Cycling is one of the most effective and joint-friendly ways to burn calories, but the honest answer to “how many” is: it depends. A 155 lb (70 kg) person burns roughly 145 calories in 30 minutes of easy cycling and around 370 in the same half hour ridden hard, and your own number shifts with your weight, your speed, the terrain, and the wind.
This guide gives you the real figures from the most widely cited scientific source on the energy cost of exercise, a full table you can read off by body weight and intensity, and a clear explanation of why the estimate varies and how to use it without fooling yourself.
The short answer
The amount of energy any activity costs is expressed in METs, or metabolic equivalents. One MET is the energy your body uses sitting quietly at rest, so an activity rated at 8 METs burns about eight times as much energy per minute as resting (CDC). Cycling spans a wide MET range depending on how hard you ride, which is why the calorie answer is a range rather than a single number.
Using standard MET values, here is the rough hourly burn for a 155 lb (70 kg) rider:
- Leisurely (under 10 mph): about 295 calories per hour
- Moderate (12 to 14 mph): about 590 calories per hour
- Vigorous (14 to 16 mph): about 735 calories per hour
- Racing (16 to 19 mph): about 880 calories per hour
A lighter person burns less and a heavier person more, because moving and supporting more body mass costs more energy. The table further down breaks this out by weight and time.
How the calorie math works
The calorie figures in this article are not guesses. They come from a simple, standard formula built on MET values:
Calories per minute = MET x 3.5 x body weight in kg / 200
To get the calories for a whole ride, multiply that by the number of minutes. For example, a 70 kg rider doing moderate cycling at 8.0 METs burns 8.0 x 3.5 x 70 / 200 = about 9.8 calories per minute, which is roughly 295 calories in 30 minutes or 590 in an hour.
The two inputs that move the number most are the ones you control and the one you do not: how hard you ride (the MET value) and how much you weigh (the kg in the formula). That is why the same ride burns noticeably more for a heavier rider, and why pushing the pace raises the burn faster than simply riding longer at an easy effort.
Cycling MET values, by intensity
The reference for the energy cost of physical activities is the 2011 Compendium of Physical Activities by Ainsworth and colleagues, published in Medicine and Science in Sports and Exercise. It catalogs hundreds of activities with measured or estimated MET values, and it is the source most calculators, apps, and health agencies draw on (Ainsworth et al., 2011).
Here are the Compendium’s MET values for common forms of cycling:
| Cycling activity | METs |
|---|---|
| Leisure, under 10 mph (commuting or for pleasure) | 4.0 |
| Bicycling, general | 7.5 |
| Leisure, 10 to 11.9 mph, light effort | 6.8 |
| Moderate, 12 to 13.9 mph | 8.0 |
| Vigorous, 14 to 15.9 mph (fast or racing) | 10.0 |
| Racing, 16 to 19 mph (not drafting) | 12.0 |
| Racing, over 20 mph | 15.8 |
| Mountain biking, general | 8.5 |
The CDC uses 10 mph as a simple dividing line: bicycling slower than 10 mph on level ground counts as moderate-intensity activity, and faster than 10 mph counts as vigorous (CDC). In MET terms, the CDC classes anything from 3.0 to 5.9 METs as moderate and 6.0 or more as vigorous, so most real riding above a gentle cruise lands in the vigorous band.
Calories burned cycling: full table
The table below applies the formula above to four body weights, five common intensities, and three durations. Figures are rounded to the nearest 5 calories. Find the row closest to your effort and the column closest to your weight.
30 minutes of cycling
| Intensity (MET) | 125 lb / 57 kg | 155 lb / 70 kg | 185 lb / 84 kg | 215 lb / 98 kg |
|---|---|---|---|---|
| Leisure, under 10 mph (4.0) | 120 | 145 | 175 | 205 |
| Stationary, moderate (7.0) | 210 | 255 | 310 | 360 |
| Moderate, 12 to 14 mph (8.0) | 240 | 295 | 355 | 410 |
| Vigorous, 14 to 16 mph (10.0) | 300 | 370 | 440 | 515 |
| Racing, 16 to 19 mph (12.0) | 360 | 440 | 530 | 615 |
45 minutes of cycling
| Intensity (MET) | 125 lb / 57 kg | 155 lb / 70 kg | 185 lb / 84 kg | 215 lb / 98 kg |
|---|---|---|---|---|
| Leisure, under 10 mph (4.0) | 180 | 220 | 265 | 310 |
| Stationary, moderate (7.0) | 315 | 385 | 465 | 540 |
| Moderate, 12 to 14 mph (8.0) | 360 | 440 | 530 | 615 |
| Vigorous, 14 to 16 mph (10.0) | 450 | 550 | 660 | 770 |
| Racing, 16 to 19 mph (12.0) | 540 | 660 | 795 | 925 |
60 minutes of cycling
| Intensity (MET) | 125 lb / 57 kg | 155 lb / 70 kg | 185 lb / 84 kg | 215 lb / 98 kg |
|---|---|---|---|---|
| Leisure, under 10 mph (4.0) | 240 | 295 | 355 | 410 |
| Stationary, moderate (7.0) | 420 | 515 | 615 | 720 |
| Moderate, 12 to 14 mph (8.0) | 480 | 590 | 705 | 825 |
| Vigorous, 14 to 16 mph (10.0) | 600 | 735 | 880 | 1,030 |
| Racing, 16 to 19 mph (12.0) | 720 | 880 | 1,060 | 1,235 |
These line up closely with the calories-burned figures published by Harvard Health Publishing, which lists similar values for cycling at each intensity (Harvard Health). Small differences between any two sources come from rounding and slightly different reference weights, not from one being right and the other wrong. For a personalized estimate that takes your exact weight and time, our calories burned calculator does the math for you.
