Processed locally — your file never leaves your device
Coordinate Converter
Convert coordinates between decimal degrees, DMS, degrees-decimal-minutes and UTM — paste text, entirely in your browser.
How it works
- Paste one coordinate per line — decimal degrees, DMS, degrees-decimal-minutes and UTM can be mixed.
- Choose the output format.
- Click Convert — each line is converted locally, and any line that can't be recognized is reported instead of guessed at.
- Copy or download the converted list.
Frequently asked questions
- Are my coordinates sent anywhere?
- No. Every conversion runs locally in your browser.
- Which formats are supported?
- Decimal degrees (40.7128, -74.0060), degrees/minutes/seconds (40°42'46"N 74°0'22"W), degrees-decimal-minutes (40°42.77'N 74°0.36'W), and UTM (18T 583960 4507523).
- How is the input format detected?
- Each line is checked independently against every supported format's pattern, so you can paste a mixed list — lines that don't match anything are reported, not silently dropped.
- How accurate is the UTM conversion?
- It uses the standard WGS84 ellipsoid transverse Mercator projection, accurate to within about a meter for typical use — not intended for surveying-grade work.