A UTM zone is a 6-degree-wide vertical strip of longitude used by the Universal Transverse Mercator projection. Zone 1 covers 180°W to 174°W, and zones increment eastward to Zone 60, which covers 174°E to 180°E. Each zone uses its own Transverse Mercator projection centered on its central meridian.

What do the band letters mean?

The 20 band letters (C through X, skipping I and O) each cover 8 degrees of latitude, except band X which covers 12 degrees (72°N to 84°N). Together with the zone number they form a grid square designator such as 33T or 54S.

What are the special cases for Norway and Svalbard?

Zone 32V is extended westward by 3° and zone 31V is shortened accordingly so that western Norway falls in a single zone. In band X (Svalbard), zones 32X, 34X, and 36X are eliminated and their area merged into 31X, 33X, 35X, and 37X to keep Svalbard landmasses in fewer zones.

What is the central meridian?

Each UTM zone is projected onto a cylinder tangent to the Earth along a central meridian — the longitude that runs through the middle of the zone. The central meridian is the origin of easting coordinates within that zone (assigned a false easting of 500,000 m).

How do I get the EPSG code for my zone?

For the northern hemisphere, the EPSG code is 32600 + zone number (e.g. zone 33 north = EPSG:32633). For the southern hemisphere it is 32700 + zone number (e.g. zone 33 south = EPSG:32733). These codes are used directly in GIS software to set the coordinate reference system.

What decimal format should I use for coordinates?

Enter coordinates in decimal degrees: positive for North and East, negative for South and West. For example, New York City is approximately 40.7128 latitude, -74.0060 longitude. Degrees-minutes-seconds must be converted to decimal first.

UTM Zone Finder

Name: UTM Zone Finder
Availability: InStock
Author: Nham Vu

Enter a latitude/longitude coordinate to instantly find its UTM zone number, band letter, hemisphere, and central meridian.

Coordinate Input

Latitude (−90 to 90)

Longitude (−180 to 180)

Quick examples

Enter coordinates and click Find UTM Zone

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Summary

Enter a latitude/longitude coordinate to instantly find its UTM zone number, band letter, hemisphere, and central meridian.

How it works

Enter a decimal latitude (−90 to 90) and longitude (−180 to 180).
The zone number is computed as floor((longitude + 180) / 6) + 1.
The band letter is determined by the latitude using the standard 20-band table (C–X).
Special cases for Norway (zone 32V) and Svalbard (zones 31X–37X) are handled automatically.
The central meridian is calculated as (zone − 1) × 6 − 177 degrees.
Results show zone, band, full designator, hemisphere, central meridian, and EPSG code.

Use cases

Find which UTM zone a field survey site falls in before fieldwork.
Configure GIS software (QGIS, ArcGIS) with the correct projection EPSG code.
Verify UTM zone assignments when converting coordinate datasets.
Determine the correct military grid reference zone for a location.
Check if two sites share a zone for consistent map projections.
Identify the hemisphere setting needed for GPS and surveying instruments.
Resolve coordinate discrepancies between datasheets using different zones.
Teach UTM concepts with instant lookup for any location on Earth.

Frequently Asked Questions

Last updated: 2026-06-24 · Reviewed by Nham Vu