Distance Calculator accuracy and testing

Formula source

• The distance formula is derived from the Pythagorean Theorem ($a^2 + b^2 = c^2$). **2D Formula:** $d = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2}$ **3D Formula:** $d = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2 + (z_2 - z_1)^2}$

Test cases

Known limitations

• This page documents the checked-in calculator logic and does not certify results for every real-world edge case.
• Use the result as a planning estimate unless the calculator page states a stricter purpose.

Assumptions

• Coordinates are interpreted in the same unit system across every axis.
• This calculator returns straight-line Euclidean distance, not travel distance along roads or paths.
• In 2D mode, z-values are ignored.

Unit handling

• Dimensions accepts one of the configured options.
• x1 accepts numeric values.
• y1 accepts numeric values.
• z1 accepts numeric values.
• x2 accepts numeric values.
• y2 accepts numeric values.
• z2 accepts numeric values.

Rounding rules

• Number displays use up to 2 decimal places in the calculator UI.

Version history

Change log