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# Midpoint calculator

Find the midpoint, distance, slope, and line equation between two points in 2D or 3D, plus the m:n section point and the opposite endpoint.

Enter two points to find their midpoint.

The midpoint is (A + B) / 2 on each axis, and the other formulas fall out of it: the missing endpoint is 2·M − A, the section point at m:n is (n·A + m·B) / (m + n), and the distance takes a square root, which is why it is the one number here that usually cannot be written as a clean fraction. A vertical pair has an undefined slope and prints its line as x = c instead.
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## More unit & math tools

- [Unit converter](/converters/units)
- [Fraction calculator](/converters/fractions)
[All unit & math tools](/converters)

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