Coordinate Converter
Paste GPS coordinates in any notation and instantly convert between decimal degrees (DD), degrees-minutes-seconds (DMS), and degrees-decimal-minutes (DDM). Everything runs in your browser — nothing is uploaded.
How to use it
Type or paste a coordinate pair into the box. The converter accepts decimal degrees (40.7128, -74.0060), DMS with symbols or spaces (40°42'46"N 74°00'22"W), and degrees-decimal-minutes. As soon as it recognises a valid latitude and longitude, all three formats appear below — tap the copy icon to grab any of them. Press Use my location to fill in your current position.
DD, DMS and DDM — what's the difference?
All three describe the same point; they just split the angle differently. Decimal degrees keep it as a single number and are what apps, links and APIs expect. DMS breaks each degree into 60 minutes and each minute into 60 seconds, the form you see on paper and nautical charts. DDM keeps the degrees and minutes but writes the seconds as a fraction of a minute, which marine GPS units favour. For a deeper walkthrough, see decimal degrees vs DMS.
Frequently asked questions
What is the difference between DD, DMS, and DDM?
Decimal Degrees (DD) writes a coordinate as one number, e.g. 40.7128. Degrees-Minutes-Seconds (DMS) splits it into 40°42'46", and Degrees-Decimal-Minutes (DDM) uses 40°42.767'. They are three notations for the same point.
How do I convert DMS to decimal degrees?
decimal = degrees + minutes/60 + seconds/3600. For 40°42'46": 40 + 42/60 + 46/3600 = 40.7128. Use S or W to make the result negative. Or just paste the DMS above and read the DD output.
Is this coordinate converter free?
Yes — it runs entirely in your browser with no account and no upload. Your coordinates are never sent to a server.
Which format should I use?
Decimal degrees for apps, links, spreadsheets, and code; DMS for paper maps and nautical or aviation charts. DDM is common in marine GPS units.