Grid Point Code

Play

São Paulo

Brazil

With a code
#9GJ2H-R9547
Said aloud
São Paulo R9547

Get the code for your door

What the code says

The Grid Point Code for São Paulo is #9GJ2H-R9547. It names a cell 2.56 m north to south and 3.13 m east to west, centred on 23°32'50.97"S, 46°38'09.99"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 São Paulo, near its centre.

Code
#9GJ2H-R9547
With a check character
#9GJ2H-R9547*H
Short form
R9547
Cell centre
-23.547491, -46.636109
Cell size
2.56 m by 3.13 m
Country
Brazil
Population
12,400,232

How to give this address

On a sign, a form or a delivery note

The whole code, #9GJ2H-R9547. It needs nothing else: no city, no street, no network to read it back.

Said aloud, in Brazil

São Paulo R9547: 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 São Paulo. 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

#9GJ2H-R9547*H. 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 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. 9GJ2Metropolitan area40 km by 49 km
  2. 9GJ2HDistrict8 km by 9.8 km
  3. 9GJ2HRSuburb1.6 km by 1.96 km
  4. 9GJ2HR9A few streets320 m by 392 m
  5. 9GJ2HR95Building64 m by 78.4 m
  6. 9GJ2HR954Entrance12.8 m by 15.7 m
  7. 9GJ2HR9547Doorway2.56 m by 3.13 m

More in Brazil

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