Can I enter km/h instead of mph?

Yes, pick the unit next to the speed field. It matters more than it might seem: treadmills in the United States are marked in mph and treadmills almost everywhere else in km/h, and 10 on one display is a completely different run from 10 on the other. A 10 mph belt is a 6:00 mile; a 10 km/h belt is a 6:00 kilometre, which is a 9:39 mile.

Why is the formula 60 divided by speed?

Because speed and pace are reciprocals. Speed is distance per unit time, pace is time per unit distance, and the 60 is simply the minutes in an hour. Divide 60 by miles per hour and you get minutes per mile; divide 60 by kilometres per hour and you get minutes per kilometre. No conversion factor is needed within a unit system, only between them.

How does incline affect the calculation?

It does not. A belt at 6 mph is a 10:00 mile at 0% and at 5%, because pace describes the belt rather than the effort. What incline changes is the energy cost, substantially, and none of that reaches the display. The tool converts speed to pace, not effort to pace.

Is treadmill pace the same as outdoor pace?

The arithmetic is identical; the physiology is not, mainly because indoor running has no air resistance to overcome. Jones and Doust found that a 1% treadmill grade brought the energy cost into line with road running for nine trained runners at velocities from 2.92 to 5.0 m/s, which is roughly 6.5 to 11.2 mph or 10.5 to 18 km/h. At their two slowest velocities, flat treadmill running already matched the road, so the 1% adjustment is a fast-running correction rather than a universal one.

How accurate are treadmill speed displays?

Accuracy varies with manufacturer, model, maintenance and calibration, and belt wear and motor condition both degrade it over time. Machines can drift from the speed they display, most noticeably at the slow and fast ends of their range. The number on the console gives you no way to tell, which is why a treadmill pace disagreeing with a GPS watch does not establish which of the two is at fault.

Why do treadmills show speed rather than pace?

Because speed is what the machine controls. The motor sets belt velocity, which stays fixed regardless of how the runner moves, so it is the natural parameter for the console to report. Runners prefer pace because it maps directly onto race times and outdoor training targets, which is the gap this converter closes.

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Running

Treadmill Pace Converter

Convert a treadmill speed in mph or km/h into pace per mile and per kilometre.

JCVerified Verified by Jobi Cheriyan, Founder & Builder

Updated 21 August 2026

What this tool does

This calculator turns the speed on a treadmill display into running pace. Enter the figure in miles per hour or kilometres per hour, whichever your machine shows, and it returns the pace per mile and per kilometre along with the speed in both units and in metres per second. It uses the exact factor of 1.609344 kilometres to the mile. The conversion is arithmetic only: it says nothing about incline, which changes effort without changing the belt speed.

Enter values

Result

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Next steps

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Formula Used

p_{mi} = \frac{60}{v _{m p h}}, p_{k m} = \frac{60}{v _{k m / h}}

v_{m p h}

Speed in miles per hour

v_{k m / h}

Speed in kilometres per hour

Disclaimer

This calculator is for educational and informational purposes only. It does not provide medical, nutritional, or training advice. Results are mathematical estimates and may not reflect individual circumstances. Consult a qualified coach, registered dietitian, medical professional, or physiotherapist for personal guidance.

How the Treadmill Pace Converter works

Treadmills report speed, runners think in pace, and the two are reciprocals of each other. Enter the number on the display and pick whether the machine is showing miles per hour or kilometres per hour, and the tool returns the pace per mile and per kilometre, plus the speed in the other unit and in metres per second. Both unit systems are handled because treadmills in the United States show mph and treadmills nearly everywhere else show km/h.

The formula

Minutes per mile = 60 ÷ speed in mph, and minutes per kilometre = 60 ÷ speed in km/h. Speed is distance over time and pace is time over distance, so one is simply the reciprocal of the other, scaled by the 60 minutes in an hour. At 6.0 mph that is 60 ÷ 6 = 10:00 per mile, which is 9.66 km/h, 6:13 per kilometre, and 2.68 m/s. A machine showing 10.0 km/h gives 6:00 per kilometre, 6.21 mph and 9:39 per mile. The mile figure of 1.609344 km is exact by international agreement rather than measured (National Bureau of Standards, Federal Register, 1 July 1959).

