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Boston Logan International Airport Coordinates

MA, US · Elevation 6m

Quick answer: Boston Logan International Airport is located at 42.361970, -71.007900 (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

42.361970, -71.007900
DMS

Degrees Minutes Seconds

42°21'43.09"N 71°0'28.44"W
DDM

Degrees Decimal Minutes

42°21.7182'N 71°0.4740'W
UTM

Universal Transverse Mercator

19T 334653 4691919
MGRS

Military Grid Reference

19TCG3465391919
Geohash

Geohash Encoding

drt8bpv8k
Plus Code

Open Location Code

87JC9X6R+QV

Map Location

Map data © OpenStreetMap contributors

Antipodal Point

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

Antipodal coordinates

-42.361970, -71.007900

Hemisphere: S, W

DD

Decimal Degrees

-42.361970, -71.007900
DMS

Degrees Minutes Seconds

42°21'43.09"S 71°0'28.44"W
DDM

Degrees Decimal Minutes

42°21.7182'S 71°0.4740'W
UTM

Universal Transverse Mercator

19G 334653 5308081
MGRS

Military Grid Reference

19GCP3465308081
Geohash

Geohash Encoding

62mx00jxs
Plus Code

Open Location Code

479CJXQR+93

MGRS Decoded

MGRS encodes location as a nested hierarchy — zone, band, grid square, and offsets. Here is what each component of 19TCG3465391919 means.

Component Value Meaning
UTM Zone 19 One of 60 vertical slices of Earth (6° wide each). Zone 19 runs -72° to -66° 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 CG A 100 × 100 km grid square within the zone/band. Column letter C (west–east) and row letter G (south–north).
Easting 34653 Distance east within the 100 km square. 5-digit value = 10 m resolution. Multiply by 1 to get meters.
Northing 91919 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 Boston Logan 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
dr
≈ 1,250 × 625 km
3
drt
≈ 156 × 156 km
4
drt8
≈ 39 × 20 km
5
drt8b
≈ 4.9 × 4.9 km
6
drt8bp
≈ 1.2 km × 610 m
7
drt8bpv
≈ 153 × 153 m
8
drt8bpv8
≈ 38 × 19 m
9
drt8bpv8k
≈ 4.8 × 4.8 m

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

About Boston Logan International Airport

https://en.wikipedia.org/wiki/Logan_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

42.361970, -71.007900

DMS

42°21'43.09"N 71°0'28.44"W

DDM

42°21.7182'N 71°0.4740'W

UTM

19T 334653 4691919

MGRS

19TCG3465391919

GH

drt8bpv8k

OLC

87JC9X6R+QV

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