Converter
Speed & Pace

Speed & Pace Converters

Convert between km/h, mph, m/s, and knots. Plus running pace tools and a travel time estimator for trip planning.

Speed Conversions

Pace Conversions

Frequently Asked Questions

What is the difference between speed and pace?

Speed is distance per time (e.g., km/h). Pace is time per distance (e.g., min/km). They are inverses: speed = 60 ÷ pace.

Which countries use mph?

The US, UK (road signs), Liberia, and Myanmar use mph. Most other countries use km/h.

What is a knot?

A knot is one nautical mile per hour (1.852 km/h). Used in aviation and maritime navigation.

How fast is Mach 1?

Mach 1 ≈ 343 m/s ≈ 1,235 km/h ≈ 767 mph at sea level and 20°C.

What is the speed of light?

Approximately 299,792,458 m/s ≈ 1,079,252,849 km/h. Nothing can travel faster.

How do I convert pace to speed?

Speed (km/h) = 60 ÷ pace (min/km). Speed (mph) = 60 ÷ pace (min/mile).