Free Tool · MET Formula

Running Calorie Calculator

Enter your body weight, distance, pace, and effort level to calculate how many calories you burn running — and how many carbs you use. Based on the MET (Metabolic Equivalent of Task) formula used by exercise scientists.

Your Details
Pace (per km)
Total Calories
686
kcal burned
Per km
68.6
kcal / km
Energy Breakdown
Duration
60 min
at your pace
MET Used
9.8
moderate effort
Carbs Burned
111 g
~65% from carbs
Gels Equivalent
5.1
at 22g carbs / gel

How the Running Calorie Calculator Works

This calculator uses the MET (Metabolic Equivalent of Task) formula: Calories = MET × body weight (kg) × duration (hours). MET is a measure of exercise intensity standardised by sports scientists. Running has a MET range of approximately 8.0 (easy jogging) to 14.0+ (all-out race effort), compared to 1.0 for sitting still.

Duration is derived from your pace and distance. The calorie total is the gross calorie burn — total energy expended including your resting metabolic rate during the run. This is what most apps and heart rate monitors report.

MET Values for Running

The effort levels in the calculator correspond to these MET values (from the Compendium of Physical Activities):

Calories Burned Per Km — What to Expect

A useful rule of thumb: running burns approximately 1 kcal per kg of body weight per km. A 70 kg runner burns roughly 70 kcal per km at easy pace. This makes distance the primary driver of calorie burn — not speed.

Running faster does increase calorie burn slightly (higher MET), but the effect is smaller than most people expect. Running 10 km at race effort burns about 15–20% more calories than running the same 10 km at easy effort — the larger difference is how long it took you.

Fuelling Your Runs

The carbohydrate estimate in the calculator is based on roughly 65% of calories coming from carbohydrate at moderate-to-hard efforts. This means a 10 km run at moderate effort for a 70 kg runner burns approximately 120–140g of carbohydrate — close to your liver's entire glycogen reserve.

For runs under 60 minutes, water is usually sufficient. For runs of 60–90 minutes, a single gel mid-run (22g carbs) helps. For runs over 90 minutes, aim for 30–60g of carbohydrate per hour starting from the 45-minute mark.

Frequently Asked Questions

Running burns approximately 60–100 calories per km for a typical adult, depending on body weight and effort level. A 70 kg runner burns around 70–75 kcal per km at easy pace and up to 90–100 kcal per km at race effort. The MET (Metabolic Equivalent of Task) formula — MET × weight_kg × duration_hours — gives an accurate estimate for each effort level.
Yes. Faster running burns more calories per minute but a similar number per kilometre, because you cover the distance in less time. However, race-effort running has a higher MET value (around 14) compared to easy jogging (MET 8), so you do burn slightly more calories per km at higher intensities. The difference is less dramatic than most people expect — distance is the primary driver of calories burned, not speed.
Carbohydrate provides about 4 kcal per gram. A 90-minute long run for a 70 kg runner burns roughly 850–950 kcal total, of which approximately 60–70% comes from carbohydrate (510–665 kcal = 127–166g of carbs). This is why fuelling during runs longer than 75 minutes is important — your glycogen stores are limited to around 90–120 minutes of running fuel.
For performance and recovery, you should replace most of the energy burned — especially carbohydrates. Runners who under-fuel increase injury risk, slow recovery, and perform worse in subsequent sessions. For weight management, replacing 70–80% of calories burned from running is a reasonable approach that still supports recovery. Consult a sports dietitian for personalised guidance.
The MET (Metabolic Equivalent of Task) formula is: Calories = MET × body weight (kg) × duration (hours). MET values for running range from 8.0 for easy jogging to 14.0 for all-out race effort. This formula is used by sports scientists and is the basis for most wearable calorie estimates.

Want a running plan that accounts for your training load?

PacecraftAI builds adaptive marathon and half marathon plans, monitors your weekly training load, and adjusts your plan when you need more recovery. Free to start.

Start free — no credit card →