Cycling Calorie Calculator

Q: Why are calories bracketed by speed?

Aerodynamic drag rises with the cube of speed, so cycling intensity (MET) jumps sharply at higher speeds rather than scaling linearly. The calculator uses standard speed-bracket MET values to capture this.

Q: Does this account for wind, hills, or drafting?

No - it is a flat-road, no-wind estimate. Climbing and headwinds raise expenditure substantially; drafting and descents lower it. A power meter is the only precise method. This estimate is for general guidance only - work with a qualified coach or sports medicine professional before pushing limits or recovering from injury.

Q: Is indoor cycling the same as road cycling?

Calorie burn is similar for matched effort, but stationary bikes lack coasting and air resistance, so steady indoor efforts can burn comparably or more per minute. Use the speed bracket that matches your perceived effort.

Frequently Asked Questions

How many calories does cycling burn per hour?

Roughly 400–1,000+ kcal/hour depending on speed and weight. A 70 kg rider burns ~480 kcal/hr at a leisurely <10 mph (MET 4.0), ~560 at 10–12 mph (MET 6.8), and ~840+ at a hard 16–19 mph (MET 12.0).

Why are calories bracketed by speed?

Aerodynamic drag rises with the cube of speed, so cycling intensity (MET) jumps sharply at higher speeds rather than scaling linearly. The calculator uses standard speed-bracket MET values to capture this.

Does this account for wind, hills, or drafting?

No - it is a flat-road, no-wind estimate. Climbing and headwinds raise expenditure substantially; drafting and descents lower it. A power meter is the only precise method. This estimate is for general guidance only - work with a qualified coach or sports medicine professional before pushing limits or recovering from injury.

Is indoor cycling the same as road cycling?

Calorie burn is similar for matched effort, but stationary bikes lack coasting and air resistance, so steady indoor efforts can burn comparably or more per minute. Use the speed bracket that matches your perceived effort.

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Estimates for informational purposes only.

Important Disclaimer: Estimates for informational purposes only.

This calculator provides estimates for informational purposes only. Results are based on assumptions and may not reflect actual outcomes. Consult qualified professionals in relevant fields before making important decisions based on these results.

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How This Calculator Works

Cycling energy expenditure is estimated with the MET equation: Calories = MET × weight (kg) × duration (hours). The MET (Metabolic Equivalent of Task) for cycling rises sharply with speed because aerodynamic drag grows roughly with the cube of velocity. This tool selects a MET from the Compendium of Physical Activities based on the speed you enter, then multiplies by your body mass and ride time. If you enter distance instead of duration, the time is derived from distance ÷ speed.

Because energy scales with body mass, two riders on the same route at the same speed burn very different totals: a 90 kg cyclist expends roughly 50% more than a 60 kg cyclist for an identical effort. That is why entering an accurate weight matters more than fine-tuning the speed bracket. The duration term is equally important - a single MET point of difference compounds across a multi-hour ride, so honest pace and time inputs produce the most trustworthy estimate.

Cycling MET Values by Speed

Under 10 mph (leisure): MET 4.0 - relaxed flat riding, light effort

10–11.9 mph (light): MET 6.8 - casual commuting pace

12–13.9 mph (moderate): MET 8.0 - steady recreational training

14–15.9 mph (vigorous): MET 10.0 - brisk, sustained aerobic effort

16–19 mph (fast): MET 12.0 - racing tempo, strong fitness required

20+ mph (racing): MET 15.8 - competitive sprint and time-trial intensity

Why Terrain & Wind Change Everything

The Compendium values assume relatively flat ground in calm air. Real rides rarely cooperate. Climbing a 5% grade can double your power output at the same speed, while a stiff headwind can make 12 mph feel like a 20 mph effort. Conversely, drafting in a group or descending lets you cover ground with almost no energy cost. Treat the calorie figure as a flat-road baseline and adjust upward for hilly routes, heavy bikes, off-road surfaces, or windy conditions.

Common Mistakes That Inflate the Number

The single biggest error is using average speed when much of the ride was coasting, stopped at lights, or descending. Stationary-bike "calories burned" displays are notoriously generous - many overestimate by 15–25% because they ignore your actual weight. Also avoid double counting: the MET figure already includes your resting metabolism, so do not add your basal burn on top. For a deficit you can trust, subtract the calories you would have burned just sitting (roughly 1 MET) if precision matters.

Limitations of MET Estimates

MET tables describe a population average, not you specifically. Mechanical efficiency, fitness level, cadence, bike fit, tire pressure, and rolling resistance all shift the true cost by 10–20%. A power meter measuring kilojoules is far more accurate (1 kJ ≈ 1 kcal at typical 20–25% gross efficiency). Use this estimate for trends and goal setting rather than precise nutrition accounting, and never eat back every estimated calorie if weight loss is the goal.

The figures here also assume a conventional road or hybrid bike. E-bikes with pedal assist can cut rider energy expenditure by 30–50% depending on assist level, while a heavy mountain bike on technical singletrack can exceed the listed MET considerably. Indoor smart trainers and spin classes introduce their own variance: many estimate calories from a generic rider profile and ignore your true mass entirely. If you ride frequently and care about accurate energy balance, a calibrated power meter or a trainer that reports actual watts is the only way to remove most of this uncertainty - the MET method is best treated as a directional guide that is consistent enough to compare one ride against another over time.

Cycling Calorie Calculator

Frequently Asked Questions

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