Cycling Calories Per KM Calculator
Calculate your calorie burn for every kilometre you ride
For metric riders, knowing your calories per kilometre is the most practical way to track energy expenditure by distance. This calculator gives you a per-km calorie estimate based on your body weight and cycling speed. Whether you're planning a 10 km commute or a 100 km weekend ride, per-km data helps you fuel and recover properly.
How Per-KM Calorie Burn Works
Calories per kilometre connects your energy output to distance in metric units. A 70 kg rider burns approximately 18–32 kcal per km depending on cycling speed. Like per-mile data, per-km figures stay relatively stable across speeds because faster riding takes less time per km but at higher intensity.
Body weight is the dominant factor. Terrain is the second — a flat ride at 25 kph costs about 28 kcal/km, but a hilly ride at the same average speed can cost 35–40 kcal/km due to the extra work of climbing.
How to Calculate Your Per-KM Burn
Three steps to your per-kilometre calorie estimate
Enter Your Weight
Input your weight in kilograms, pounds, or stones. Your body weight determines the base energy cost per kilometre.
Enter Distance and Speed
Set your ride distance in kilometres and your average speed (kph) or duration. The calculator finds the right MET bracket automatically.
See Per-KM Results
View your total calories, calories per kilometre, MET value, and ride duration in one display. Use these figures for nutrition planning.
Using Per-KM Data Effectively
Per-km calorie numbers are perfect for planning long rides. If you know you burn 28 kcal/km, a 100 km ride costs roughly 2,800 kcal — nearly a full day's food intake. Plan refuelling stops every 30–40 km on rides over 60 km.
Track your per-km calorie cost over weeks. As your cycling fitness improves, you may see a slight decrease in per-km cost at the same speed — this means your body is becoming more efficient at converting energy into forward motion.
Cycling Calories Per KM — FAQ
Common questions about per-km cycling calorie burn
A 70 kg rider burns approximately 18–32 kcal per km depending on speed. At 20 kph the figure is about 28 kcal/km. At 15 kph it's about 18 kcal/km.
For a 70 kg rider at moderate speed (20 kph), roughly 35–40 km burns about 1,000 kcal. This takes approximately 1 hour 45 minutes to 2 hours.
Yes, significantly. Climbing hills can increase per-km calorie cost by 30–50% compared to flat terrain. Wind resistance and road surface also add to the energy cost per kilometre.
Yes. Mountain bikes have wider, knobbier tyres and higher rolling resistance, which increases energy cost per km. A mountain bike on trails may burn 25–40% more calories per km than a road bike on pavement.
Per-km calorie burn increases modestly with speed. The MET value rises with speed, but you spend less time per km. The net effect is a gradual increase — from about 18 kcal/km at 15 kph to about 32 kcal/km at 35 kph for a 70 kg rider.