How to convert min/km to min/mile
Metric and imperial paces are the same effort described in different units, so converting between them is one multiplication — as long as you work in seconds first. Here is the exact factor, worked examples in both directions, a ready-made conversion table, and the decimal mistake that trips most people up.
Open the Running Pace calculatorSkip the arithmetic: the Running pace calculator shows any pace in both min/km and min/mile at once, so you can read the conversion straight off — both ways.
The conversion
Pace is time per unit of distance, so it scales directly with the distance factor between the two units. A mile is longer than a kilometre, so it takes more time to cover one mile than one kilometre — which means the min/mile number is always the larger of the two. The exact relationship is:
- min/km
- pace in minutes and seconds to cover one kilometre
- min/mile
- pace in minutes and seconds to cover one mile
- 1.609344
- the number of kilometres in one mile — exact, not rounded
- seconds
- always convert the pace to total seconds before multiplying or dividing
The factor is the same as the distance ratio because pace is time per distance: if one mile is 1.609344 times as far as one kilometre, then holding the same speed takes 1.609344 times as long per mile. The only rule to remember is to run the multiplication on seconds, not on the mm:ss display.
Conversion table
The quickest reference is a lookup. Each row takes a round min/km pace, converts it to seconds, multiplies by 1.609344, and converts back to min/mile:
| Pace (min/km) | Seconds/km | Pace (min/mile) |
|---|---|---|
| 4:00 | 240 | 6:26 |
| 4:30 | 270 | 7:14 |
| 5:00 | 300 | 8:03 |
| 5:30 | 330 | 8:51 |
| 6:00 | 360 | 9:39 |
| 6:30 | 390 | 10:28 |
| 7:00 | 420 | 11:16 |
To go the other way, read the table in reverse or divide the seconds-per-mile value by 1.609344. The gap between the two columns widens as pace slows, because you are multiplying a larger number by the same factor each time.
Worked examples
Every conversion is the same three steps: to seconds, multiply or divide, back to mm:ss.
-
5:00 min/km → min/mile. Convert:
5:00 = 300 s. Multiply:300 × 1.609344 = 482.8 s. Back to mm:ss:482.8 s = 8:03 min/mile. -
4:30 min/km → min/mile. Convert:
4:30 = 270 s. Multiply:270 × 1.609344 = 434.5 s. Back to mm:ss:434.5 s = 7:14 min/mile. -
6:00 min/mile → min/km. Convert:
6:00 = 360 s. Divide:360 ÷ 1.609344 = 223.7 s. Back to mm:ss:223.7 s = 3:44 min/km.
To turn a decimal number of seconds back into mm:ss, the whole minutes are the seconds divided by
60, and the remaining seconds are what is left over: 482.8 / 60 = 8 minutes with
482.8 − 480 = 2.8 s left, which rounds to 8:03.
How do I convert min/km to min/mile?
In one sentence: convert the pace to seconds per kilometre, multiply by 1.609344, then convert the result back to minutes and seconds. The multiplication is trivial; the two conversions to and from seconds are where the accuracy lives. Never multiply the clock reading directly — that is the source of almost every wrong answer, as the next section shows.
The common mistake
The most common error is multiplying the mm:ss reading as if it were a decimal.
Taking 5:30 and computing 5.30 × 1.609344 = 8.53 is wrong,
because 5:30 means five minutes and thirty seconds — that is
5.5 minutes, or 330 seconds. Convert to seconds first:
330 × 1.609344 = 531.1 s = 8:51 min/mile, not 8:53. The mistake grows with
the seconds value, so a pace like 5:45 goes wrong by even more.
There is nothing to round in the constant itself: 1 mile is defined as exactly 1.609344 km, so the conversion is exact and the only rounding happens when you display the final pace to the nearest second. Our pace calculator does this both ways for you and shows min/km and min/mile side by side.
Frequently asked questions
How do I convert min/km to min/mile?
Convert the pace to seconds per kilometre, multiply by 1.609344, then convert back to minutes and seconds. A 5:00 min/km pace is 300 s; 300 × 1.609344 = 482.8 s, which is 8:03 min/mile.
Why can't I just multiply 5:30 by 1.609344?
Because 5:30 is not 5.30 in decimal minutes — it is 5.5 minutes, or 330 seconds. Multiplying the mm:ss reading directly treats the seconds as hundredths and gives the wrong answer. Convert to total seconds first.
Is 1 mile exactly 1.609344 km?
Yes. Under the 1959 international yard and pound agreement, 1 mile is defined as exactly 1.609344 kilometres, so the conversion is exact rather than approximate.
Related tools and reading
Running pace calculator
Enter any two of time, distance and pace and read the third in both min/km and min/mile.
ReadMarathon pace chart by finish time
The pace you need to hold for every common marathon target, from 3:00 to 5:00.
Sources
- NIST, Unit conversions — 1 mile = 1.609344 km exactly, from the 1959 international yard and pound agreement (BIPM SI base units). Checked 24 Aug 2026.
- World Athletics, Competition and Technical Rules — standard road-race distances used when converting race paces. Checked 24 Aug 2026.