How Many Calories Does the Assault Bike Burn Every Minute?

The Assault Bike burns between 6 and 26 calories per minute, depending on how fast you pedal. The calculator above shows you the exact number for your output in real time. The explanation below will help you use that number to train more effectively.

The Assault Bike Only Has One Number That Matters: RPM

The Assault Bike (also called an air bike or fan bike) is different from a treadmill or stationary bike because it uses air resistance that gets harder and harder the more you work out. You can’t choose a level. The more you push, the more it pushes back.

This is why RPM is the most important number. Your revolutions per minute directly affect your watts, calories, and calorie-per-minute rate. When you raise your RPM by 10, your calorie burn doesn’t go up by 10%; it goes up by a lot because the relationship between fan speed and resistance follows a cubic curve.

The main point is that a small rise in sustained RPM leads to a much bigger rise in calorie output. It feels hard to go from 55 RPM to 65 RPM, but the calorie reward is big. That’s how air resistance works in your favor in an exponential way.

Reference chart for Assault Bike RPM to Calories Per Minute

Before your workout, use this table to set your pace goals. Click on any row in the calculator above to set your RPM right away.

The numbers are based on an average body weight of 70 to 80 kg. Use the calculator above to find your own rate.

How the Calculator Works: The Science Behind It

The Assault Bike monitor doesn’t show calories burned from a heart rate sensor or body weight input. It figures them out based on the mechanical power output, which is the actual watts you make when you use the pedals and handles. Here is the physics in simple terms:

• Step 1: Turn RPM into Watts: The resistance of a fan goes up with the speed of the fan. The bike’s algorithm uses a polynomial relationship ($Watts \approx 0.0022 \times RPM^{2.5}$) to turn your RPM into an estimated wattage.

• Step 2: Watts to Calories Per Minute: One watt is equal to 0.01433 kilocalories per minute. After taking into account metabolic efficiency (about 25% for human movement), the conversion gives you your calorie burn rate.

• Step 3: Adjusting for Body Weight: Athletes who are heavier need more energy to keep the same pedaling speed against air resistance. Our calculator uses a scaling factor to make up for this, so a 90 kg athlete and a 60 kg athlete see different calorie rates at the same RPM, which is what they should see.

For most athletes, this is more accurate than the display on the bike, which doesn’t take body weight into account at all.

How to Hit Your Calorie Goal Faster with an Assault Bike Pacing Strategy

Knowing your RPM-to-calorie rate changes how you work out on your bike. This is how to use it:

• For buy-ins and buy-outs of calories (like 15 cals): Know your sustainable RPM and how long it takes to get there. At 65 RPM (about 13 cal/min), it takes about 70 seconds to burn 15 calories. At 75 RPM (about 17 cal/min), it goes down to about 53 seconds. That 17-second difference adds up over the course of a full workout.

• For HIIT and EMOM work: Use the chart above to find the right RPM target for the number of calories you need to burn during your work interval. If your EMOM has 40 seconds of bike and you need 8 calories, you should keep your RPM at about 65.

• For longer conditioning pieces, keep your speed above 60 RPM. When you’re at less than 60 RPM, it can be mentally draining to see the calories pile up because the display barely moves. Plus, the watts drop off so quickly that you’re working just as hard for a lot fewer calories.

• Ghost calories are real: The flywheel on the Assault Bike keeps going. In the last 2–3 calories of a sprint, if you ease off a little while the fan spins down, you can save important seconds for your next move.

Calorie Comparison: Assault Bike, Rower, and Echo Bike

A common question at CrossFit gyms is whether the calories burned on an assault bike are the same as those burned on a rower.

No. People generally think that the Assault Bike burns more calories than the Concept2 rower because it works both the upper and lower body at the same time and doesn’t have a recovery phase in the stroke cycle. Many coaches use this rough conversion: 1 assault bike calorie is about 1.4 rower calories in terms of how hard it feels.

The Rogue Echo Bike has a different fan design, but it uses the same air-resistance system. When you ride the Echo Bike at the same RPMs as the Assault Bike, the calories you burn are usually a little lower. This means that if you’re used to the Assault, the Echo will feel a little harder to burn calories at the same rate.

Questions that are often asked

How many calories does the Assault Bike burn in a minute?

Most athletes burn 10 to 18 calories per minute when they keep going at 60 to 75 RPM. Elite-level sprints at speeds over 90 RPM can burn more than 24 calories per minute for short periods of time.

Is 100 RPM a good speed on the Assault Bike?

Yes, 100 RPM is a strong sprint output. Most people who play sports for fun keep their heart rate between 60 and 70 beats per minute during a workout. It takes a lot of training to be able to hold 100+ RPM for more than 15–20 seconds, and this is usually only done during max-effort sprint intervals.

Does the number of calories burned on an assault bike depend on how much you weigh?

The display on the bike doesn’t take into account body weight. Heavier athletes burn more calories at the same RPM because they have to push more weight against the same amount of air resistance. To give you a more accurate estimate, our calculator lets you change your body weight.

Why do calories from assault bikes seem so hard to get?

Because the relationship between RPM and calorie output is not linear; it is exponential. When you get tired and slow down even a little, your calorie rate drops quickly. The most important thing to do on the fan bike is to keep your RPMs up, not just “pedal hard.”

The results from the calculator are just guesses based on the physics of air resistance and the average metabolic efficiency. Individual results differ based on fitness level, bike calibration, altitude, and temperature. Use it as a guide for training, not as a medical test.