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🧭 Coordinate Converters

UTM Converter

Convert WGS84 latitude/longitude to UTM zone, easting and northing, and vice versa.

This page explains how the utm converter works, the data and formulas behind it, and how to interpret the result. Coordinate conversions are exact to machine precision; the only source of error is the precision of the input. All formats describe the same location - the notation just differs. The tool is one of 329 free, open tools on JoseFitani for maps and geography. It runs in your browser with no sign-up needed. Use the search field or click the map to drop a pin - the tool uses standard mathematical formulas for each format, all based on the WGS84 datum (EPSG:4326) and returns the result in seconds. Below you'll find a step-by-step guide, real use cases, the methodology, FAQs, and data sources.

Decimal Degrees
48.858400°, 2.294500°
Degrees Minutes Seconds
48° 51' 30.24" N, 2° 17' 40.2" E
UTM
31N 448252E 5411955.03N
MGRS
31UDQ 48252 11955
Plus Code
8FW4V75V+9R

MGRS is derived from the WGS84 ellipsoid series used on this site (accurate to a few metres) — suitable for reference and education, not for survey-grade work. Plus Codes follow the Open Location Code specification.

How to use this tool

1
Enter your input

Type your query, paste coordinates, or click on the map. The tool uses standard mathematical formulas for each format, all based on the WGS84 datum (EPSG:4326) to process your input locally in the browser.

2
View the result

The result appears instantly with the map showing your location. You can adjust by clicking elsewhere or searching a new place.

3
Copy or share

Click Copy to save to clipboard, or Share to send a direct link with the exact inputs.

What people use this tool for

Surveying and fieldwork

Surveyors prefer UTM because eastings and northings are plain metres on a flat grid, which makes distance, area, and bearing calculations simple arithmetic. Recording control points directly in UTM removes a conversion step from the field workflow and matches how total stations think.

Example: A surveyor in Zambia records traverse control points in UTM zone 35S so distances between stations compute directly from the coordinate differences.
Hiking with paper maps

Many topographic map series print a UTM grid over the sheet, letting walkers read a position straight off the paper. Converting that grid reference to latitude and longitude lets the same position be entered into a phone GPS as a backup to map and compass.

Example: A hiker in the Pyrenees reads a UTM grid reference off a 1:25,000 map and converts it to lat/lng for the phone GPS carried as a backup.
Aligning drone survey imagery

Drone mapping software tiles and measures imagery in metres, so flight plans defined in UTM keep every calculation in consistent units. Converting the survey boundary corners from lat/lng to UTM before planning ensures the image products align with the client's metre-based GIS.

Example: A drone operator in Queensland converts a site's corner coordinates to UTM so the orthomosaic aligns with the council's metre-based mapping layers.
Mapping wildlife transects

Ecologists recording observations along transects need positions in the same projection as the park's habitat layers. Logging sightings in UTM keeps every dataset in one consistent metre-based system, so distances between observations compute correctly in analysis.

Example: A researcher in Botswana logs elephant sightings in UTM to match the national park's GIS database, which stores all its layers in that projection.

How it's calculated

UTM divides the Earth into 60 zones of 6° longitude. Each zone uses a Transverse Mercator projection for metric accuracy.

The calculation runs in your browser - no data is sent to our servers. Map tiles come from OpenStreetMap (ODbL license), geocoding uses Nominatim (1 request/second limit), and elevation uses the Open-Elevation API backed by SRTM data. All are free, open services.

All calculations use the WGS84 datum (EPSG:4326), the same as GPS. For other datums (NAD27, NAD83, ETRS89), a separate conversion is needed. The difference is typically under 1 metre - negligible for most uses but important for survey-grade work.

The formulas match those in professional GIS software (QGIS, ArcGIS, Global Mapper), just in a browser-friendly form. For sub-metre accuracy, use professional software with ellipsoidal calculations. Results are shown in multiple units: km and miles for distance, km²/m²/hectares/acres for area, metres and feet for elevation. Conversion factors are exact (1 mile = 1.609344 km), so the only error source is input precision.

Related tools and resources

For more tools in this category, explore the related tools listed below. Each tool includes full documentation, examples and FAQs. Explore related tools in our Coordinates category for complementary functionality. See the Tools index for all 329 tools, or read our blog for in-depth articles on geography and maps.

Frequently asked questions

How many UTM zones are there?

60 longitudinal zones plus polar subdivisions.

What exactly is UTM?

The Universal Transverse Mercator system divides the Earth into 60 zones, each 6 degrees of longitude wide, and projects each zone onto a flat grid measured in metres east and north. Within a single zone, positions behave like ordinary Cartesian coordinates, so distances and areas compute with simple arithmetic instead of spherical trigonometry.

How do I find my UTM zone?

The zone number follows from longitude: take the longitude, add 180, divide by 6, drop the fraction, and add 1. London at about 0 degrees longitude falls in zone 30N; Sydney at about 151 degrees east falls in zone 56S. The converter detects the zone automatically from the coordinates you enter.

Why are southern-hemisphere northings such big numbers?

To keep every northing positive, the UTM system assigns the equator a false northing of 10,000,000 metres in the southern hemisphere, with values decreasing southward from there. A point in southern Africa therefore shows a northing near 7,000,000 rather than a negative number. Northern-hemisphere northings simply count up from zero at the equator.

What is special about UTM zones in Norway and Svalbard?

Zones 32V off Norway and 31X through 37X around Svalbard are drawn with irregular widths to fit the coastlines sensibly, breaking the standard 6-degree rule. These are the only exceptions in the whole system. The converter applies these special zone definitions automatically.

How accurate are distance measurements in UTM?

Scale distortion within a zone peaks at about 1 part in 1,000 near the zone edges, which is roughly 1 metre of error per kilometre measured. That is fine for fieldwork, hiking, and most GIS analysis. Geodesists doing precise surveys apply scale-factor corrections to remove even that small distortion.

Can I convert coordinates from one UTM zone to another?

Always convert via latitude and longitude as the intermediate step, since lat/lng is zone-free. Enter the UTM position, get the lat/lng, then convert that into the target zone. Never mix eastings from two different zones in a single calculation, because their grids do not align.

Does the UTM converter work offline?

Yes. The Transverse Mercator projection mathematics runs entirely in your browser with no server or connection needed. Only place-name search requires the internet; entering coordinates directly works anywhere.

When should I use UTM instead of latitude and longitude?

Use UTM when you are measuring distances or areas, working with metre-based maps, or feeding a GIS that stores data in projected coordinates. Use latitude and longitude for exchanging data globally, for web maps, and whenever positions cross zone boundaries. Many professionals keep both and convert as needed.

Data sources & methodology