Health & Medicine · Dietetics
Cycling Calorie Burn Calculator
Estimate calories burned while cycling based on body weight, duration, and riding intensity using MET-based energy expenditure formulas.
Calculator
Formula
MET is the Metabolic Equivalent of Task for the cycling intensity selected; W_kg is the rider's body weight in kilograms; t_hours is the riding duration in hours. The result is total kilocalories expended.
Source: Ainsworth BE et al. 2011 Compendium of Physical Activities. Medicine & Science in Sports & Exercise, 43(8):1575-1581.
How it works
The calculation is based on the MET framework published in the Compendium of Physical Activities (Ainsworth et al., 2011). A MET value represents the ratio of your working metabolic rate to your resting metabolic rate — a MET of 1 equals roughly 1 kcal per kilogram of body weight per hour at rest. Multiplying MET by body weight in kilograms and duration in hours gives total kilocalories: Calories = MET × Weight (kg) × Duration (hours).
Each cycling intensity band corresponds to a specific MET value: easy leisure cycling (~3.5 MET) up to competitive racing (15.8 MET). These values are drawn directly from the 2011 Compendium, the gold-standard reference used by exercise physiologists worldwide. The formula captures how dramatically speed and effort level affect calorie burn.
The fat-burn estimate assumes that approximately 7,700 kcal of energy deficit corresponds to roughly 1 kg of fat tissue (a widely used approximation). This output is illustrative — actual fat oxidation depends on exercise intensity, fitness level, nutritional status, and many other factors.
Worked example
Example: A 75 kg cyclist rides at a moderate pace (19–22 km/h, MET = 8.0) for 90 minutes.
Step 1 — Convert duration to hours: 90 ÷ 60 = 1.5 hours.
Step 2 — Apply the formula: Calories = 8.0 × 75 × 1.5 = 900 kcal.
Step 3 — Calories per minute: 900 ÷ 90 = 10 kcal/min.
Step 4 — Estimated fat burned: 900 ÷ 7700 ≈ 0.117 g of fat tissue.
This means a 75 kg rider cycling moderately for 1.5 hours burns approximately 900 kilocalories, which is a substantial contribution to a daily energy deficit.
Limitations & notes
The MET method assumes a standard resting metabolic rate of approximately 3.5 mL O₂/kg/min and does not account for individual variation in fitness, age, sex, or cycling efficiency. Heavier riders and less fit individuals may burn slightly more calories at the same pace, while highly trained cyclists burn fewer. Wind, gradient, road surface, and bicycle type (road vs. mountain) also affect actual expenditure but are not captured here. The fat-gram estimate uses a simplified constant (7,700 kcal/kg) and does not reflect real-time substrate utilisation, which shifts with exercise intensity. For clinical or competitive sports nutrition purposes, indirect calorimetry or laboratory testing is recommended.
Frequently asked questions
How accurate is the MET-based calorie estimate for cycling?
MET-based estimates are accurate to within roughly ±10–20% for most people under field conditions. The main sources of error are individual differences in cycling efficiency, fitness level, and terrain. Studies comparing MET estimates to direct calorimetry find good agreement at a population level, though individual results can vary more widely. For best accuracy, use a heart-rate monitor or power meter alongside this tool.
Does cycling speed or heart rate give a better calorie estimate?
Power output (measured in watts by a cycling power meter) is the most accurate field estimate of calorie burn. Heart rate is the second-best method when a personalised heart-rate-to-oxygen-consumption curve has been established. Speed-based MET values (as used here) are the simplest approach and are validated at the population level, but power and heart rate better capture day-to-day variation in effort and environmental conditions like wind and gradient.
How many calories does a 70 kg person burn cycling for 1 hour at moderate intensity?
At moderate intensity (MET 8.0), a 70 kg rider burns approximately 8.0 × 70 × 1 = 560 kcal per hour. This equates to about 9.3 kcal per minute. Increasing pace to vigorous (MET 10.0) would raise the total to 700 kcal for the same hour.
Does cycling burn more calories than running?
Running generally burns more calories per minute at comparable perceived exertion, because it is a full weight-bearing activity. A moderate run (MET ~8) burns similar calories to fast cycling, but elite running paces have higher MET values than equivalent cycling paces. However, cyclists can sustain effort for longer periods, so total session calories may be comparable. Both activities are excellent for energy expenditure.
Does body weight significantly affect cycling calorie burn?
Yes. Because the formula multiplies MET by body weight, a rider who weighs 90 kg burns exactly 50% more calories than a 60 kg rider at the same speed and duration. This is because more mass requires more energy to move, especially when climbing or accelerating. Conversely, lighter riders have an advantage on hills because the weight penalty per watt is lower.
Can I use this calculator for indoor cycling or stationary bike workouts?
Yes. Select the intensity band that matches your perceived effort or target heart rate. For a spin class at high effort, 'Vigorous' (MET 10.0) or 'Very Vigorous' (MET 12.0) is appropriate. For a gentle warm-up on a stationary bike, 'Very Light' (MET 3.5) or 'Light' (MET 5.8) is more accurate. Many indoor cycling apps also report watts, which can help you select the right intensity band.
How do I use the calorie estimate to support weight loss?
A deficit of approximately 7,700 kcal is associated with losing about 1 kg of body fat. If cycling burns 600 kcal per session and you ride four times a week, that totals 2,400 kcal/week from exercise alone. Combined with a modest dietary reduction of 300–500 kcal/day, a healthy and sustainable weight loss rate of 0.5–1 kg per week is achievable. Always consult a registered dietitian or physician before starting a weight-loss programme.
Last updated: 2025-01-30 · Formula verified against primary sources.