Skip to content
Toolvica

Speed, Distance & Time Calculator

Enter any two values to find the third. Supports multiple units for speed and distance.

🚀

Speed, Distance & Time

Enter any two values to calculate the third

Try:

Table of Contents

About

The Speed Calculator helps you determine speed, distance, or time when you know two of the three values. Speed is the rate at which an object covers distance — whether you are driving, cycling, running, or tracking any movement. This tool supports multiple units including kilometers per hour, miles per hour, meters per second, and feet per second.

How to Use the Speed Calculator

The speed calculator uses the fundamental relationship between speed, distance, and time. Enter any two known values, and the calculator finds the third instantly.

Speed = Distance ÷ Time

If you travel 120 km in 2 hours, what is your speed?

  1. Speed = Distance ÷ Time
  2. Speed = 120 km ÷ 2 h
  3. Speed = 60 km/h

Our calculator supports common speed units (km/h, mph, m/s, ft/s) and distance units (km, miles, meters, feet). Select the appropriate units from the dropdowns.

Examples

Road Trip Average

You drive 240 km in 3 hours. Enter 240 km and 3 h. Your average speed is 80 km/h.

Train Commute

Your train travels at 120 km/h for 1.5 hours. Enter 120 km/h and 1.5 h. The distance is 180 km.

Package Delivery

A courier covers 450 km at 90 km/h. Enter 450 km and 90 km/h. Delivery time is 5 hours.

Data Transfer

Your internet downloads at 12 MB/s. Enter 12 MB/s and 3600 s (1 hour). You download 43,200 MB (~42 GB).

Sound Travel

Sound travels at 343 m/s. Enter 343 m/s and 2 s. Sound covers 686 meters in that time.

Marathon Pace

You run 42.2 km in 3 hours 30 minutes. Enter 42.2 km and 210 min. Your pace is 12.06 km/h.

FAQ

What is the formula for speed?
Speed is calculated by dividing distance by time: Speed = Distance ÷ Time. If you need distance, multiply speed by time. If you need time, divide distance by speed.
How do I convert km/h to mph?
To convert km/h to mph, multiply by 0.621371. For example, 100 km/h × 0.621371 = 62.14 mph. Our calculator handles unit conversion automatically.
What units does the calculator support?
The calculator supports speed units (km/h, mph, m/s, ft/s) and distance units (km, miles, meters, feet). You can mix and match any units from the dropdown menus.
How do I calculate average speed?
Average speed is total distance divided by total time. Enter the total distance and total time, and the calculator gives you the average speed regardless of speed variations during the trip.
Can I use this for unit conversions?
Yes! You can use it as a speed converter by selecting the same distance unit for both speed and distance, entering a value, and the calculator will handle the conversion through the speed-distance-time relationship.