Grid Point Code

Play

Okayama

Japan

With a code
#L8X99-98LK6
Said aloud
Okayama 98LK6

Get the code for your door

What the code says

The Grid Point Code for Okayama is #L8X99-98LK6. It names a cell 2.56 m north to south and 2.81 m east to west, centred on 34°39'00.02"N, 133°55'59.94"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 Okayama, near its centre.

Code
#L8X99-98LK6
With a check character
#L8X99-98LK6*8
Short form
98LK6
Cell centre
34.650006, 133.933317
Cell size
2.56 m by 2.81 m
Country
Japan
Population
724,691

How to give this address

On a sign, a form or a delivery note

The whole code, #L8X99-98LK6. It needs nothing else: no city, no street, no network to read it back.

Said aloud, in Japan

Okayama 98LK6: 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 4.4 km east or west of Okayama. 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

#L8X99-98LK6*8. 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 44 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. L8X9Metropolitan area40 km by 44 km
  2. L8X99District8 km by 8.79 km
  3. L8X999Suburb1.6 km by 1.76 km
  4. L8X9998A few streets320 m by 352 m
  5. L8X9998LBuilding64 m by 70.3 m
  6. L8X9998LKEntrance12.8 m by 14.1 m
  7. L8X9998LK6Doorway2.56 m by 2.81 m

More in Japan

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