Distance Between Points Calculator

Measuring the straight-line gap between two points, whether they sit on a flat plane or in three-dimensional space, is a routine need across navigation, engineering, and urban planning, think of gauging the distance between the 2026 Olympic Village and the main stadium. This calculator returns that measurement quickly and without rounding error creeping in by hand.

The method is the Pythagorean theorem, carried into more than one dimension. For two points in 2D, (x1, y1) and (x2, y2), the distance is D = sqrt((x2 - x1)^2 + (y2 - y1)^2). Add a third axis and the same idea extends: for (x1, y1, z1) and (x2, y2, z2), the formula becomes D = sqrt((x2 - x1)^2 + (y2 - y1)^2 + (z2 - z1)^2).

Keep every coordinate in the same unit; pairing meters with kilometers will throw the answer off entirely. The classic slips in doing this by hand are forgetting to square each difference before adding them, or skipping the final square root, both of which the calculator handles for you. What it can't catch is a mistyped coordinate, so give your inputs a second look before relying on the result.