Distance Formula Calculator

Distance is the square root of summed squared differences — the Pythagorean theorem applied per axis. It extends unchanged to 3D and beyond: machine learning measures 'distance' between data points in hundreds of dimensions with the same formula.

This is 'as the crow flies.' City-grid travel follows Manhattan distance (|Δx| + |Δy|), and geographic distance over kilometers must account for the Earth's curvature (haversine formula). Pick the metric that matches the movement.