NutritionAnswer

HOW MANY CALORIES DOES CYCLING BURN PER HOUR?

By Anthony WalshRoadman CyclingUpdated 10 July 2026

ANSWER

Cycling burns approximately 400-1,000 calories per hour depending on intensity, body weight, and terrain. A 75kg rider at a moderate pace (20-25 km/h) burns roughly 500-600 kcal per hour. At higher intensities (28-32 km/h), this rises to 700-900 kcal per hour. The most accurate way to measure calorie burn is with a power meter: multiply average power in watts by ride duration in hours, then multiply by 3.6 to convert kilojoules to approximate kilocalories. Body weight, wind resistance, gradient, and efficiency all affect the figure.

KEY TAKEAWAYS

A 75kg rider burns roughly 500-600 kcal/hour at moderate intensity (20-25 km/h).
Power meters provide the most accurate calorie estimate: kJ output is roughly equal to kcal burned.
Heavier riders burn more calories at the same speed due to greater energy cost.
Climbing burns significantly more calories per hour than flat riding at the same perceived effort.
Heart rate and speed-based estimates can be off by 20-30% — use power data where available.

WHO THIS IS FOR

IS THIS YOU?

The weight-loss rider

You want to know how many calories cycling actually burns so you can plan your nutrition.

The data-driven cyclist

You want an accurate calorie figure for recovery fuelling and daily energy balance.

THE ROADMAN VIEW

Calorie burn from cycling is higher than most people expect, which is part of why the sport is so effective for body composition. A two-hour ride at moderate pace can burn 1,000-1,200 kcal — the equivalent of skipping lunch entirely. The problem is that most estimates from apps and watches are wildly inaccurate.

If you have a power meter, use it. The kilojoule output from your ride is almost identical to the kilocalorie expenditure because human efficiency sits around 20-25%. A ride that reads 800kJ on your head unit burned approximately 800 kcal. Everything else — heart rate estimates, speed-based calculators — is a rough guess at best.

EXPERT EVIDENCE

WHAT THE EXPERTS SAY

Dr Asker JeukendrupSports nutrition researcher
Energy expenditure during cycling is most accurately estimated from mechanical work output (power data). The gross efficiency of cycling is approximately 20-25%, meaning that for every kilojoule of mechanical work, approximately 4-5 kJ of metabolic energy is expended. In practical terms, kJ from a power meter closely approximates kcal burned.
Dr Andrew CogganExercise physiologist, power training researcher
Heart rate-based calorie estimates are influenced by temperature, hydration, caffeine, fatigue, and cardiac drift — all of which introduce error. Power-based energy expenditure measurement removes these variables and provides a figure within 5% of laboratory calorimetry.

PRACTICAL APPLICATION

DO THIS WEEK

Use power data for accurate calorie tracking
After a ride, check the total kilojoules (kJ) on your head unit or training platform. This figure, in kJ, is approximately equal to kcal burned. A 900kJ ride burned roughly 900 kcal.
Estimate without power data
Multiply your body weight in kg by the number of hours ridden, then multiply by an intensity factor: 6-8 for easy riding, 8-10 for moderate, 10-13 for hard. Example: 75kg x 2 hours x 8 = 1,200 kcal for a moderate 2-hour ride.
Use calorie data for recovery fuelling
After a ride that burned 1,000+ kcal, aim to replace 50-60% of that within 2 hours through a meal containing carbohydrate and protein. A 4:1 carb-to-protein ratio supports glycogen replenishment and muscle repair.

COMMON MISTAKES

WHAT CYCLISTS GET WRONG

MISTAKETrusting calorie burn figures from Strava or a smartwatch without power data.
FIXThese estimates can overstate calorie burn by 20-40%. Use them as a rough guide only. Power-based kJ data is far more reliable.
MISTAKEEating back all the calories burned to reward yourself.
FIXIf your goal is weight management, eating back every calorie negates the deficit. Replace enough to recover (50-60% post-ride), then eat normally at your next meal.
MISTAKEAssuming all rides burn the same calories per hour.
FIXAn easy coffee ride burns 300-400 kcal/hour; a hard group ride or hill session can burn 800-1,000 kcal/hour. Intensity matters as much as duration.

FAQ

FREQUENTLY ASKED QUESTIONS

Does cycling burn more calories than running?

Per minute, running typically burns more calories because it involves supporting full body weight. Per session, cycling often burns more because riders typically exercise for longer. A 3-hour ride easily burns more total calories than a 45-minute run.

Do heavier riders burn more calories cycling?

Yes. A heavier rider requires more energy to move the same speed, especially uphill. A 90kg rider burns roughly 20% more calories per hour than a 75kg rider at the same intensity.

Does cycling burn belly fat specifically?

No exercise targets fat from a specific area. Cycling creates a caloric deficit that reduces total body fat. Where fat is lost first is determined by genetics, not the type of exercise.

How accurate is Strava calorie burn?

Without power data, Strava estimates can be 20-40% too high. With a power meter connected, accuracy improves significantly because it uses kJ output rather than speed or heart rate estimates.