Running Calorie Calculator

A 170 lb runner burns about 413 calories in a 30-minute 3-mile run

Run 3 miles on flat ground in 30 minutes (a 10:00 mile, or 6 mph) and a 170 lb (77 kg) runner burns about 413 kcal. Of that, 372 kcal is the extra energy the running itself costs, and the other 41 kcal is what the body would spend sitting still for the same half hour. The running part is about 0.73 kcal per pound of body weight for every mile, so multiplying your weight in pounds by the miles you ran gives a quick estimate.

The calculator above works from any two of distance, time and pace, and it also accounts for treadmill or hill incline. Flat running uses the running equation of the American College of Sports Medicine (ACSM). Uphill and downhill running use the ratio of the energy-cost curve that Minetti and colleagues (2002) measured on slopes from −45% to 45%.

When it helps to check running calories

• Turning a running app's log into calories: copy the distance and time from your app or watch, and the result splits into the total burn and the extra energy running adds.
• Planning a day's intake alongside your training: enter a goal in calories and the calculator shows how many minutes or miles at your current pace it takes to get there.
• Choosing speed and incline on a treadmill: compare 1%, 5% and 10% incline over the same 30 minutes at a glance.
• Preparing for a half or full marathon: the race-distance cards show the calories and the finishing time if you hold your current pace.

Calories are only one of the things running does. In a study that followed 55,137 adults for an average of 15 years, runners had a 30% lower risk of death from any cause and a 45% lower risk of death from cardiovascular disease than non-runners, and the risk was much lower even among people who ran 5 to 10 minutes a day or slower than 6 mph (Lee et al. 2014). A meta-analysis of 14 studies (232,149 people) also linked running to a 27% lower risk of death from any cause, but found no sign that more frequent, longer or faster running added further benefit (Pedisic et al. 2020).

How to use the calculator

1. Pick the figures you know: at the top, choose “Distance + time,” “Distance + pace” or “Time + pace,” whichever two your app or treadmill shows. The third value fills in on its own in the “auto” field.
2. Enter your run: type the time in the hours, minutes and seconds fields and the pace as minutes and seconds per mile. On a treadmill you can enter the speed in mph instead. Pace and speed are the same value, so changing one updates the other.
3. Enter your weight: calories scale almost directly with body weight. Use your usual weight, not counting clothes and shoes.
4. Set the incline: on a treadmill, enter the incline percentage on the display, and leave it at 0 for flat outdoor running. Put a minus sign in front of a downhill grade.
5. Read the result: the big number is the total burned while you ran, and the bar beneath splits it into the extra energy from running and what you would burn at rest anyway. The “If only the pace changes” chart and the race-distance cards compare other conditions.

How the calculation works

VO₂ (mL/kg/min) = 3.5 + 0.2 × speed (m/min)

The ACSM running equation gives the oxygen one kilogram of body weight uses each minute, based on speed. The 3.5 is the oxygen used at rest (1 MET), and the 0.2 is the extra oxygen needed for every meter run. Converting 1 L of oxygen to 5 kcal makes the calories per minute VO₂ × weight (kg) ÷ 200. The cost of covering one kilometer is 0.2 × 1,000 ÷ 200 = 1 kcal per kg of body weight, whatever the speed. In US units that is 1.609 kcal per kg per mile, or about 0.73 kcal per lb per mile. The equation was built for steady-state running faster than 8 km/h (5 mph, 134 m/min).

With an incline, the extra energy from running is multiplied by an incline ratio. The ratio comes from the equation Minetti and colleagues (2002) fitted to running cost on slopes, Cr(i) = 155.4i⁵ − 30.4i⁴ − 43.3i³ + 46.3i² + 19.5i + 3.6 (J/kg/m, with i as the grade written as a decimal), divided by the flat value of 3.6. The ACSM equation has its own grade term, but this ratio sits closer to the uphill running values in the 2024 Compendium of Physical Activities and stays sensible on downhills, so the calculator uses it.

