PACECALC · iOS App ↗

Pace Converter

One pace in, every unit out. Plus race-time projections across the distances that matter.

Your pace
:/km
YOUR PACE
5:00
min/km·12.0 km/h·7.5 mph
min / km5:00
min / mi8:03
per 400 m2:00
per 800 m4:00
PACE REFERENCE
5K · 10K · HALF · MARATHON
min/kmmin/mikm/h5K10KHalfFull
3:004:5020.015:0030:001:03:182:06:35
3:305:3817.117:3035:001:13:502:27:41
4:006:2615.020:0040:001:24:232:48:47
4:307:1513.322:3045:001:34:563:09:53
5:008:0312.025:0050:001:45:293:30:59
5:308:5110.927:3055:001:56:023:52:04
6:009:3910.030:001:00:002:06:354:13:10
6:3010:289.232:301:05:002:17:084:34:16
7:0011:168.635:001:10:002:27:414:55:22
7:3012:048.037:301:15:002:38:145:16:28
8:0012:527.540:001:20:002:48:475:37:34
8:3013:417.142:301:25:002:59:205:58:39
9:0014:296.745:001:30:003:09:536:19:45
METHODOLOGY

How this calculator works

Pace conversion is exact unit math — no formula, no estimation. Conversions: 1 mile = 1.609344 km. min/mi to min/km divides by 1.609344; speed (mph) to pace (min/mi) is 60 ÷ mph.

FAQ

Frequently asked

How do I convert min/km to min/mile?
Multiply your min/km pace by 1.60934. For example, 5:00/km × 1.609 = 8:03/mi. Our converter does this automatically and also shows km/h, mph, and split times.
What pace should I run for a sub-4-hour marathon?
A sub-4-hour marathon requires an average pace of about 5:41/km or 9:09/mi (roughly 9.4 km/h or 5.8 mph). Use the reference table to find your target pace row.
How do I use the pace reference table?
The table shows equivalent paces across all common formats (min/km, min/mi, km/h, mph) along with projected finish times for standard race distances. Find your pace row to see all conversions at a glance.
What's the difference between pace and speed?
Pace is time per distance (e.g., 5:00/km), while speed is distance per time (e.g., 12 km/h). They're inversely related: faster speed = lower pace number. Runners typically use pace; cyclists and treadmills often use speed.
How do I calculate 400m and 800m split times?
Your 400m split is 40% of your per-km pace, and your 800m split is 80%. For a 5:00/km pace: 400m = 2:00, 800m = 4:00. These are useful for track workouts.