Running Pace Converter
Convert running pace and speed instantly. Pace (min/km, min/mile) and speed (km/h, mph, m/s) are inversely proportional — going from "5:00 min/km" to "12 km/h" is just `60 / 5 = 12`. This converter handles both forms in one place.
How the conversion works
Pace ↔ Speed are inverses. Internally we use **seconds per meter** as the base. min/km has factor 0.06 sec/m (1 min/km = 60s / 1000m). km/h is `1 / (km/h × 1000/3600)` sec/m, i.e. inverse. Conversions: 5:00 min/km = 12.0 km/h = 7.46 mph = 8:03 min/mile.
When you'll use this converter
- Race-day pacing strategy (marathon, half-marathon, 5K)
- Treadmill speed (mph) → outdoor pace (min/km)
- Comparing track workouts to road runs
- Sub-X minute target pacing (sub-4 hour marathon = 5:41 min/km)
Frequently asked
What pace is a 4-hour marathon?
26.2 miles in 4 hours = 9:09 min/mile = 5:41 min/km = 6.55 mph = 10.55 km/h.
How do I convert treadmill mph to min/mile?
Divide 60 by the mph speed: 6.0 mph = 60/6 = 10 min/mile. 7.5 mph = 60/7.5 = 8 min/mile.
Does this account for elevation gain?
No — this is pure unit conversion. Many running coaches use the rule of thumb "add 10 sec per km per 1% incline" to adjust pace for hills.