Outdoor riding vs a stationary bike
A common question is whether the gym bike “counts” as much as riding outside. For calorie burn at the same effort, the two are very close. The Compendium rates general stationary cycling at about 7.0 METs, comparable to moderate outdoor riding, and a hard spin class can reach 8.5 METs or more (Ainsworth et al., 2011).
The practical differences are about consistency and measurement, not calories:
- Stationary bikes hold a steady load. There is no coasting downhill or stopping at lights, so the effort, and the burn, stay more even. Bikes with a power readout (watts) also give a far better calorie estimate than speed alone.
- Outdoor riding is more variable. Wind resistance, hills, road surface, and time spent freewheeling all swing the real energy cost up and down. A flat, sheltered route can feel easy while the same distance into a headwind is genuinely vigorous.
Neither is inherently better for burning calories. The one you will do regularly is the one that works, which is the same logic behind every form of exercise: consistency beats the perfect choice.
Why your real number will differ
It is worth being honest about the limits of any calorie estimate, because the numbers in apps and on bike computers often look more precise than they are.
- MET values are population averages. The Compendium figures describe a typical person, but individual energy cost varies with fitness, cycling economy, and body composition. Two riders of the same weight at the same speed can differ by 10 to 20 percent or more.
- Trackers estimate, they do not measure. A watch or bike computer infers calories from your weight, speed, and sometimes heart rate, then applies a formula. Only a power meter reading your actual watts gets close to a true measurement, and even that has a margin.
- Terrain and wind dominate outdoors. The same 30-minute ride can burn very different amounts depending on hills and headwind, none of which a simple speed-based estimate captures well.
The takeaway is not to ignore the numbers but to treat any single figure as a ballpark and to trust the trend over weeks rather than the readout from one ride.
Does cycling burn enough to lose weight?
Cycling is excellent for your heart, legs, and mood, and it can absolutely support fat loss, but it is easy to overrate its effect on the scale. Even an hour of vigorous riding burns roughly what is in a large muffin and a latte, and appetite tends to rise to partly replace what you burn. That is why exercise alone usually produces only modest weight loss, while a moderate diet adjustment does the heavy lifting. We unpack this directly in exercise vs diet for weight loss.
The smarter framing is to let cycling widen your calorie deficit and protect your fitness, not to try to outride your plate. A practical setup looks like this:
- Set a moderate calorie deficit through food, the engine of weight loss covered in what is a calorie deficit.
- Use cycling to add to that deficit and bank the cardiovascular benefits, treating the burned-calorie number as a bonus to view with skepticism rather than calories to “eat back.”
- Keep a realistic picture of your whole day, since your ride is only one slice of your total daily calorie burn.
The CDC makes the same point about sustainable weight loss: a gradual, steady pace built on consistent habits keeps weight off better than crash efforts (CDC).
Cycling vs running, briefly
Riders often wonder how cycling stacks up against running. Minute for minute, running at a typical pace carries a higher MET value than easy or moderate cycling, so a steady run usually edges out a steady ride for calories burned in the same time. But fast or hilly cycling closes the gap, and most people can comfortably ride far longer than they can run, which can even out total calories per session. Cycling is also far gentler on the knees and hips, making it easier to do often. If you are weighing the two, our companion guide on how many calories running burns lets you compare the exact figures side by side.
The bottom line
Cycling burns somewhere between roughly 250 and 700-plus calories an hour for most people, set mainly by how hard you ride and how much you weigh. The formula behind every figure here is straightforward: calories per minute = MET x 3.5 x your weight in kg / 200, with leisure riding around 4 METs, moderate riding at 8, and vigorous riding at 10 or more, all from the 2011 Compendium of Physical Activities.
Use the table to find your ballpark, remember that any single number is an estimate that can be off by 10 to 20 percent, and lean on cycling to support a diet-led calorie deficit rather than to erase one. To turn your intake side into something just as easy to track, CalcEat lets you snap a photo of your meal for a fast calorie and macro estimate, so you can see whether your eating matches the effort you are putting in on the bike. If you want a tailored target to ride toward, our free plan builds one around your numbers in a couple of minutes.
