Grid Point Code
Source on GitHub

Play

Jiangyin

JiangsuChina

Grid Point Code for Jiangyin
With a code
#L9H57-6R728
Said aloud
Jiangyin 6R728

Get the code for your door

What the code says

The Grid Point Code for Jiangyin is #L9H57-6R728. It names a cell 2.56 m north to south and 2.90 m east to west, centred on 31°54'39.64"N, 120°15'46.83"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 Jiangyin, near its centre.

Code
#L9H57-6R728
With a check character
#L9H57-6R728*P
Short form
6R728
Cell centre
31.911011, 120.263009
Cell size
2.56 m by 2.90 m
Region
Jiangsu
Country
China
Population
1,779,515

How to give this address

On a sign, a form or a delivery note

The whole code, #L9H57-6R728. It needs nothing else: no city, no street, no network to read it back.

Said aloud, in Jiangsu

Jiangyin 6R728: 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 4.5 km east or west of Jiangyin. 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

#L9H57-6R728*P. 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 45.4 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. L9H5Metropolitan area40 km by 45.4 km
  2. L9H57District8 km by 9.07 km
  3. L9H576Suburb1.6 km by 1.81 km
  4. L9H576RA few streets320 m by 363 m
  5. L9H576R7Building64 m by 72.6 m
  6. L9H576R72Entrance12.8 m by 14.5 m
  7. L9H576R728Doorway2.56 m by 2.9 m

More in China

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