How BurnMeter Calculates Calories
Understanding the science behind our swimming and activity comparisons using scientifically-backed metabolic equivalents

What are METs?

MET stands for Metabolic Equivalent of Task. It's a standardized way to measure the energy cost of physical activities. One MET equals the energy you burn at rest (about 1 calorie per kilogram of body weight per hour).

Example: If an activity has a MET value of 7, it means you're burning 7 times more energy than when at rest.

Our Calculation Formula

Calories per minute = (METs × 3.5 × Weight (kg)) / 200

This formula is based on research from the American College of Sports Medicine and is widely used in fitness and health applications.

MET Values Reference
The metabolic costs we use for different activities and intensities

Swimming Strokes

freestyle
easy
5.8 METs
moderate
7 METs
hard
10 METs
breaststroke
easy
5.3 METs
moderate
6.8 METs
hard
9.5 METs
backstroke
easy
4.8 METs
moderate
6.2 METs
hard
8.3 METs
butterfly
easy
8 METs
moderate
11 METs
hard
13.8 METs

Other Activities

Badminton
easy
4.5 METs
moderate
5.5 METs
hard
7 METs
Basketball
easy
4.3 METs
moderate
6.5 METs
hard
8 METs
Boxing
easy
6 METs
moderate
9 METs
hard
12.8 METs
Cycling
easy
4 METs
moderate
8 METs
hard
12 METs
Data Sources & Accuracy

Our MET values are based on the 2011 Compendium of Physical Activities by Ainsworth et al., which is the gold standard reference for metabolic costs of physical activities.

Swimming-specific values have been cross-referenced with research from competitive swimming organizations and sports science literature to ensure accuracy across different skill levels.

Important Note:

Individual calorie burn can vary based on factors like swimming technique, body composition, water temperature, and fitness level. These calculations provide estimates based on average metabolic costs.