Home / Landmarks / Seattle–Tacoma International Airport

Seattle–Tacoma International Airport Coordinates

WA, US · Elevation 132m

Quick answer: Seattle–Tacoma International Airport is located at 47.447943, -122.310276 (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

47.447943, -122.310276
DMS

Degrees Minutes Seconds

47°26'52.59"N 122°18'36.99"W
DDM

Degrees Decimal Minutes

47°26.8766'N 122°18.6166'W
UTM

Universal Transverse Mercator

10T 551997 5255175
MGRS

Military Grid Reference

10TET5199755175
Geohash

Geohash Encoding

c23jbv8kk
Plus Code

Open Location Code

84VVCMXQ+5W

Map Location

Map data © OpenStreetMap contributors

Antipodal Point

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

Antipodal coordinates

-47.447943, -122.310276

Hemisphere: S, W

DD

Decimal Degrees

-47.447943, -122.310276
DMS

Degrees Minutes Seconds

47°26'52.59"S 122°18'36.99"W
DDM

Degrees Decimal Minutes

47°26.8766'S 122°18.6166'W
UTM

Universal Transverse Mercator

10G 551997 4744825
MGRS

Military Grid Reference

10GEN5199744825
Geohash

Geohash Encoding

1r940f27s
Plus Code

Open Location Code

444VHM2Q+X4

MGRS Decoded

MGRS encodes location as a nested hierarchy — zone, band, grid square, and offsets. Here is what each component of 10TET5199755175 means.

Component Value Meaning
UTM Zone 10 One of 60 vertical slices of Earth (6° wide each). Zone 10 runs -126° to -120° 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 ET A 100 × 100 km grid square within the zone/band. Column letter E (west–east) and row letter T (south–north).
Easting 51997 Distance east within the 100 km square. 5-digit value = 10 m resolution. Multiply by 1 to get meters.
Northing 55175 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 Seattle–Tacoma International Airport's geohash at every precision level alongside the bounding box each level represents.

Length Geohash Cell Size
1
c
≈ 5,000 × 5,000 km
2
c2
≈ 1,250 × 625 km
3
c23
≈ 156 × 156 km
4
c23j
≈ 39 × 20 km
5
c23jb
≈ 4.9 × 4.9 km
6
c23jbv
≈ 1.2 km × 610 m
7
c23jbv8
≈ 153 × 153 m
8
c23jbv8k
≈ 38 × 19 m
9
c23jbv8kk
≈ 4.8 × 4.8 m

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

About Seattle–Tacoma International Airport

https://en.wikipedia.org/wiki/Seattle%E2%80%93Tacoma_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

47.447943, -122.310276

DMS

47°26'52.59"N 122°18'36.99"W

DDM

47°26.8766'N 122°18.6166'W

UTM

10T 551997 5255175

MGRS

10TET5199755175

GH

c23jbv8kk

OLC

84VVCMXQ+5W

Related Landmarks

Ocean Reef Club Airport

US

25.3254, -80.2748

Aleknagik / New Airport

US

59.2826, -158.6180

Mesquite Airport

US

36.8331, -114.0559

Van Zandt County Regional Airport

US

32.6815, -95.9841

South Alabama Regional At Bill Benton Field Airport

US

31.3088, -86.3938

Lehigh Valley International Airport

US

40.6518, -75.4428