Skip to content

Speed Distance Time Calculator

Any one of the three from the other two, in four units.

Work out Speed Distance Time. Any one of the three from the other two, in four units. States its idealisation instead of hiding it.

Written and maintained by Mohit PatelLast checked August 4, 2026How we build these
m
s

Speed (m/s)

10

36 km/h · 22.37 mph

Speed10 m/s
In km/h36
In mph22.37
Distance100 m
Time10 s
Time in minutes0.167

Speed is distance over time, and the three quantities determine each other completely — any two give the third. The conversions matter more than they look: 10 m/s is 36 km/h, and the factor is exactly 3.6 because there are 3,600 seconds in an hour and 1,000 metres in a kilometre.

How the Speed Distance Time Calculator works

Speed is distance over time, and the three quantities determine each other completely — any two give the third. Results come in m/s, km/h and mph, because the conversion is where most of the mistakes actually happen.

Also known as: average speed calculator · how to calculate speed · distance and time calculator · speed formula calculator

Frequently asked questions

How do I calculate speed?

Divide distance by time. 100 metres in 10 seconds is 10 m/s.

How do I convert m/s to km/h?

Multiply by 3.6. The factor is exact: 3,600 seconds in an hour divided by 1,000 metres in a kilometre.

How do I convert m/s to mph?

Multiply by 2.23694. So 10 m/s is 22.37 mph.

Is this average speed or instantaneous speed?

Average. It assumes a constant rate over the whole distance, which is what distance divided by time gives you regardless of how the speed varied along the way.

Put this calculator on your own site

Free to use, on any site, commercial or not. Paste this where you want it to appear. It is a plain iframe, so it works in WordPress, Squarespace, Wix, Webflow, Ghost and anything else that accepts HTML.

The one-line version
<iframe src="https://www.thecalclibrary.com/embed/speed-distance-time-calculator" width="100%" height="640" style="border:1px solid #e2e8f0;border-radius:12px" loading="lazy" title="Speed Distance Time Calculator"></iframe>

The only condition is that the credit line stays visible. It sits inside the frame, so you do not have to do anything to keep it.

Related calculators

Printables & Generators

Velocity Calculator

Final velocity under constant acceleration, with the distance.

Open
Printables & Generators

Acceleration Calculator

Acceleration in m/s² and in g, which is the legible one.

Open
Printables & Generators

Momentum Calculator

Momentum, impulse, and the principle behind crumple zones.

Open