Grid Reference OS

Get your precise grid reference instantly with Grid Reference OS, the essential tool for UK map reading and outdoor navigation. Whether you're hiking, surveying, geocaching, or planning an expedition, this app displays your exact Ordnance Survey grid reference in real time.

Accuracy at your fingertips: View your location as a 4, 6, 8, or 10-figure grid reference—choose the precision level you need for your activity. Perfect for walkers, outdoor enthusiasts, and professionals who rely on OS maps to pinpoint their exact whereabouts across Great Britain.

Beyond grid references, you'll also see your WGS84 latitude and longitude coordinates, giving you multiple ways to verify and share your location. The app instantly confirms whether your current position falls within the valid UK grid reference range, eliminating guesswork and keeping you oriented.

Whether you're navigating remote terrain or simply curious about your exact coordinates, Grid Reference OS delivers fast, reliable positioning data whenever you need it.