UTM Converter
Convert between latitude/longitude and UTM coordinates, both ways, right in your browser. Your coordinates stay on your device.
Coordinates you enter are converted locally in your browser and are never uploaded; the lat/long and UTM values you type are processed on your device and not stored on a server.
Want to see the point? Open the Coordinate Map Viewer.
About UTM Converter
This UTM converter translates coordinates between latitude/longitude and the Universal Transverse Mercator grid without leaving your browser. Type a lat/long pair to read the UTM zone number, hemisphere, latitude band letter, easting and northing in metres, or enter a zone, hemisphere, easting and northing to get the latitude and longitude back. UTM splits the world into sixty six-degree zones and expresses each point as a flat metric easting and northing, which is why surveyors, GIS analysts, drone pilots and field crews reach for it when metres, not degrees, are what matter. All conversions use the WGS84 datum, matching modern GPS receivers and web maps, and run entirely on your device, so the coordinates you enter are processed locally and never uploaded.
Features
- Convert latitude/longitude to a UTM coordinate, and UTM back to lat/long, in one tool
- Reports the zone number, hemisphere (N/S), latitude band letter, easting and northing
- Applies the 500,000 m false easting and southern-hemisphere 10,000,000 m false northing automatically
- Handles the Norway and Svalbard zone-width exceptions when picking a zone
- Accepts a hemisphere as N/S or infers it from the latitude band letter you enter
- Validates latitude against the UTM domain and flags the polar regions clearly
- Copy any value with one click and open the point on the coordinate map
- Uses the WGS84 datum, matching modern GPS and web-map coordinates
How to use the UTM Converter
- Pick a direction: Lat/Lng → UTM or UTM → Lat/Lng.
- Enter a latitude and longitude, or a zone, hemisphere, easting and northing.
- Read the UTM zone, band, easting and northing, or the recovered lat/long, in the results.
- Copy any value, or follow "View on the map" to plot the point.
Example
Input
48.8584, 2.2945
Output
31U 448252 5411955
Zone 31, band U, hemisphere N
The Eiffel Tower in UTM zone 31U on the WGS84 datum, easting and northing in metres.
Common errors & troubleshooting
- A latitude near the poles will not convert to UTM. — UTM is defined only between 80°S and 84°N. For points beyond that band, use a UPS-based polar grid instead of UTM.
- The recovered point lands in the wrong hemisphere. — Set the hemisphere to N or S explicitly. A northing near 5,411,955 means north; the same value with the 10,000,000 m false northing means south, so the flag matters.
- Reverse conversion gives a latitude or longitude far from what you expect. — Check the zone number: an easting and northing are only meaningful within their own zone, so a wrong zone shifts the point by hundreds of kilometres.
Frequently asked questions
- What is a UTM coordinate?
- UTM, the Universal Transverse Mercator system, names a point by a zone number (1–60), a hemisphere or latitude band, and an easting and northing measured in metres, for example 31U 448252 5411955. Because it is metric and planar, it is convenient for measuring distances and areas on a map.
- How do I convert latitude and longitude to UTM?
- Choose Lat/Lng → UTM, type the latitude and longitude such as 48.8584, 2.2945, and the converter returns the zone number, band letter, hemisphere, and the easting and northing in metres on the WGS84 datum.
- What do the UTM easting and northing values mean?
- Easting is the metres east of a zone's central meridian, offset by a 500,000 m false easting so it never goes negative. Northing is metres from the equator; in the southern hemisphere a 10,000,000 m false northing is added so it also stays positive.
- What is the UTM latitude band letter?
- The band letter (C through X, skipping I and O) marks an 8°-tall row of latitude, with X widened to reach 84°N. It pins down the hemisphere and rough latitude, so 31U and 31M are the same zone in different rows of the grid.
- Which datum does this UTM converter use?
- It uses WGS84, the same datum as GPS receivers and web maps like Google Maps and OpenStreetMap. If your source data uses a different local datum, convert it to WGS84 first to avoid an offset that can reach tens of metres.
- Are the coordinates I enter into this UTM tool uploaded?
- No. The lat long to utm and utm to lat long conversions run entirely in your browser, so the coordinates you enter are processed on your device and are never sent to a server.
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