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About the Distance Calculator
This calculator computes the straight-line distance between two points in 2D or 3D space. You enter the coordinates of both points and get the distance as a single numeric result. It also shows the working steps so you can verify each part of the answer.
The calculator uses the standard Euclidean distance formula: d = √((x₂ − x₁)² + (y₂ − y₁)²). For 3D points it adds (z₂ − z₁)² under the same square root. You enter the x and y values for both points, plus z values for 3D problems. One practical tip: keep all coordinates in the same unit system so the result matches your measurements.
- Select 2D or 3D mode.
- Enter the coordinates for the first point, then the second point.
- Read the distance from the results field and copy it if needed.