Grid Point Code

Play

Wong Tai Sin

Wong Tai Sin DistrictHong Kong

With a code
#KHFF4-F0DRC
Said aloud
Wong Tai Sin F0DRC

Get the code for your door

What the code says

The Grid Point Code for Wong Tai Sin is #KHFF4-F0DRC. It names a cell 2.56 m north to south and 3.16 m east to west, centred on 22°21'00.04"N, 114°11'00.01"E, 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 Wong Tai Sin, near its centre.

Code
#KHFF4-F0DRC
With a check character
#KHFF4-F0DRC*K
Short form
F0DRC
Cell centre
22.350010, 114.183337
Cell size
2.56 m by 3.16 m
Region
Wong Tai Sin District
Country
Hong Kong
Population
425,235

How to give this address

On a sign, a form or a delivery note

The whole code, #KHFF4-F0DRC. It needs nothing else: no city, no street, no network to read it back.

Said aloud, in Wong Tai Sin District

Wong Tai Sin F0DRC: 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 4.9 km east or west of Wong Tai Sin. 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

#KHFF4-F0DRC*K. 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 49.4 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. KHFFMetropolitan area40 km by 49.4 km
  2. KHFF4District8 km by 9.88 km
  3. KHFF4FSuburb1.6 km by 1.98 km
  4. KHFF4F0A few streets320 m by 395 m
  5. KHFF4F0DBuilding64 m by 79.1 m
  6. KHFF4F0DREntrance12.8 m by 15.8 m
  7. KHFF4F0DRCDoorway2.56 m by 3.16 m

More in Hong Kong

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