Amateur Radio Navigation

Grid Square & Bearing Calculator

Maidenhead locator, great-circle distance, short path and long path — designed for HF and VHF/UHF operators.

📍 Station locators

MY QTH · GRID

DX STATION · GRID

SHORT PATH—

LONG PATH—

DISTANCE · SP / LP—

🧭 Antenna bearing

● SP● LP

True bearing

🌍 Great-circle paths · Maidenhead grid

Grid overlay adapts to map zoom · JN → JN76 → JN76LI

Select MY QTH or DX QTH, then tap anywhere on the map. Grid precision: 6 characters.

● Animated Short Path signal · Long Path bearing remains available on the compass

🔁 Coordinates → Maidenhead

ⓘ Locator Precision Guide

Approximate dimensions at your station latitude. Every bearing and distance uses the center of the entered grid square.

Grid	Area size	Max offset*

*Maximum approximate distance from grid center to a corner. The actual station may be anywhere inside the grid. Two coarse locators can compound distance uncertainty.

⚠️ For VHF/UHF, use at least a 6-character locator when possible.