Grid Point Code

Play

Sham Shui Po

Sham Shui Po DistrictHong Kong

With a code
#KHFF4-0JHJT
Said aloud
Sham Shui Po 0JHJT

Get the code for your door

What the code says

The Grid Point Code for Sham Shui Po is #KHFF4-0JHJT. It names a cell 2.56 m north to south and 3.16 m east to west, centred on 22°19'48.87"N, 114°09'33.97"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 Sham Shui Po, near its centre.

Code
#KHFF4-0JHJT
With a check character
#KHFF4-0JHJT*J
Short form
0JHJT
Cell centre
22.330241, 114.159437
Cell size
2.56 m by 3.16 m
Region
Sham Shui Po District
Country
Hong Kong
Population
431,090

How to give this address

On a sign, a form or a delivery note

The whole code, #KHFF4-0JHJT. It needs nothing else: no city, no street, no network to read it back.

Said aloud, in Sham Shui Po District

Sham Shui Po 0JHJT: 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 Sham Shui Po. 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

#KHFF4-0JHJT*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 49.4 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 9.89 km
  3. KHFF40Suburb1.6 km by 1.98 km
  4. KHFF40JA few streets320 m by 395 m
  5. KHFF40JHBuilding64 m by 79.1 m
  6. KHFF40JHJEntrance12.8 m by 15.8 m
  7. KHFF40JHJTDoorway2.56 m by 3.16 m

More in Hong Kong

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