Speed Distance Time Calculator

Calculate speed, distance, or time using the basic motion formula.

Distance (km)

Time (hours)

hrs

Speed (km/h) — or calculate

km/h

Results

Speed50

Distance0

Time (hours)0

Speed (m/s)13.89

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What is Speed Distance Time?

The Speed Distance Time formula (v = d/t) is one of the most fundamental equations in physics. It relates how fast something moves, how far it goes, and how long it takes.

Formula

Speed = Distance / Time Distance = Speed × Time Time = Distance / Speed

Unit conversions: 1 km/h = 0.2778 m/s 1 m/s = 3.6 km/h 1 mile/h = 1.609 km/h

How to use this Speed Distance Time Calculator?

1. Enter distance and time to find speed. 2. Or enter speed and time to find distance. 3. Or enter distance and speed to find time. 4. Results include m/s conversion.

Frequently asked questions

How to convert km/h to m/s?

Multiply by 5/18 (or divide by 3.6). Example: 72 km/h = 72 × 5/18 = 20 m/s.

What is the speed of light?

Speed of light = 3 × 10⁸ m/s = 1,080,000,000 km/h. Nothing can travel faster.

What is average speed vs instantaneous speed?

Average speed = total distance / total time. Instantaneous speed is the speed at a specific moment (what your speedometer shows).

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