Incline changes the effort, not the pace

This is the distinction most worth keeping straight. A belt at 6 mph moves at 10:00 per mile whether the deck is flat or tilted to 5%, because pace is a property of the belt. Effort is a different matter entirely, and the tool has no view on it. The related question, what gradient makes treadmill running cost the same as running outdoors, has a well-known answer: a 1% grade, established in nine trained runners across velocities from 2.92 to 5.0 m/s (Jones and Doust, 1996). Worth noting where that band sits: 2.92 m/s is 6.53 mph or 10.5 km/h, and 5.0 m/s is 11.18 mph or 18.0 km/h. This page defaults to 6 mph, which is 2.68 m/s and below the slowest speed they tested, and at their two lowest velocities road running was not significantly different from a flat treadmill anyway. The 1% correction earns its keep at faster speeds, not at every speed.

Where this method is most accurate

The conversion itself is exact and applies to any reading. What limits it is the display: belt speed depends on calibration, motor condition and belt wear, and a machine can drift from what it claims, particularly at the extremes of its range. Nothing about that is visible from the number on the console, so a treadmill pace and a GPS pace disagreeing does not tell you which one is wrong. If precision matters, time yourself over a known belt distance or compare against a track.

What this tool does not do

It converts units. It does not estimate calorie expenditure, training zones, or race times, and it does not translate treadmill pace into an outdoor equivalent adjusted for wind or terrain. It gives no training guidance and makes no claim about whether a speed is appropriate for anyone (ACSM, Guidelines for Exercise Testing and Prescription).

Disclaimer

This tool is intended for educational and informational purposes only. It is not a substitute for professional coaching, medical advice, or personalised training programs. All outputs are mathematical conversions based on standardised formulas. Individual running mechanics, fitness levels, and equipment calibration vary. Consult qualified professionals before beginning or modifying any exercise program.

Questions

Can I enter km/h instead of mph?: Yes, pick the unit next to the speed field. It matters more than it might seem: treadmills in the United States are marked in mph and treadmills almost everywhere else in km/h, and 10 on one display is a completely different run from 10 on the other. A 10 mph belt is a 6:00 mile; a 10 km/h belt is a 6:00 kilometre, which is a 9:39 mile.
Why is the formula 60 divided by speed?: Because speed and pace are reciprocals. Speed is distance per unit time, pace is time per unit distance, and the 60 is simply the minutes in an hour. Divide 60 by miles per hour and you get minutes per mile; divide 60 by kilometres per hour and you get minutes per kilometre. No conversion factor is needed within a unit system, only between them.
How does incline affect the calculation?: It does not. A belt at 6 mph is a 10:00 mile at 0% and at 5%, because pace describes the belt rather than the effort. What incline changes is the energy cost, substantially, and none of that reaches the display. The tool converts speed to pace, not effort to pace.
Is treadmill pace the same as outdoor pace?: The arithmetic is identical; the physiology is not, mainly because indoor running has no air resistance to overcome. Jones and Doust found that a 1% treadmill grade brought the energy cost into line with road running for nine trained runners at velocities from 2.92 to 5.0 m/s, which is roughly 6.5 to 11.2 mph or 10.5 to 18 km/h. At their two slowest velocities, flat treadmill running already matched the road, so the 1% adjustment is a fast-running correction rather than a universal one.
How accurate are treadmill speed displays?: Accuracy varies with manufacturer, model, maintenance and calibration, and belt wear and motor condition both degrade it over time. Machines can drift from the speed they display, most noticeably at the slow and fast ends of their range. The number on the console gives you no way to tell, which is why a treadmill pace disagreeing with a GPS watch does not establish which of the two is at fault.
Why do treadmills show speed rather than pace?: Because speed is what the machine controls. The motor sets belt velocity, which stays fixed regardless of how the runner moves, so it is the natural parameter for the console to report. Runners prefer pace because it maps directly onto race times and outdoor training targets, which is the gap this converter closes.

Sources & Methodology

Pace is the reciprocal of speed: minutes per mile = 60 ÷ mph, minutes per kilometre = 60 ÷ km/h. The entered speed is converted between the two using the exact factor 1 mile = 1.609344 km, fixed by the 1959 international yard and pound agreement, and metres per second is km/h ÷ 3.6. Incline is not modelled: it changes energy cost without changing belt speed or the pace derived from it.

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Treadmill Pace Converter

What this tool does

Export Report

How the Treadmill Pace Converter works

The formula

Incline changes the effort, not the pace

Where this method is most accurate

What this tool does not do

Disclaimer

Questions

Sources & Methodology

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