Grid Point Code

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Mercato Centrale

FlorenceTuscanyItaly

Without a code
Mercato Centrale, Florence, and then directions
With a code
#J04KL-1PLRN
Said aloud
Mercato Centrale 1PLRN

This code is one spot in Mercato Centrale, a cell 2.56 m by 2.47 m. Every stall front and doorway in it has a code of its own.

Get the code for your door

What the code says

The Grid Point Code for Mercato Centrale is #J04KL-1PLRN. It names a cell 2.56 m north to south and 2.47 m east to west, centred on 43°46'35.97"N, 11°15'12.01"E, and it turns back into that cell on any phone or computer by arithmetic alone: no network, no account, no lookup table.

What it is
Building in Florence, Italy
Code
#J04KL-1PLRN
With a check character
#J04KL-1PLRN*H
Short form
1PLRN
Cell centre
43.776657, 11.253335
Cell size
2.56 m by 2.47 m
City
Florence
Region
Tuscany
Country
Italy

How to give this address

On a sign, a form or a delivery note

The whole code, #J04KL-1PLRN. It needs nothing else: no city, no street, no network to read it back.

Said aloud, in Florence

Mercato Centrale 1PLRN: 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 3.9 km east or west of Mercato Centrale. 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

#J04KL-1PLRN*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 38.6 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. J04KMetropolitan area40 km by 38.6 km
  2. J04KLDistrict8 km by 7.72 km
  3. J04KL1Suburb1.6 km by 1.54 km
  4. J04KL1PA few streets320 m by 309 m
  5. J04KL1PLBuilding64 m by 61.7 m
  6. J04KL1PLREntrance12.8 m by 12.3 m
  7. J04KL1PLRNDoorway2.56 m by 2.47 m

More in Italy

Place and region from Wikidata, described on Wikipedia; city from GeoNames, under CC BY 4.0.