Midpoint calculator

Find the point halfway between two Cartesian coordinates.

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First x coordinate

First y coordinate

More inputs and assumptions

Second x coordinate

Second y coordinate

Answer

…

Midpoint coordinates are the averages of the two x values and the two y values. Distance uses the Pythagorean theorem.

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

Cartesian coordinates only. Latitude and longitude on Earth do not generally have this midpoint or planar distance.

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 Midpoint calculator

Midpoint coordinates are the averages of the two x values and the two y values. Distance uses the Pythagorean theorem.

Cartesian coordinates only. Latitude and longitude on Earth do not generally have this midpoint or planar distance.

Next: Slope calculator

A worked example

With first x coordinate = 2, first y coordinate = 4, second x coordinate = 8, second y coordinate = 10, the midpoint x is 5.

Next: Algebra calculator

Before you use the result

Cartesian coordinates only. Latitude and longitude on Earth do not generally have this midpoint or planar distance.

Example results for first x coordinate

These examples use First y coordinate: 4; Second x coordinate: 8; Second y coordinate: 10. They are reference calculations, not recommended settings.

First x coordinate	Midpoint x
1	4.5
2	5
4	6

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ToolOctopus. “Midpoint calculator.” Updated 2026-09-26. https://tooloctopus.com/midpoint-calculator.

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