Running calories by body weight and distance

The table gives the total burn on flat ground at a 10:00 per mile pace (6 mph). Over the same distance, calories change little with pace, so you can use these numbers as estimates for other paces too.

At 6 mph on flat ground, a runner spends about 0.81 kcal per pound for every mile (0.73 for the running itself plus about 0.08 for the resting burn). A 170 lb runner therefore uses about 138 kcal per mile, or about 826 kcal in an hour. Walking at about 3 mph (4.8 km/h), the same runner uses about 98 kcal per mile, so running costs about 1.4 times as much over the same distance. A study that measured walking and running over 1,600 m also found running cost about 1.4 times as much (Hall et al. 2004).

Does running faster burn more calories?

Over the same distance, running faster hardly adds any calories. The running part is set by distance, and a slower pace only makes the run longer, which adds a little to the resting burn. Over the same time, though, a faster pace covers more ground and burns far more. That is why, in the calculator's “If only the pace changes” chart, the solid line (same distance) is nearly flat while the dotted line (same time) climbs steeply.

The table is for a 170 lb runner. For calories alone, how far you go matters more than how fast. Running faster does let you burn the same calories in less time, so raising the pace is one option on a day when time is short.

Treadmill incline, hills and downhills

Going uphill adds the work of lifting your body, so calories rise quickly, and downhill they fall. The table is for a 170 lb runner at 6 mph for 30 minutes (3 mi).

• 1% on the treadmill: in a study of 9 trained men, a treadmill grade of 1% matched the energy cost of outdoor running at 10.5 to 18 km/h (6.5 to 11.2 mph), and at the two slowest speeds 0% did not differ either (Jones and Doust 1996). To make a treadmill run feel like the road, set it to 1%. In this calculator 0% is the treadmill baseline, so leave flat outdoor runs at 0 and enter 1% for a fast outdoor run to allow for air resistance.
• Percent grade versus degrees: the treadmill percentage is the height gained (in feet or meters) for every 100 units you move forward. A 10% grade is about 5.7°, and typing degrees into the percent field makes the calories come out too low.
• Downhill: calories drop, but your leg muscles work like brakes, which makes soreness the next day more likely. The calculator accepts grades down to −15%.

Why it differs from your watch or other calculators

• Total versus active calories: many watches and apps show only “active” calories, with the resting burn taken out. Compare that figure with the “extra burned by running” part of this calculator.
• Heart rate: a watch estimates calories separately from heart rate and movement, so the same distance at the same pace can give different numbers depending on how you feel and on the temperature.
• The equation: calculators that use MET tables take the running values by speed from the 2024 Compendium. As the table below shows, those come out 8 to 15% lower than this calculator at the same speed. Energy actually measured over 1,600 m on a treadmill and a 400 m track was close to the ACSM equation's result (Hall et al. 2004), and it also agrees with the classic measurement of about 1 kcal per kg per km (Margaria et al. 1963), so this calculator uses the ACSM equation.

The Compendium calories are METs × weight × hours. Even at the same speed, the oxygen a person uses varies with running form and training, so the real burn is safest thought of as lying somewhere between the two values.

Common mistakes

• Counting time spent stopped: including traffic lights or water breaks makes the pace come out slower. Enter the app's “moving time” or the time you actually ran. With the same distance and weight, the total calories hardly change.
• Mixing in walking: entering a whole run-walk session as running overstates the calories. Calculate the walking parts separately with the walking calorie calculator.
• Comparing with the treadmill display: machines calculate in different ways and use a default weight if you do not enter yours. Check whether you entered your weight on the machine first.
• Swapping total burn for food one-to-one: the total includes energy you would burn without running. The extra energy from exercise is the running part.
• Reading the fat equivalent as weight loss: it is a rough figure that treats 1 g of body fat as 7.7 kcal. Real weight change depends on diet and the body's adaptation, and it does not drop by that amount (Hall 2008).

