Base Unit Method

Category-Specific Formula

Speed vs Velocity

Speed is how fast something moves (scalar), while velocity includes direction (vector). In everyday usage, these terms are often used interchangeably.

Transportation Units

Different transportation modes use different speed units: cars use mph/km/h, aircraft and ships use knots, scientists use m/s. Each unit suits its specific application.

Maritime and Aviation

Knots (nautical miles per hour) are standard for ships and aircraft because they relate directly to latitude and longitude navigation. One nautical mile equals one minute of latitude.

Physics and Engineering

Meters per second (m/s) is the SI unit for speed, commonly used in physics calculations, engineering applications, and scientific measurements.