Grid Point Code

Play

Porto Alegre

Rio Grande do SulBrazil

With a code
#95KMD-RKPJ9
Said aloud
Porto Alegre RKPJ9

Get the code for your door

What the code says

The Grid Point Code for Porto Alegre is #95KMD-RKPJ9. It names a cell 2.56 m north to south and 2.96 m east to west, centred on 30°01'58.21"S, 51°13'48.69"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 Porto Alegre, near its centre.

Code
#95KMD-RKPJ9
With a check character
#95KMD-RKPJ9*3
Short form
RKPJ9
Cell centre
-30.032836, -51.230193
Cell size
2.56 m by 2.96 m
Region
Rio Grande do Sul
Country
Brazil
Population
1,488,252

How to give this address

On a sign, a form or a delivery note

The whole code, #95KMD-RKPJ9. It needs nothing else: no city, no street, no network to read it back.

Said aloud, in Rio Grande do Sul

Porto Alegre RKPJ9: 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 4.6 km east or west of Porto Alegre. 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

#95KMD-RKPJ9*3. 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 46.3 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. 95KMMetropolitan area40 km by 46.3 km
  2. 95KMDDistrict8 km by 9.25 km
  3. 95KMDRSuburb1.6 km by 1.85 km
  4. 95KMDRKA few streets320 m by 370 m
  5. 95KMDRKPBuilding64 m by 74 m
  6. 95KMDRKPJEntrance12.8 m by 14.8 m
  7. 95KMDRKPJ9Doorway2.56 m by 2.96 m

More in Brazil

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