# The SI unit for speed is ______

The SI unit for speed is m/s.

The formula for speed is speed = distance ÷ time.

Distance is in metres (m), and time is in seconds (s), so the units will be in metres per second (m/s).

The formula can be rearranged in three ways:

• Speed = distance ÷ time
• Distance = speed × time
• Time = distance ÷ speed