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Henderson Field Coordinates

71, UM · Elevation 4m

Quick answer: Henderson Field is located at 28.201700, -177.380997 (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

28.201700, -177.380997
DMS

Degrees Minutes Seconds

28°12'6.12"N 177°22'51.59"W
DDM

Degrees Decimal Minutes

28°12.1020'N 177°22.8598'W
UTM

Universal Transverse Mercator

1R 462609 3119605
MGRS

Military Grid Reference

1RDM6260919605
Geohash

Geohash Encoding

8j1b7tgng
Plus Code

Open Location Code

72W46J29+P7

Map Location

Map data © OpenStreetMap contributors

Antipodal Point

The point on the exact opposite side of Earth from Henderson Field. If you drilled straight through the planet's center, you would emerge here.

Antipodal coordinates

-28.201700, -177.380997

Hemisphere: S, W

DD

Decimal Degrees

-28.201700, -177.380997
DMS

Degrees Minutes Seconds

28°12'6.12"S 177°22'51.59"W
DDM

Degrees Decimal Minutes

28°12.1020'S 177°22.8598'W
UTM

Universal Transverse Mercator

1J 462609 6880395
MGRS

Military Grid Reference

1JDJ6260980395
Geohash

Geohash Encoding

24czed515
Plus Code

Open Location Code

5234QJX9+8M

MGRS Decoded

MGRS encodes location as a nested hierarchy — zone, band, grid square, and offsets. Here is what each component of 1RDM6260919605 means.

Component Value Meaning
UTM Zone 1 One of 60 vertical slices of Earth (6° wide each). Zone 1 runs -180° to -174° longitude.
Latitude Band R 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 62609 Distance east within the 100 km square. 5-digit value = 10 m resolution. Multiply by 1 to get meters.
Northing 19605 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 Henderson Field's geohash at every precision level alongside the bounding box each level represents.

Length Geohash Cell Size
1
8
≈ 5,000 × 5,000 km
2
8j
≈ 1,250 × 625 km
3
8j1
≈ 156 × 156 km
4
8j1b
≈ 39 × 20 km
5
8j1b7
≈ 4.9 × 4.9 km
6
8j1b7t
≈ 1.2 km × 610 m
7
8j1b7tg
≈ 153 × 153 m
8
8j1b7tgn
≈ 38 × 19 m
9
8j1b7tgng
≈ 4.8 × 4.8 m

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

About Henderson Field

https://en.wikipedia.org/wiki/Henderson_Field_(Midway_Atoll)

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

28.201700, -177.380997

DMS

28°12'6.12"N 177°22'51.59"W

DDM

28°12.1020'N 177°22.8598'W

UTM

1R 462609 3119605

MGRS

1RDM6260919605

GH

8j1b7tgng

OLC

72W46J29+P7

Related Landmarks

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UM

19.2824, 166.6366