Grid Point Code
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Honolulu

HawaiiUnited States

Grid Point Code for Honolulu
With a code
#FDJ34-W858T
Said aloud
Honolulu W858T

Get the code for your door

What the code says

The Grid Point Code for Honolulu is #FDJ34-W858T. It names a cell 2.56 m north to south and 3.19 m east to west, centred on 21°18'24.99"N, 157°51'29.99"W, and it turns back into that cell on any phone or computer by arithmetic alone: no network, no account, no lookup table.

The point used is the one GeoNames records for Honolulu, near its centre.

Code
#FDJ34-W858T
With a check character
#FDJ34-W858T*J
Short form
W858T
Cell centre
21.306943, -157.858330
Cell size
2.56 m by 3.19 m
Region
Hawaii
Country
United States
Population
350,964

How to give this address

On a sign, a form or a delivery note

The whole code, #FDJ34-W858T. It needs nothing else: no city, no street, no network to read it back.

Said aloud, in Hawaii

Honolulu W858T: a name both people know, then the last five characters. They give back the exact code for anywhere within 4.0 km north or south and 5.0 km east or west of Honolulu. Further away the same five name somewhere else, which is why the whole code is what goes on a sign.

Copied by hand, or read over a phone

#FDJ34-W858T*J. The character on the end catches any single mistyped symbol and any two neighbours swapped.

As a link or a square code

Open it on the map, move to the exact door, and add directions if the code needs help: "blue gate, second floor". The link and the square code carry them. Nothing is kept on this site.

From the city to the door

The first four characters name a cell about 40 km by 49.8 km here. Each one after that picks one of 25 inside the last, so the whole ten name a spot about the size of a doorway.

  1. FDJ3Metropolitan area40 km by 49.8 km
  2. FDJ34District8 km by 9.96 km
  3. FDJ34WSuburb1.6 km by 1.99 km
  4. FDJ34W8A few streets320 m by 398 m
  5. FDJ34W85Building64 m by 79.6 m
  6. FDJ34W858Entrance12.8 m by 15.9 m
  7. FDJ34W858TDoorway2.56 m by 3.19 m

More in United States

City, region and population from GeoNames, under CC BY 4.0.