SPEED CONVERTER

Convert Speed Units
Instantly

Convert between KM/H, MPH, M/S, and Knots. Type in any field and see all conversions at once.

KM/H (Kilometers per hour)

MPH (Miles per hour)

M/S (Meters per second)

Knots (Nautical miles per hour)

1 KM/H= 0.621 MPH

1 MPH= 1.609 KM/H

1 KM/H= 0.278 M/S

1 M/S= 3.6 KM/H

1 Knot= 1.852 KM/H

1 MPH= 0.869 Knots

Frequently Asked Questions

How do I convert KM/H to MPH?

Multiply the KM/H value by 0.621371. For example, 100 KM/H = 62.14 MPH.

What is the difference between M/S and KM/H?

1 M/S equals 3.6 KM/H. M/S is the SI unit of speed, while KM/H is commonly used for road speed.

What are Knots used for?

Knots are used in aviation and maritime contexts. 1 Knot equals 1 nautical mile per hour (1.852 KM/H).

Which speed unit should I use?

Use KM/H for most countries, MPH for USA/UK roads, M/S for scientific contexts, and Knots for aviation/maritime.