math ToolUpdated 2026-09-20
Distance Formula Calculator (2D Coordinates)
The Euclidean distance formula calculates the straight-line distance between two points in a two-dimensional Cartesian coordinate system. Enter points (x1, y1) and (x2, y2) to solve with full mathematical steps.
Frequently Asked Questions
Why is the distance formula derived from the Pythagorean theorem?
The horizontal change Δx and vertical change Δy form the legs of a right triangle. The distance d is the hypotenuse, satisfying d² = Δx² + Δy².
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