How this cycling calorie calculator works
The estimate uses MET values for cycling from the Compendium of Physical Activities (Ainsworth et al.), which rates each effort level by how much energy it costs relative to sitting still. A leisurely ride under 16 km/h sits near 4 MET, a moderate 19 to 22 km/h effort near 8 MET, and racing above 25 km/h near 12 MET. Calories per minute follow the standard ACSM relationship:
- Calories per minute ≈ MET × 3.5 × body weight (kg) ÷ 200
A 77 kg (170 lb) rider at a moderate 8 MET burns about 320 calories in 30 minutes. Push to a vigorous 10 MET and the same half hour rises toward 400. Your weight and your effort set the total, and the calculator shows the per-minute rate next to it.
Why outdoor cycling varies so much
Speed is a rough guide to effort on a bike, not a reliable one. At road pace most of your energy goes into pushing air aside, so a headwind, a hill, or tucking into a group can swing the real burn far above or below a speed-based estimate. Two riders holding the same 25 km/h can differ by a wide margin depending on wind and drafting. A stationary bike removes most of that noise, which is why an indoor number is usually steadier than an outdoor one.
Cycling next to other cardio
Cycling is low impact and easy to sustain, which makes it a good high-volume option next to running or the treadmill. For a run measured by distance, the running calorie calculator is the right tool, and the treadmill calorie calculator handles speed and incline indoors. To compare across many activities on the same MET basis, the calories burned calculator covers the full list.
Cycling for weight loss
Riding builds fitness and adds to a deficit, but the arithmetic still favours the kitchen. A pound of fat is roughly 3,500 calories, or several hours of moderate riding, so diet moves the number faster than the pedals. Set a sensible target with the calorie calculator, let rides top up the deficit rather than carry it, and be honest about the appetite a long ride creates.
