Speed Calculator

Calculate speed, distance, or time using the formula d = st.

Speed
0 km/h

Formula Used

Speed = Distance / Time

* Note: This calculator assumes constant speed. Units used are metric (km/h).

Understanding the Relationship Between Speed, Distance, and Time

Speed, distance, and time are interconnected. If you know any two of these variables, you can calculate the third. The standard formula used is:

Distance = Speed × Time

Common Calculations

Calculate Speed

To find out how fast you traveled.

Speed = Distance / Time

Example: You drive 150km in 3 hours. Speed = 150 / 3 = 50 km/h.

Calculate Distance

To find out how far you traveled.

Distance = Speed × Time

Example: You run at 10 km/h for 0.5 hours. Distance = 10 × 0.5 = 5 km.

Calculate Time

To find out how long the trip takes.

Time = Distance / Speed

Example: You need to travel 200km at 80km/h. Time = 200 / 80 = 2.5 hours.