Enter your speed, incline and duration to instantly calculate calories burned on treadmill. Supports km/h and mph.
Going outside? Compare with outdoor running.
🏃 Running Calculator →Prefer a leisurely pace? Try walking.
🚶 Walking Calculator →Our treadmill calorie calculator uses the MET (Metabolic Equivalent of Task) formula adjusted for both speed and incline. Unlike outdoor running calculators, treadmill workouts can vary significantly based on gradient — which is why incline is a key input here.
Here's how many calories a 70 kg person burns per 30 minutes on a flat treadmill (1% incline):
| Speed | Activity | kcal / 30 min | kcal / hour |
|---|---|---|---|
| 4 km/h | Slow walk | ~120 | ~245 |
| 5 km/h | Brisk walk | ~155 | ~310 |
| 6 km/h | Fast walk / jog | ~195 | ~390 |
| 8 km/h | Easy run | ~265 | ~530 |
| 10 km/h | Moderate run | ~295 | ~590 |
| 12 km/h | Fast run | ~360 | ~720 |
| 14 km/h | Hard run | ~415 | ~830 |
Significantly yes. Each 1% of incline increases calorie burn by approximately 5–10%. At 5% incline, you burn roughly 40% more calories than at flat grade for the same speed and duration. The "12-3-30" method (12% incline, 3 mph, 30 min) burns 250–350 kcal depending on body weight.
At 0% incline, a treadmill burns about 5–10% fewer calories than outdoor running at the same speed, because there's no wind resistance or terrain variation. Setting the treadmill to 1% incline compensates for this, making calorie burn equivalent to outdoor running.
Formula: kcal = (MET_base + incline_bonus) × weight (kg) × duration (hours) × sex_factor. MET ranges from 3.5 (slow walk) to 14+ (sprinting). Incline adds approximately 0.15 MET per 1% grade. Our calculator uses calibrated values from published exercise science data.
There are several proven strategies for maximising calorie burn during a treadmill session. Increase incline — this is the single most effective change you can make. Even adding 3–5% gradient to a moderate walk dramatically increases energy expenditure. Vary your speed — interval training (alternating between fast and slow speeds) burns significantly more calories per session than steady-state running. Extend duration — the longer you run, the more you burn; an extra 10 minutes at 10 km/h adds around 100 kcal for a 70 kg person. Avoid holding the handrails — holding the rails reduces calorie burn by up to 25% because you are offloading bodyweight onto the machine.
The 12-3-30 workout (12% incline, 3 mph / 4.8 km/h, 30 minutes) has become one of the most popular treadmill protocols. A 70 kg person burns approximately 300–350 kcal during this session — comparable to a 5 km run at moderate pace. Its appeal is that it achieves a significant calorie burn without the joint impact of running.
HIIT treadmill intervals (e.g., 1 minute sprint at 14–16 km/h followed by 2 minutes at 6 km/h, repeated 8–10 times) burn 400–600 kcal for most people in a 30–40 minute session, and produce an elevated post-exercise calorie burn (EPOC) that can last several hours after training.
Incline walking at moderate speed (6–7 km/h, 5–10% incline) is an excellent low-impact option that burns 350–500 kcal per hour for a 70 kg person — significantly more than flat walking, with far less joint stress than running.
Most treadmill displays overestimate calorie burn by 10–30%. The main reason is that built-in counters use generic formulas that do not account for your actual body weight, fitness level, or running efficiency. Many machines assume a standard weight of 68 kg (150 lbs) regardless of the user. Our treadmill run calorie calculator uses your actual weight and selected speed/incline with calibrated MET values, giving you a significantly more accurate estimate than the machine's display.
Treadmill exercise is highly effective for weight loss because it is controllable, weather-independent, and allows you to precisely manage intensity. A consistent routine of 30–45 minutes of treadmill exercise, 4–5 days per week, burns 1,500–3,000 kcal per week depending on body weight and intensity — enough to contribute meaningfully to a calorie deficit for fat loss.
Combining treadmill cardio with strength training tends to produce better long-term weight management results than cardio alone, as building muscle increases your resting metabolic rate. Use our calculator before each session to set an informed calorie-burn target, then adjust your food intake accordingly.