Distance calculator

Distance between two planar points = √((x₂ − x₁)² + (y₂ − y₁)²).

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First x

Second x

More inputs and assumptions

First y

Second y

Answer

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Distance between two planar points = √((x₂ − x₁)² + (y₂ − y₁)²).

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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

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Formula and assumptions

Use Cartesian coordinates in matching units. This is a straight-line distance in a plane, not a road route or distance across Earth.

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

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Updated 2026-09-26

Using Distance calculator

Distance between two planar points = √((x₂ − x₁)² + (y₂ − y₁)²).

Use Cartesian coordinates in matching units. This is a straight-line distance in a plane, not a road route or distance across Earth.

Next: Basic calculator

A worked example

With first x = 0, second x = 3, first y = 0, second y = 4, the distance is 5.

Before you use the result

Use Cartesian coordinates in matching units. This is a straight-line distance in a plane, not a road route or distance across Earth.

Example results for second x

These examples use First x: 0; First y: 0; Second y: 4. They are reference calculations, not recommended settings.

Second x	Distance
1.5	4.27200187266
3	5
6	7.21110255093

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ToolOctopus. “Distance calculator.” Updated 2026-09-26. https://tooloctopus.com/distance-calculator.

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