Distance Calculator 3D

The 3D distance formula extends the Pythagorean theorem into three dimensions. The distance between two points (x₁,y₁,z₁) and (x₂,y₂,z₂) is the square root of the sum of squared differences in each coordinate

The calculator uses the standard published formula for distance 3d. Results are accurate to the precision of the inputs you provide. For financial, medical, or legal decisions, always verify with a qualified professional.

This calculator works with inches. You can enter values in the units shown — the calculator handles all conversions internally.

The core formula is: d = √((x₂−x₁)² + (y₂−y₁)² + (z₂−z₁)²). Each step in the calculation is shown so you can verify the result manually.