Enter a value and pick min/km, min/mi, km/h, or mph, and the tool converts it to the other pace and speed units instantly, including swim/row pace.
A pace of 5:00 per kilometer is about 8:03 per mile (≈12 km/h or 7.46 mph).
Speed and pace are inverses: speed (km/h) = 60 ÷ pace (min/km). A 6:00/km pace equals 10 km/h.
A 42.195 km marathon under 4 hours needs about 5:41 per km (9:09 per mile).