Running Speed to Pace Converter: How to Convert Between Every Running Format

Greg Dea
May 4
3 min read

TL;DR

Pace (min/km or min/mile) and speed (m/s or km/h) describe the same effort from different angles. Treadmills and coaches use speed; most runners think in pace. Use the Running Speed to Pace Converter to instantly translate any distance and time into all four formats — no maths required.

If you've ever stared at a speed in km/h and had no idea what that actually feels like to run, you're not alone. Runners think in pace — minutes per kilometre or minutes per mile — but coaches, treadmills, and sports science all speak in speed. Knowing how to move between the two is a practical skill that makes you a smarter, more informed runner.

Why running has two different measurement systems

Pace tells you how long it takes to cover a fixed distance. Speed tells you how much distance you cover in a fixed time. Both describe the same effort — they're just looking at it from opposite directions.

Most recreational runners think in pace. If you've ever said "I run about 6 minutes per kilometre," you're using pace. Coaches and exercise scientists, however, often work in speed — particularly metres per second (m/s) or kilometres per hour (km/h) — because it links directly to physiological measures like Maximum Aerobic Speed (MAS) and VO2max.

The problem is that most runners have never been taught to translate between the two, which means they miss out on training information that could genuinely improve their performance.

The four formats every runner should know

When describing running effort, there are four formats in common use:

Metres per second (m/s) is the unit used in sports science and high-performance coaching. It's the most precise format and the one used to calculate training zones based on MAS testing.
Kilometres per hour (km/h) is what treadmills and cycling computers typically display. A comfortable recreational jog is around 8–10 km/h. Elite marathon pace is around 20 km/h.
Minutes per kilometre (min/km) is the standard pace format for most runners outside the United States. A solid recreational 5km runner might run at 5:30 min/km. A well-trained club runner at 4:00 min/km.
Minutes per mile (min/mile) is the standard in the United States and the UK. The same runners above would be running approximately 8:51 min/mile and 6:26 min/mile respectively.

All four formats describe the same thing. Being able to read any of them gives you a more complete picture of your running.

How the conversion works

The maths behind converting between formats isn't complicated, but it's tedious to do by hand — especially mid-training when you just want an answer.

The core conversions are:

m/s × 3.6 = km/h
km/h ÷ 1.609 = mph
pace (min/km) = 60 ÷ km/h
pace (min/mile) = pace (min/km) × 1.609

So if you ran 150 metres in 35 seconds, your speed is 4.29 m/s — which is 15.43 km/h, or a pace of 3:53 per kilometre. That's a fast sprint effort, comparable to an elite 5km race pace.

Rather than doing this manually every time, use the Running Speed to Pace Converter — type in whatever you know (distance and time, a speed, or a pace) and it returns all four formats instantly.

Where this matters most: MAS testing

One of the most practical applications of speed-to-pace conversion is interpreting a MAS test result.

Maximum Aerobic Speed is the lowest running speed at which you reach your maximum oxygen uptake. It's measured in m/s, and it's used to set precise training intensities — for example, interval sessions at 90% MAS, or aerobic development runs at 75–85% MAS.

If your MAS test result is 1200 metres in 5 minutes, your MAS is 4.0 m/s — which is 14.4 km/h, or a pace of 4:10 per kilometre. Every training target in your program flows from that number.

To calculate your MAS and build sessions around it, use the MAS AI Calculator.

A practical example for coaches

If you're setting training targets for a group of athletes, working in m/s is the most efficient approach. Once you have each athlete's MAS in m/s, you can calculate their interval distances, rectangle dimensions, and aerobic running zones without converting back and forth.

For example, an athlete with a MAS of 4.2 m/s running a 15-second effort at 100% MAS covers 63 metres. At 90% MAS over 3 minutes, they cover 680 metres. These are the numbers that go on the training card — and they all start with knowing the athlete's speed in m/s.

The bottom line

Pace and speed are two sides of the same coin. Being fluent in both — and knowing how to move between them — makes you a better runner, a more informed athlete, and if you coach others, a more precise practitioner.

Use the Running Speed to Pace Converter any time you need to translate a distance and time into usable training information.