HAM Distance: Grid & Callsign

About this app

Calculate the distance between any two amateur radio stations in seconds. Mircules HAM Distance is the essential tool for ham radio operators who want to know exactly how far their signal traveled. Enter callsigns, Maidenhead grid locators, or coordinates and get the great-circle distance instantly. THREE INPUT METHODS • Callsign: Enter any amateur callsign to resolve it to coordinates via QRZ.com or HamQTH.com • Maidenhead Grid: Enter grid locators from 2 to 8 characters • Lat/Lon: Enter decimal coordinates directly SAVE YOUR CALCULATIONS Save distance pairs with custom labels like "Home to repeater" or "Field Day DX." Track your contacts over time and review them anytime. MAP VISUALIZATION Plot your saved distances on an interactive map. Filter by week, month, or year, or view all contacts at once. See markers and distance lines for every pair. STATISTICS See your total contacts, longest and shortest distance, average distance, and a distribution chart showing how your contacts break down by range. ICLOUD SYNC Your saved pairs sync automatically across all your devices via iCloud. No account needed — just sign into iCloud and your data is there. HOME SCREEN WIDGETS Add widgets to your home screen to see your latest distance calculation and stats at a glance. NO ACCOUNT REQUIRED The calculator works immediately. Configure your QRZ.com or HamQTH.com credentials and start calculating. Your data stays on your device and in your private iCloud. BUILT FOR HAM RADIO Designed specifically for amateur radio operators. Supports the Maidenhead Locator System, integrates with QRZ.com and HamQTH.com, and uses the Haversine formula for accurate great-circle distances. Free to use. No ads. Tips welcome. 73 de Mircules

Completely rebuilt from the ground up! NEW IN 5.0 • Native iOS experience — faster, smoother, and designed for iPhone • iCloud sync — your saved pairs sync across devices automatically, no account needed • Apple Maps — interactive map with markers and distance lines for every pair • Home screen widgets — see your latest calculation at a glance • Statistics dashboard — total contacts, longest/shortest distance, average, and distribution chart • Tip jar — support development if you find the app useful IMPROVED • Faster callsign lookups with local caching • Better Maidenhead grid locator support (2-8 characters) • Cleaner calculator interface with persistent input state • Secure credential storage in iOS Keychain This is a major rewrite. If you run into any issues, please reach out at info@mircules.com. 73!

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1. First observed Sep 29, 2026 · 1:04 AM Free