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Chicago O'Hare International Airport Coordinates

IL, US · Elevation 207m

Quick answer: Chicago O'Hare International Airport is located at 41.978600, -87.904800 (N, W).

Different tools require different formats — Garmin devices default to DDM, military maps use MGRS, topo maps use UTM, and web apps expect Decimal Degrees. Copy whichever format your device or application needs. Click any format abbreviation to learn how it works.

All Coordinate Formats

DD

Decimal Degrees

41.978600, -87.904800
DMS

Degrees Minutes Seconds

41°58'42.96"N 87°54'17.28"W
DDM

Degrees Decimal Minutes

41°58.7160'N 87°54.2880'W
UTM

Universal Transverse Mercator

16T 425041 4647796
MGRS

Military Grid Reference

16TDM2504147796
Geohash

Geohash Encoding

dp3qz9vxj
Plus Code

Open Location Code

86HJX3HW+C3

Map Location

Map data © OpenStreetMap contributors

Antipodal Point

The point on the exact opposite side of Earth from Chicago O'Hare International Airport. If you drilled straight through the planet's center, you would emerge here.

Antipodal coordinates

-41.978600, -87.904800

Hemisphere: S, W

DD

Decimal Degrees

-41.978600, -87.904800
DMS

Degrees Minutes Seconds

41°58'42.96"S 87°54'17.28"W
DDM

Degrees Decimal Minutes

41°58.7160'S 87°54.2880'W
UTM

Universal Transverse Mercator

16G 425041 5352204
MGRS

Military Grid Reference

16GDU2504152204
Geohash

Geohash Encoding

6093pwj8v
Plus Code

Open Location Code

46CJ23CW+CM

MGRS Decoded

MGRS encodes location as a nested hierarchy — zone, band, grid square, and offsets. Here is what each component of 16TDM2504147796 means.

Component Value Meaning
UTM Zone 16 One of 60 vertical slices of Earth (6° wide each). Zone 16 runs -90° to -84° longitude.
Latitude Band T One of 20 horizontal bands (8° tall each), lettered C–X (skipping I and O). Indicates the general latitude region.
100 km Square DM A 100 × 100 km grid square within the zone/band. Column letter D (west–east) and row letter M (south–north).
Easting 25041 Distance east within the 100 km square. 5-digit value = 10 m resolution. Multiply by 1 to get meters.
Northing 47796 Distance north within the 100 km square. Same resolution as easting (10 m).

Geohash Precision

A geohash encodes coordinates by subdividing the Earth into progressively smaller cells. Each extra character roughly halves the cell area. The table below shows Chicago O'Hare International Airport's geohash at every precision level alongside the bounding box each level represents.

Length Geohash Cell Size
1
d
≈ 5,000 × 5,000 km
2
dp
≈ 1,250 × 625 km
3
dp3
≈ 156 × 156 km
4
dp3q
≈ 39 × 20 km
5
dp3qz
≈ 4.9 × 4.9 km
6
dp3qz9
≈ 1.2 km × 610 m
7
dp3qz9v
≈ 153 × 153 m
8
dp3qz9vx
≈ 38 × 19 m
9
dp3qz9vxj
≈ 4.8 × 4.8 m

Precision 9 (highlighted) is the default and provides sub-5-metre accuracy for most applications.

About Chicago O'Hare International Airport

https://en.wikipedia.org/wiki/O'Hare_International_Airport

Live Converter

The coordinates above are fixed to this landmark. Use this converter to enter any other coordinates — such as a nearby trailhead, parking area, or a location you want to compare — and get all 7 formats instantly.

DD

41.978600, -87.904800

DMS

41°58'42.96"N 87°54'17.28"W

DDM

41°58.7160'N 87°54.2880'W

UTM

16T 425041 4647796

MGRS

16TDM2504147796

GH

dp3qz9vxj

OLC

86HJX3HW+C3

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