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What is the Midpoint Formula?
The midpoint is the exact center of a line segment — the point equidistant from both endpoints. The midpoint formula takes the average of the x-coordinates and the average of the y-coordinates:
Midpoint M = ((x₁ + x₂) / 2, (y₁ + y₂) / 2)
In 3D space, you simply add the z-coordinate average: M = ((x₁+x₂)/2, (y₁+y₂)/2, (z₁+z₂)/2)
Think of it like finding the middle of a ruler — you add both ends and divide by 2. This formula works for any two points in any coordinate plane.
For slope and angle calculations between those same two points, also try our Slope Calculator.