MAIDENHEAD GRID SYSTEM // LIVE

ARRL Grid Distance Calculator

Compute great-circle distance and true bearing between Maidenhead grid locators. Supports 2–10 character precision. Multi-target batch calculation with ODX highlighting and interactive map plotting.

Grid Parameters
Reference Grid (Station 1)
Maidenhead Locator 2–10 chars
Target Grids (Station 2+)
Grid locators comma-separated
Supports 2, 4, 6, 8, or 10-character Maidenhead locators.
Duplicates and self-references are automatically removed.
Display Units
Enter a reference grid and one or more target grids, then click Calculate.
Supports 2/4/6/8/10-char Maidenhead locators