Biking Calorie Calculator
Estimate calories burned on a bike ride from your weight (lb or kg), minutes ridden, and effort — from an easy cruise under 10 mph to a 20+ mph race pace, plus mountain and stationary options.
Example: with Your weight 170 · Weight unit lb (pounds) · Pace / effort Moderate, 12-13.9 mph (8.0 METs) · Ride time (minutes) 30 → Calories burned: 324 kcal.
- Burn rate at this effort648 kcal/hour (10.8/min)
- Rides like this ≈ 1 lb of fat10.8 rides (3,500 kcal per lb)
Computed by the calculator below using its default values. Change any input to see your own numbers.
kcal/min = MET × 3.5 × weight (kg) ÷ 200. MET values from the 2011 Compendium of Physical Activities.
What actually drives the burn on a bike
Cycling calories scale with two things you control on the page: body weight and intensity. The calculator uses MET values — multiples of resting metabolism — from the 2011 Compendium of Physical Activities, the standard reference researchers use. An easy cruise under 10 mph is 4 METs, roughly quadruple sitting still; a 20+ mph paceline effort is 15.8 METs, in the same league as fast running.
Speed is an imperfect proxy for effort outdoors: wind resistance grows with the cube of speed, hills and drafting change everything, and a knobby-tired mountain bike at 10 mph can cost more than a road bike at 14. Pick the row that matches how hard you are working, not just what the speedometer says.
How it’s calculated
kcal/min = MET × 3.5 × body weight (kg) ÷ 200, the standard MET formula (3.5 mL O2/kg/min resting uptake, ≈5 kcal per liter of oxygen). MET values, 2011 Compendium of Physical Activities: leisure <10 mph 4.0; 10-11.9 mph 6.8; 12-13.9 mph 8.0; 14-15.9 mph 10.0; 16-19 mph 12.0; 20+ mph racing 15.8; mountain biking 8.5; stationary, general 7.0. 1 lb = 0.45359237 kg; pound-of-fat line uses 3,500 kcal.
METs assume an average-efficiency rider on flat ground — wind, hills, drafting, bike type, and individual metabolism (roughly ±10%) all shift the true number, so treat this as an educational estimate, not medical advice.
Cycling METs and a 30-minute ride at 170 lb
| Effort | METs | kcal / 30 min |
|---|---|---|
| Leisure, under 10 mph | 4.0 | ≈ 162 |
| Light, 10-11.9 mph | 6.8 | ≈ 275 |
| Moderate, 12-13.9 mph | 8.0 | ≈ 324 |
| Vigorous, 14-15.9 mph | 10.0 | ≈ 405 |
| Fast, 16-19 mph | 12.0 | ≈ 486 |
| Racing, 20+ mph | 15.8 | ≈ 640 |
| Mountain biking | 8.5 | ≈ 344 |
| Stationary, general | 7.0 | ≈ 283 |
MET values: 2011 Compendium of Physical Activities. Calories computed with kcal/min = MET × 3.5 × 77.1 kg ÷ 200 for 30 minutes; rounded.
Common mistakes
- Using average speed from a hilly or stop-and-go ride — coasting downhill and waiting at lights inflate the MET row you pick.
- Entering kilograms while the unit is set to pounds, which cuts the estimate by more than half.
- Trusting the number to the calorie: MET tables carry real uncertainty, so treat results as a band, not a receipt.
- Eating back the whole burn after every ride and wondering why the scale will not move.
Frequently asked questions
What formula does this biking calculator use?
kcal per minute = MET × 3.5 × your weight in kg ÷ 200, with cycling METs from the 2011 Compendium of Physical Activities (4.0 for easy cruising up to 15.8 for 20+ mph racing). A 170 lb rider at 12-13.9 mph burns about 10.8 kcal/min, or 324 kcal in 30 minutes.
How many calories does biking 10 miles burn?
Depends on how fast you cover them. At a moderate 13 mph, 10 miles takes about 46 minutes and burns roughly 500 kcal for a 170 lb rider. Slower riding burns less per minute but takes longer, so the per-mile total lands in a similar 40-55 kcal/mile band.
Does a stationary bike burn fewer calories than riding outside?
Usually a little, at the same perceived effort — no wind resistance or bike handling. The Compendium rates general stationary cycling at 7.0 METs versus 8.0 for a 12-13.9 mph road ride; interval or erg-mode sessions can match or exceed outdoor numbers.
Is the calorie estimate accurate enough to plan weight loss?
It is a good planning band, typically within 10-20% for steady riding. Individual efficiency, terrain, and drafting move the true figure, so anchor plans to multi-week weight trends rather than any single workout's number.
Can I use exercise calories to treat a medical condition?
Use this for fitness planning only. If you are managing diabetes, heart disease, or significant weight issues, build exercise and calorie targets with your physician or a cardiac-rehab professional.