Calculator for calories burned while biking or running

This application estimates the calories burned during running or cycling activities based on fundamental data: body weight, workout duration, and intensity expressed as average speed or pace. The formula uses MET (Metabolic Equivalent of Task) values across commonly adopted speed ranges, turning your parameters into a clear and immediate calculation of the calories consumed. It is designed for runners, cyclists, and trainers who want a realistic estimate to plan workouts, nutrition, and recovery.

How it works

Enter your weight, duration in minutes, and optionally the distance, average speed, or – if you are running – the pace in minutes per kilometer. The app automatically converts the pace into speed, derives the corresponding MET, and calculates the calories based on the actual duration. If you also provide the distance, you obtain additional indicators such as calories per kilometer and calories per minute.

Required data and optional fields

Body weight and duration are sufficient for an estimate: if you do not specify a speed, the app applies a default MET for moderate intensity, which differs for running and cycling. The optional entry of distance, speed, or pace enhances accuracy by placing the activity in the most suitable MET range.

MET and intensity

METs represent the relative energy cost of activities. The app assigns METs based on speed ranges: in running, it goes from light jogging to increasingly faster paces, while in cycling, it ranges from leisurely pedaling to very high speeds. This tiered system reflects the actual energy expenditure trends while remaining easy to use.

Clear and reusable results

The result shows the selected activity, weight, duration, any distance, average speed (and equivalent pace in running), estimated MET, and total calories. It also displays indicators per minute and per kilometer, useful for comparing different workouts or setting race and energy consumption goals. With a click, you can copy everything and insert it into your training journal, nutritional plans, and reports.

Practical tips

To improve accuracy, always enter speed or average pace calculated over the entire session. If the outing includes inclines, headwinds, or uneven terrain, expect actual values to be higher than an estimate on flat ground. Consider repeating the calculation for different segments (for example, warm-up, intervals, cooldown) and summing the results.

Warnings

The calculation is an indicative estimate. Actual calorie expenditure varies based on age, sex, body composition, efficiency of movement, slope, temperature, altitude, and conditions of the medium. For clinical or advanced performance uses, rely on professional tools and the supervision of specialists.