- 2Pick the stroke and effort level closest to your swim.
- 3Exclude long rest periods from the duration.
Inputs explained
- Weight(kg)
- Enter the weight in kg.
- Duration(min)
- Enter the duration in min.
- Stroke & effort
- Choose one of: Leisurely, Freestyle moderate, Freestyle fast, Breaststroke, Butterfly.
Worked example
Using the values the calculator loads with:
Inputs
- Weight72 kg
- Duration45 min
- Stroke & effortFreestyle moderate
Results
- Calories burned448 kcal
- Per hour598 kcal
- Per 100 m (at 2 min/100m)20 kcal
- MET value used8.3
Frequently asked questions
Why does swimming feel harder?
Water conducts heat 25x faster than air and adds drag, raising energy cost at any pace.
Does swimming make you hungry?
Cold water can increase appetite — plan post-swim nutrition deliberately.
What do I need to enter into the Calories Burned Swimming Calculator?
Just 3 values: weight, duration, stroke & effort. Every field starts with a realistic example, so you can change one number at a time and watch the result update instantly.
How does the Calories Burned Swimming Calculator work out the answer?
Swimming burns 6-11 METs depending on stroke and effort — butterfly and fast freestyle are the highest. It applies the formula kcal = MET x kg x hours and shows the working so you can check each step by hand.
Is the Calories Burned Swimming Calculator free, and do I need an account?
It is completely free with no sign-up, no download and no usage limit. Everything is calculated in your browser, so the numbers you type never leave your device.
Results are estimates for general information. For medical, legal, structural or financial decisions, confirm with a qualified professional.