Latitude / Longitude DMS ↔ Decimal Converter
Convert geographic coordinates between decimal degrees (used by GPS, Google Maps, most APIs) and DMS (degrees / minutes / seconds — used in navigation, surveying, geocaching). Google Maps link included.
What powers the Lat/Lng DMS ↔ Decimal Converter
Bidirectional conversion (decimal ↔ DMS)
Per-output copy
Google Maps link with coordinates
Handles negative (S / W) values
Validates lat in -90 to +90, lng in -180 to +180
Why the Lat/Lng DMS ↔ Decimal Converter is different
Browser-native
The Lat/Lng DMS ↔ Decimal Converter runs entirely in your browser. Input is processed locally — never uploaded, never logged, never cached anywhere outside your device.
No artificial limits
No daily quotas, no character ceilings, no "upgrade for more" walls. Every feature is the complete feature — the same on the first use as the thousandth.
Production-grade quality
Built to the same engineering bar as paid SaaS tools — accurate algorithms, audited logic, responsive design and accessibility-tested interactions.
Common use contexts
- GPS / aviation / marine navigation
- Geocaching coordinate entry
- Survey data conversion
- Map plotting
Private and secure
Zero upload
All processing happens in your browser. Input is never transmitted, logged or cached.
Works offline
Once the page loads, the tool runs without an internet connection. No network calls happen during use.
No tracking
No accounts, no cookies for tool state. Only aggregate analytics count visits at the page level.