Calories Burned Biking Calculator
Result
Calories burned
- Calories per hour
- 588 kcal
- Calories per minute
- 9.8 kcal
- Energy
- 2,460 kJ
A calories burned biking calculator turns three inputs — weight, ride time, effort — into the energy that ride cost. Its MET values come from the 2024 Adult Compendium of Physical Activities, so the intensity list gives real speeds (12 – 19 mph) rather than words like "moderate" that mean something different to everyone. That matters: a stationary bike at a comfortable pace is not the same row as a spin class, and the two are 32% apart. The answer comes in kilojoules too, because food labels in most of the world print the first one.
Calories burned per hour by cycling intensity
| Intensity | Speed or setting | MET | kcal per hour at 70 kg |
|---|---|---|---|
| Easy pace, self-selected speed | Self-selected, easy | 4.3 | 316 |
| Stationary bike, general | Indoors, no distance | 6.8 | 500 |
| 12 – 13.9 mph, leisure, moderate effort | 12 – 13.9 mph | 8 | 588 |
| Mountain biking, general | Off-road, any speed | 8.5 | 625 |
| 14 – 15.9 mph, fast, vigorous effort | 14 – 15.9 mph | 10 | 735 |
| 16 – 19 mph, racing, very fast | 16 – 19 mph | 12 | 882 |
| Over 20 mph, racing, sprinting | Over 20 mph | 16.8 | 1235 |
The calorie column is for a 70 kg rider and scales in a straight line with body weight: at 85 kg every figure is 21% higher, at 55 kg 21% lower. MET values are population averages from the 2024 Adult Compendium of Physical Activities and are the same list the drop-down uses, so a band that reads high here reads high there too. Two of the seven bands — easy pace and stationary — have no speed, because the Compendium entry has none.
Formula
kcal = MET × 3.5 × body weight (kg) ÷ 200 × minutes
- MET
- Metabolic equivalent of the intensity band you picked
- w
- Body weight in kilograms
- t
- Time ridden, in minutes
Use it to put a number on a ride you have already done, or to compare two ways of covering the same route. It answers "how much did that cost me", not "how fit am I" — for the second question you want a power meter. If what you actually want is how many calories you may eat today, the ride is one input among several and the total daily energy page is the better starting point.
Worked examples
A 70 kg rider at 12 – 13.9 mph for one hour
- Per minute: 8.0 × 3.5 × 70 ÷ 200 = 9.8 kcal
- Over the hour: 9.8 × 60 = 588 kcal
- Per hour is 9.8 × 60 as well, so it matches the total while the ride lasts exactly 60 minutes
- In kilojoules: 588 × 4.184 = 2,460 kJ
The mental shortcut MET × kg × hours gives 560, which is 5% under. The gap is the 3.5 ÷ 200 × 60 in the full formula working out to 1.05 rather than 1 — small enough to use in your head, big enough to notice over a season.
The same rider and the same hour at racing sprint pace
- Per minute: 16.8 × 3.5 × 70 ÷ 200 = 20.58 kcal
- Over the hour: 20.58 × 60 = 1,234.8, which rounds to 1,235 kcal
- In kilojoules: 1,234.8 × 4.184 = 5,166 kJ
Nothing changed except the band, and the figure went up 2.1 times. There is no sane number of hours on the easy setting that reaches 1,235 kcal — which is why the drop-down matters more than the duration box.
Limitations
The figure is an estimate built on a population average. Each MET value is the oxygen cost measured across a group of riders doing that activity, and two people inside the same band can sit 15% either side of it. The formula also assumes you held that intensity for the whole ride: coasting, traffic lights and long descents count as time at the band you picked unless you shorten the duration to the part where you were working. Fitness watches read high; drafting lowers the real cost.
Frequently asked questions
- How are calories burned cycling calculated?
- Calories per minute = MET × 3.5 × body weight in kg ÷ 200. At 8.0 MET and 70 kg that is 9.8 kcal a minute, so an hour comes to 588 kcal. The MET is the one number you choose rather than measure: the multiple of resting metabolism at which the activity is performed. The Compendium publishes one for each activity and speed.
- Why does the calculator also give the answer in kilojoules?
- Most food labels outside the United States print energy in kilojoules, while exercise is discussed in kilocalories — the two numbers meet at the same meal. The conversion is exact and fixed: 1 kcal = 4.184 kJ, so 588 kcal is 2,460 kJ. A label that says 1,050 kJ is 251 kcal.
- Which band should I choose if I ride a stationary bike?
- The stationary bike row, at 6.8 MET — not the spin class row, which is 9.0 and 32% higher. Stationary riding at a self-chosen pace is a genuinely lighter activity than a class where an instructor sets the tempo, and the two are separate entries in the Compendium for that reason.
- How accurate is a MET-based estimate?
- Within about 15% for a group, and less than that for one person on a good day. The MET is an average across the people who were measured, and the formula assumes the whole ride sat at that intensity. Treat the answer as a centre point: 588 kcal means something between roughly 500 and 680, and pretending to two decimal places would be false precision.
- Do heavier riders burn more calories for the same ride?
- Yes, in a straight line. The formula multiplies by body weight, so an 85 kg rider burns 21% more than a 70 kg rider at the same speed and duration, and a 55 kg rider 21% less. What it does not account for is that a fitter rider at the same weight often uses less energy for the same speed.
References
- 2024 Adult Compendium of Physical Activities — Adult Compendium of Physical Activities
- ACSM metabolic calculations (course handout) — Texas Tech University, Department of Kinesiology and Sport Management
- NIST Special Publication 811: Guide for the Use of the International System of Units (SI) — National Institute of Standards and Technology