Saudi Arabia Coordinate Systems

UTM Coverage

Saudi Arabia is primarily covered by UTM Zones 37N and 38N (WGS84).

Zone 37N covers western regions including Jeddah, Mecca, Medina, and Riyadh.
Zone 38N covers northeastern regions including parts of the Eastern Province.

UTM Zones & Coverage

Zone	EPSG Code	Coverage
37N	32637	Western & Central
38N	32638	Eastern regions

Standard CRS

System	EPSG Code
WGS84 (Geographic)	4326
Web Mercator	3857

Local Reference Systems

Primary Datum: WGS84 (widely adopted)

Modern surveys primarily use WGS84 with UTM projection. Legacy systems may reference older datums - coordinate transformation is recommended for historical data.

Accuracy Notes

WGS84 UTM achieves ±1-2m accuracy for surveying
Zone boundary crossing requires coordinate transformation
Local corrections may be needed for engineering precision surveys

Quick Transformations

Use these buttons to open coordinate transformation with pre-configured settings for Saudi Arabia:

WGS84 → UTM UTM → WGS84 Batch Transform EPSG:32637 (Zone 37N)

Survey Standards & Guidelines

Coordinate Format Conventions

Degrees/Minutes/Seconds: dd°mm'ss.s"
Decimal Degrees: dd.ddddddd
UTM: Zone, Easting (m), Northing (m)

Datum Transformation

Direct WGS84 ↔ UTM transformation does not require additional datum shift. If transforming from historical datums, consult official transformation parameters.

Overview

Saudi Arabia projects commonly use WGS84 geographic coordinates, WGS84 UTM zones 37N and 38N, and official national reference frames for engineering and geodetic work.

National CRS and datum notes

KSA-GRF17 is the modern national geodetic reference frame registered for GIS and geodetic software workflows.
Legacy and project-specific datasets may reference Ain Al Abd 1970, Aramco-related frames, GDMS or MTRF2000.
Official Saudi transformation workflows distinguish WGS84, ARAMCO, GDMS, MTRF-2000 and Ain Al Abd inputs when moving to KSA-GRF17.

UTM zones and EPSG references

Zone	EPSG	Typical use
37N	EPSG:32637	Western and central Saudi Arabia, including many Red Sea and Riyadh-area workflows
38N	EPSG:32638	Eastern Saudi Arabia and Gulf-side workflows