Treadmill Pace Chart

Treadmill Calorie Calculator – Walking, Running & Incline

Estimate the calories you burn on a treadmill from your weight, speed, incline and time. The calculator uses the ACSM walking and running equations and shows both total calories and active calories above rest.

Calculate treadmill calories

Weight 30–250 kg (66–551 lb). Incline 0–15%, as a percent. Time as H:MM:SS, M:SS or whole minutes.

304total calories (kcal)

267active calories above rest

10.1 kcal/min · 8.3 METs · 1.50 mi (2.41 km) · 178 active kcal/mile

For 70 kg, walking 3 mph at 12% for 30 minutes. ACSM walking equation, 5 kcal per liter of oxygen. Hands-free; an estimate, not a measurement.

How this is calculated

Calories burned on a treadmill in 30 minutes

Total calories (kcal) for 30 minutes at a steady speed, by body weight and incline. Calculated with the same equations as the calculator, then rounded.

Walking at 3 mph (4.8 km/h)

Total kcal in 30 minutes, walking at 3 mph; ACSM walking equation.
Incline120 lb (54 kg)150 lb (68 kg)180 lb (82 kg)210 lb (95 kg)240 lb (109 kg)
0%94118141165189
3%130162195227260
6%165207248289330
9%201251301351401
12%236295354413472
15%272340407475543

Running at 6 mph (9.7 km/h)

Total kcal in 30 minutes, running at 6 mph; ACSM running equation.
Incline120 lb (54 kg)150 lb (68 kg)180 lb (82 kg)210 lb (95 kg)240 lb (109 kg)
0%291364437510583
2%315394473551630
4%339423508593677
6%362453543634725
8%386482579675772
10%410512614717819

Gross calories, including resting energy. Subtract about 0.525 kcal per kg of body weight for active calories over 30 minutes. Steady, hands-free walking or running; not for downhill.

Source: https://treadmillpacechart.com/treadmill-calorie-calculator/ (updated 2026-10-24). Equations: https://pmc.ncbi.nlm.nih.gov/articles/PMC7356312/#T1

How treadmill calories are calculated

The calculator first estimates your oxygen use with the ACSM metabolic equations, then converts oxygen to calories. Speed s is in meters per minute and grade g is a fraction (12% = 0.12):

Walking: VO₂ = 3.5 + 0.1 × s + 1.8 × s × g

Running: VO₂ = 3.5 + 0.2 × s + 0.9 × s × g

VO₂ is in mL of oxygen per kg of body weight per minute. Each liter of oxygen releases about 5 kcal (Janot, IDEA), so:

calories per minute = VO₂ × weight in kg ÷ 1000 × 5

That gives total (gross) calories. The first term, 3.5 mL/kg/min, is your resting oxygen use, or 1 MET. Dropping it gives active (net) calories, the energy the workout added on top of being alive. METs are VO₂ ÷ 3.5.

Worked example: 70 kg, 3 mph, 12% incline, 30 minutes

3 mph is 80.47 m/min. Walking VO₂ = 3.5 + 0.1 × 80.47 + 1.8 × 80.47 × 0.12 = 28.93 mL/kg/min, or 8.3 METs.

Calories per minute = 28.93 × 70 ÷ 1000 × 5 = 10.12 kcal. Over 30 minutes that is about 304 total calories, or 267 active calories after removing the resting 37. The same walk on a flat belt burns about 121 in total, so the 12% incline adds about 151%. This is the popular 12-3-30 workout, which also climbs about 944 feet; see the treadmill elevation gain calculator.

Walking or running: which equation applies

The walking equation is meant for about 1.9–4 mph (3.1–6.4 km/h). The running equation is meant for speeds above 5 mph (8 km/h), or from 3 mph if you are truly jogging. Pick the one that matches your gait, not your speed: a fast walk and a slow jog at 4 mph cost different amounts. The calculator warns when your speed falls outside the range of the equation you chose.

Flat running costs roughly the same per mile at any speed in this model: about 1.0 active kcal per kg per km, or 113 active calories per mile for a 70 kg runner. Running faster burns more per minute, not much more per mile.

What makes your real burn different

Handrails. Holding or leaning on the rails takes weight off your legs and can cut the real cost well below the estimate, especially on steep inclines. The equations assume hands-free walking or running.

Gait and economy. Stride length, arm swing, footwear and practice all change how much oxygen a given speed costs. Two people of the same weight at the same speed can burn noticeably different amounts.

Individual differences. The equations predict the average person of your weight. Body composition, fitness, age and sex shift real energy use, and the 5 kcal per liter factor varies a little with the mix of fat and carbohydrate you burn. Treat the result as an estimate for steady exercise, not a measurement.

Steady state. The estimate fits steady walking or running. It does not include the warm-up, the extra burn after hard intervals, or downhill grades, which these equations do not cover.

For pace and speed conversions, use the treadmill pace calculator. To compare an incline run with flat outdoor running, use the treadmill incline calculator.

Treadmill calorie FAQs

How many calories does the 12-3-30 workout burn?

For a 70 kg (154 lb) person, walking 30 minutes at 3 mph and 12% incline burns about 304 calories in total, or 267 active calories above rest. Calories scale with body weight, so a 240 lb walker burns about 472 in total.

What is the difference between total and active calories?

Total (gross) calories include what your body burns at rest, counted as 3.5 mL of oxygen per kg per minute (1 MET). Active (net) calories leave that out, so they show only what the exercise added. Use active calories when you compare a workout with sitting still; many watches and apps call this “active energy”.

Does incline burn more calories than speed?

Both raise the burn, and which adds more depends on how much of each you add. At 3 mph, raising the incline from 0% to 12% takes this 70 kg example from 121 to 304 total calories in 30 minutes. In the ACSM walking equation the grade term is 1.8 × speed × grade, twice the running equation’s 0.9, so walking uphill costs relatively more than running uphill. Enter both options above to compare your own settings.

Should I choose walking or running at 4 mph?

Choose what you are actually doing. At 4 mph a 70 kg person burns about 149 calories in 30 minutes by the walking equation and 262 by the running equation. The walking equation is meant for about 1.9–4 mph; the running equation for speeds above 5 mph, or from 3 mph if you are truly jogging with both feet leaving the belt.

Why is this different from my treadmill console?

Consoles use their own formulas, often with a default body weight if you do not enter yours, and some show total while others show active calories. This calculator uses the published ACSM equations with your weight and shows both, so the numbers will rarely match exactly.

Does holding the handrails change the calories?

Yes. Holding or leaning on the handrails supports part of your body weight, so you burn fewer calories than the equation predicts, most of all at steep inclines. The estimate assumes you walk or run hands-free.

Sources

Pounds convert at 1 lb = 0.45359237 kg and miles at 1 mile = 1.609344 km (NIST). Updated . Estimates only; not medical or dietary advice.