Treadmill Calorie Calculator

Thirty minutes on a treadmill at 3.5 mph, flat, costs a 70 kg person about 176 kcal. Push the belt to 6 mph and jog, and the same half hour is about 342. The calculator above does that sum for any speed in the list, any weight and any duration, and prints the MET value it used so you can compare it with what the console claims.

Treadmill calorie calculator: calories per hour by belt speed

Walking rows are the Compendium's treadmill entries at 0 percent grade. Running rows are the general running entries, which apply on a belt at 1 percent incline as closely as they do outdoors.

Notice the crossover. Walking at 5 to 5.5 mph costs 8.3 MET, almost the same as running at 5 mph, because walking gets mechanically awkward above about 4.5 mph and the body starts spending energy to stay in a walk. If the console lets you, run at that speed instead. Same burn, kinder on the hips.

Common sessions at 70 kg:

The formula

kcal per minute = MET x 3.5 x body weight in kg / 200

For the 3.5 mph walker: 4.8 x 3.5 x 70 / 200 = 5.88 kcal per minute, times 30, 176 kcal. Compendium code 17358. Every activity in the list below the calculator carries its code so you can check the source entry.

What incline does

The table is flat belt. Incline changes it more than most people expect, and the console's own estimate usually runs the ACSM walking equation to account for it: oxygen cost in ml/kg/min = 3.5 + 0.1 x speed in metres per minute + 1.8 x speed x grade. At 3.5 mph, 94 metres per minute, the level cost is about 12.9 ml/kg/min, or 3.7 MET. Each percent of incline adds 1.7 ml/kg/min on top, close to half a MET, so 5 percent takes the walk to about 6.1 MET and 10 percent to about 8.5. A flat walk becomes a hard run's worth of burn without a single running stride, which is why incline walking is the staple of so many fat-loss blocks.

Two footnotes to that. The ACSM level-walking figure, 3.7 MET, sits under the Compendium's measured 4.8 for the same speed, so two calculators can disagree by a quarter before anyone touches the incline button. And holding the handrails on an incline gives a good part of the climb back: most measurements put the saving at a fifth to a third of the cost. If the number matters to you, let go of the rails and drop the grade until you can.

For running, 1 percent of incline is the usual correction for the missing wind resistance at paces around 5 minutes per km and faster. Below that pace the belt at 0 percent is close enough. A curved, non-motorised treadmill is a different machine: the Compendium lists 11.0 MET for running at 5 to 5.9 mph on one, against 9.0 for the same speed on a motor belt, because you are driving the belt yourself.

The console is guessing too

Every number here describes an average person of your weight, and the console's number describes an average person of whatever weight it assumed, which is often 70 to 75 kg unless you typed yours in. Neither knows your running economy, which can put two people at the same speed 10 to 15 percent apart in oxygen cost, nor that your resting rate may sit below the 3.5 ml/kg/min both formulas start from, as it does for many heavier and older adults. Read either figure as a band, plus or minus 20 percent, and let a few weeks of weight trend tell you which edge of the band you live at.

The figure is also gross, including the roughly 1 MET you would spend sitting through the same 30 minutes. Subtract 1 from the MET for the net exercise cost. The calories burned calculator shows the gross and net sum side by side, and the MET calculator has the widest table of values if you want to look one up.

Where the number goes next

A treadmill session is one line in a day's budget. Put it against your TDEE, size the gap with the calorie deficit calculator, and use the net figure rather than the gross one when you eat any of it back. Outdoor equivalents live at the walking calorie calculator and the running calories page, which works per kilometre instead of per minute. The other machines in the gym have their own pages: the stationary bike calorie calculator and the rowing calorie calculator, both of which work from watts.

How Movement Rebels fits

A treadmill run recorded on a Garmin watch or through Apple Health on an iPhone lands in Movement Rebels with its duration, average heart rate, pace and cadence, and the coach reads it in the post-activity debrief and counts it as load when it plans your week. What it sees is your session, with your heart rate, not a table row for a 70 kg average.

The coach cannot see what you eat. Rebel Fuel is your own log and nothing from it reaches the coach, so it will not compare intake to expenditure or tell you that you earned a meal. If you are cutting, say so in the notes for your coach, and it will read a rising resting heart rate or a falling HRV as a fuelling signal instead of a fitness problem. For the plan that keeps your engine while the scale drops, read Fat Loss for Endurance Athletes.

MET values used here

Every value below is quoted from the Compendium of Physical Activities with its activity code, so you can look up the entry yourself. One MET is the oxygen cost of sitting quietly, about 3.5 ml of oxygen per kg per minute.

Walking and hiking

Treadmill walking

Running

Curved (non-motorised) treadmill running

Cycling

Stationary cycling

Rowing machine

Swimming

Strength and gym

Source: Compendium of Physical Activities (Ainsworth et al.), pacompendium.com. Codes are the Compendium's own.

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