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Ottawa Coordinates

Ontario, Canada · Elevation 70m

Quick answer: Ottawa is located at 45.421500, -75.697200 (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

45.421500, -75.697200
DMS

Degrees Minutes Seconds

45°25'17.40"N 75°41'49.92"W
DDM

Degrees Decimal Minutes

45°25.2900'N 75°41.8320'W
UTM

Universal Transverse Mercator

18T 445454 5030012
MGRS

Military Grid Reference

18TVR4545430012
Geohash

Geohash Encoding

f244mkwzr
Plus Code

Open Location Code

87Q6C8C3+J3

Map Location

Map data © OpenStreetMap contributors

Antipodal Point

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

Antipodal coordinates

-45.421500, -75.697200

Hemisphere: S, W

DD

Decimal Degrees

-45.421500, -75.697200
DMS

Degrees Minutes Seconds

45°25'17.40"S 75°41'49.92"W
DDM

Degrees Decimal Minutes

45°25.2900'S 75°41.8320'W
UTM

Universal Transverse Mercator

18G 445454 4969988
MGRS

Military Grid Reference

18GVQ4545469988
Geohash

Geohash Encoding

4rfjt7qbx
Plus Code

Open Location Code

4766H8H3+6V

MGRS Decoded

MGRS encodes location as a nested hierarchy — zone, band, grid square, and offsets. Here is what each component of 18TVR4545430012 means.

Component Value Meaning
UTM Zone 18 One of 60 vertical slices of Earth (6° wide each). Zone 18 runs -78° to -72° 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 VR A 100 × 100 km grid square within the zone/band. Column letter V (west–east) and row letter R (south–north).
Easting 45454 Distance east within the 100 km square. 5-digit value = 10 m resolution. Multiply by 1 to get meters.
Northing 30012 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 Ottawa's geohash at every precision level alongside the bounding box each level represents.

Length Geohash Cell Size
1
f
≈ 5,000 × 5,000 km
2
f2
≈ 1,250 × 625 km
3
f24
≈ 156 × 156 km
4
f244
≈ 39 × 20 km
5
f244m
≈ 4.9 × 4.9 km
6
f244mk
≈ 1.2 km × 610 m
7
f244mkw
≈ 153 × 153 m
8
f244mkwz
≈ 38 × 19 m
9
f244mkwzr
≈ 4.8 × 4.8 m

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

About Ottawa

Capital of Canada, located on the Ontario side of the Ottawa River, chosen by Queen Victoria in 1857.

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

45.421500, -75.697200

DMS

45°25'17.40"N 75°41'49.92"W

DDM

45°25.2900'N 75°41.8320'W

UTM

18T 445454 5030012

MGRS

18TVR4545430012

GH

f244mkwzr

OLC

87Q6C8C3+J3

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