Cycling Calories Calculator
Estimates calories burned during cycling using the Compendium of Physical Activities MET formula, accounting for body weight, ride duration, and intensity. Useful for nutrition planning, weight management, and post-ride refueling.
Last updated: May 2026
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About this calculator
The calculator uses the standard Compendium of Physical Activities formula: Calories = Weight (kg) × MET × 3.5 / 200 × Duration (minutes). The MET (Metabolic Equivalent of Task) is intensity-specific: light cycling (12-14 mph / 19-23 km/h) ~6 MET, moderate (14-16 mph / 22-26 km/h) ~8 MET, vigorous (16-19 mph / 26-31 km/h) ~10 MET, very vigorous (19-22 mph / 31-35 km/h) ~12 MET. The constants 3.5 and 200 convert MET to kcal/min using the standard 3.5 mL O2/kg/min per MET and 5 kcal per liter of oxygen consumed. Variables: Weight is body weight in kg (each additional 10 kg adds about 14% more calories burned at the same MET); Duration is total ride time in minutes; Intensity is selected by speed band. Edge cases: MET values come from population averages and individual values vary 15-25% due to fitness, efficiency, and metabolic differences. Wind, elevation, and weight carried (panniers, ride pack) all shift the actual MET for a given speed — a 250 W output on flat ground is ~10 MET but on a 5% climb requires the same effort at much lower speed. For training-pace measurement, power-based calorie estimates (kcal ≈ kJ × 1.05 from a power meter) are more accurate than MET-based estimates because power directly captures mechanical work. The calculator does not account for excess post-exercise oxygen consumption (EPOC), which adds 5-10% extra calorie burn for 1-3 hours after intense rides.
How to use
Example 1 — Moderate one-hour ride. 70 kg rider, 60 minutes at moderate intensity (8 MET). 70 × 8 × 3.5 / 200 × 60 = 588 kcal. Verify ✓. About 2.5 standard energy bars to replace if you want to refuel fully. Example 2 — Heavy rider, long vigorous ride. 90 kg rider, 120 minutes at vigorous intensity (10 MET). 90 × 10 × 3.5 / 200 × 120 = 1,890 kcal. Verify ✓. That's nearly a full day's resting metabolic rate. For rides over 90 minutes at vigorous intensity, refuel during the ride (60-90 g carbs/hour) — relying solely on stored glycogen leads to bonking by 90-120 minutes for most cyclists.
Frequently asked questions
How accurate is the MET-based calorie calculation?
The Compendium of Physical Activities MET values are population averages from controlled studies, and individual variation can be 15-25% above or below the predicted burn rate. Fitter cyclists are more efficient at moderate speeds (lower MET for the same output), while less-fit riders may exceed predicted values because they recruit larger muscle volume to maintain the same speed. Body composition matters too — leaner individuals burn slightly fewer calories per kg of body weight than higher-fat individuals because muscle is metabolically more active per gram than fat at rest, but the difference is small (under 5%). For audit-grade accuracy, use a power meter and the 1 kJ ≈ 1 kcal approximation (technically 1.05 kcal per kJ of work, since human cycling efficiency is ~22-25%), which captures actual mechanical work and removes the speed-to-MET translation step. For seasoned riders who train consistently, the gap shrinks over time as fitness adaptations align metabolic efficiency with population averages — newer riders show more variability.
Why does the calculator ignore the bike's weight, elevation, and wind?
The MET formula is a behavioral classification based on observed speed band, not a physical mechanical model. The speed bands implicitly include average conditions: flat or rolling terrain, no significant wind, standard recreational bike weight. If you're carrying a 20 kg loaded touring setup over mountain passes, your actual energy expenditure at 18 km/h is much higher than the formula predicts for that speed (because the climbing power requirement exceeds the flat-road expectation). Conversely, if you draft behind a group on flat road at 30 km/h, your actual energy expenditure is 30-40% below the implied MET. For accurate ride-specific calories on varied terrain or under load, use a power meter and convert kJ × 1.05 to kcal, which captures conditions directly through the mechanical-power measurement.
Should I count calories burned in cycling toward weight loss?
Yes, but conservatively — overestimating exercise calorie burn is a leading cause of frustrated weight-loss plateaus. The MET formula tends to overestimate by 10-20% for most riders because it doesn't capture metabolic efficiency, drafting, or downhill coasting. Some weight-loss frameworks (Weight Watchers, MyFitnessPal) apply a 'partial credit' multiplier of 0.6-0.8 to recreational exercise calories to account for this overestimate plus the small but real EPOC offset and increased appetite. A more reliable approach: focus on total daily caloric intake versus a sustainable deficit (300-500 kcal/day for steady weight loss), and treat exercise as fitness, not as 'permission to eat more'. Pair the calorie estimate with a weekly weigh-in trend rather than per-ride tracking.
How does the duration relate to body weight in the formula?
The formula multiplies weight, MET, and duration: doubling any one of these doubles calorie burn. A 90 kg rider burns roughly 30% more than a 70 kg rider at the same speed and time (90/70 = 1.29). A 60-minute ride at moderate intensity burns 2× what a 30-minute ride at the same intensity burns. This is because heavier bodies require more oxygen (hence more energy) to support the same mechanical work — even though heavier riders have slightly more momentum-conservation advantage, the metabolic cost dominates. Note that on long, slow rides, MET also doesn't capture progressive fatigue — your last hour of a 4-hour ride burns slightly fewer calories per minute than the first hour because you've slowed down and reduced muscle recruitment.
When should I not use this calculator?
Skip it for very short or very long rides — under 10 minutes the warm-up bias inflates apparent intensity, and over 4 hours fatigue causes power and speed to drop in ways the speed-band MET doesn't capture. Do not use it for indoor trainer or smart-trainer rides if you have a power meter; convert kJ to kcal directly (1.05× factor) for much higher accuracy. Skip it for racing-style efforts (interval workouts, hill repeats, race pace) where the high-intensity sections are short bursts that don't fit the steady-speed MET bands well. For weight-loss tracking, prefer total daily caloric intake versus weight trend over time rather than per-ride calorie burn — exercise calorie estimates compound their error over weeks. For clinical or research-grade metabolic measurement, use a metabolic cart with VO2/VCO2 analysis.