Limits and cautions

• The ACSM running equation was built for steady-state running faster than 8 km/h (5 mph). For slow jogging at 6 to 8 km/h (3.7 to 5 mph) it can differ more from the real value.
• The incline ratio comes from data on 10 elite mountain endurance athletes (average weight 61.2 kg, about 135 lb). The real increase on steep uphills can differ for an ordinary runner. The paper also reports that these athletes' downhill cost was some 40% lower than reported for sedentary people, so an ordinary runner may burn more on downhills than this calculation shows.
• Wind, temperature, surface (trail or sand), carried weight and running efficiency are not included. At higher speeds, air resistance outdoors makes you burn a little more.
• The extra energy the body keeps using for a while after exercise (excess post-exercise oxygen consumption) is not included.
• The numbers are estimates from an average equation for healthy adults, not medical measurements. If you have chest pain, dizziness or severe shortness of breath, stop exercising and talk to a health professional.

The Physical Activity Guidelines for Americans (2nd edition, 2018) recommend that adults get 150 to 300 minutes of moderate-intensity aerobic activity a week, or 75 to 150 minutes of vigorous activity. The WHO 2020 guidelines give the same ranges. The calculator's “vs. 150 min a week” box counts vigorous activity double (75 minutes = 100%).

Checked on The original ACSM running equation, the Minetti 2002 incline polynomial, the running METs in the 2024 Adult Compendium, the Physical Activity Guidelines for Americans (2nd edition) and the WHO 2020 guidelines were checked on 2026-10-19.

Sources

• 01Koutlianos N, et al. Indirect estimation of VO2max in athletes by ACSM's equation: valid or not? Hippokratia. 2013;17(2):136-140ACSM running equation VO2 = 0.2·speed + 0.9·speed·grade + 3.5, for steady-state speeds above 8 km/h (134 m/min)
• 02Hall C, et al. Energy expenditure of walking and running: comparison with prediction equations. Med Sci Sports Exerc. 2004;36(12):2128-21341,600 m: 481 kJ running vs 340 kJ walking; the ACSM running equation is close to the measured values
• 03Margaria R, et al. Energy cost of running. J Appl Physiol. 1963;18:367-370Net cost of flat running about 1 kcal per kg per km, independent of speed (2 athletes, up to 22 km/h)
• 04Minetti AE, et al. Energy cost of walking and running at extreme uphill and downhill slopes. J Appl Physiol. 2002;93(3):1039-1046Running cost polynomial for grades −45% to 45%, 10 elite mountain athletes
• 05Jones AM, Doust JH. A 1% treadmill grade most accurately reflects the energetic cost of outdoor running. J Sports Sci. 1996;14(4):321-327Treadmill grade of 1% = outdoor running, 10.5 to 18 km/h
• 062024 Adult Compendium of Physical Activities: RunningRunning METs by speed and grade, with codes (12xxx)
• 07Herrmann SD, et al. 2024 Adult Compendium of Physical Activities. J Sport Health Sci. 2024;13(1):6-12Definition of the MET and values by activity
• 08U.S. Department of Health and Human Services. Physical Activity Guidelines for Americans, 2nd edition (2018), Executive SummaryAdults: 150 to 300 min a week of moderate or 75 to 150 min of vigorous activity
• 09World Health Organization. WHO guidelines on physical activity and sedentary behaviour (2020)Same weekly ranges for adults
• 10Lee DC, et al. Leisure-time running reduces all-cause and cardiovascular mortality risk. J Am Coll Cardiol. 2014;64(5):472-48155,137 people, average 15 years: 30% lower all-cause and 45% lower cardiovascular mortality
• 11Pedisic Z, et al. Is running associated with a lower risk of all-cause, cardiovascular and cancer mortality, and is the more the better? Br J Sports Med. 2020;54(15):898-90514 studies, 232,149 people, 27% lower all-cause mortality; no sign that more is better
• 12Hall KD. What is the required energy deficit per unit weight loss? Int J Obes. 2008;32(3):573-576Limits of the 3,500 kcal per pound (about 7,700 kcal per kg) rule

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