Speed calculator

Average speed = distance ÷ elapsed time.

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Speed calculator processes your input in this browser. Inputs and results are excluded from analytics. Recent tools save tool names, visit counts and last-visit times. Saved tools store only their names. Draft saving is optional and stays on this device; delete saved text with the draft controls. Loading text from a URL is optional and contacts that server; its URL and your IP address are visible to the server. An optional “Use in” action keeps a handoff in this tab. The next tool removes it on arrival and ignores it if more than a minute has passed.

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Distance

Elapsed time

Answer

…

Average speed = distance ÷ elapsed time.

More results

Precision and calculation record

Decimal places in numeric results and text downloads

Rounding changes displayed numbers, not the calculation. Text, fractions, matrices and CSV schedules keep their own formatting. Automatic keeps up to 12 significant digits, with money shown to cents where applicable.

Step-by-step calculation

Inputs are substituted below. Each line evaluates the next operation; intermediate values are displayed to 12 significant digits while the calculation uses full precision.

Saved scenario

Save the current answer, then change an input to compare. This clears when you leave.

Formula and assumptions

Use a single distance unit and time unit. Include stops in time if you want overall average speed.

Automatic precision shows numbers to 12 significant digits. Thousands separators such as 1,000 are accepted; use a dot for decimals.

Scratch calculator

Check another calculation

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Keyboard shortcuts

Updated 2026-09-26

Using Speed calculator

Average speed = distance ÷ elapsed time.

Use a single distance unit and time unit. Include stops in time if you want overall average speed.

Next: Torque calculator

A worked example

With distance = 150, elapsed time = 3, the average speed is 50.

Next: Acceleration calculator

Before you use the result

Use a single distance unit and time unit. Include stops in time if you want overall average speed.

Example results for distance

These examples use Elapsed time: 3. They are reference calculations, not recommended settings.

Distance	Average speed
75	25
150	50
300	100

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ToolOctopus. “Speed calculator.” Updated 2026-09-26. https://tooloctopus.com/speed-calculator.

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