Speed Calculator
Solve for Speed, Distance, or Time instantly.
Calculated speed
mph
Understanding Speed Calculation
Speed is a fundamental concept in physics that measures how fast an object is moving. It is defined as the scalar quantity that refers to "how fast an object is moving." Speed can be thought of as the rate at which an object covers distance.
The Formulas
- Speed (s)= Distance ÷ Time
- Distance (d)= Speed × Time
- Time (t)= Distance ÷ Speed
Common Units
- mph (miles per hour): Standard speed unit in the US and UK.
- km/h (kilometers per hour): Global standard for road speed.
- m/s (meters per second): The SI unit used in scientific calculations.
- Knots: Used in maritime and aviation (1 knot = 1.15 mph).
FAQ
What is the formula for speed?
The basic formula for average speed is Speed = Distance ÷ Time. For finding distance, use Distance = Speed × Time. For time, use Time = Distance ÷ Speed.
What is the difference between speed and velocity?
Speed is a scalar quantity, meaning it only has magnitude (e.g., 60 mph). Velocity is a vector quantity, meaning it has both magnitude and direction (e.g., 60 mph North).
How do I convert mph to km/h?
To convert mph (miles per hour) to km/h (kilometers per hour), multiply by 1.60934. For example, 60 mph × 1.609 ≈ 96.6 km/h.
Related Calculators
Explore more calculators to solve your calculation needs
