Grid Point Code
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Cairo

Egypt

Grid Point Code for Cairo
With a code
#J7MNH-FLC1K
Said aloud
Cairo FLC1K

Get the code for your door

What the code says

The Grid Point Code for Cairo is #J7MNH-FLC1K. It names a cell 2.56 m north to south and 2.96 m east to west, centred on 30°03'45.46"N, 31°14'58.77"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 Cairo, near its centre, and Cairo is the capital of Egypt.

Code
#J7MNH-FLC1K
With a check character
#J7MNH-FLC1K*3
Short form
FLC1K
Cell centre
30.062627, 31.249659
Cell size
2.56 m by 2.96 m
Country
Egypt
Population
9,606,916

How to give this address

On a sign, a form or a delivery note

The whole code, #J7MNH-FLC1K. It needs nothing else: no city, no street, no network to read it back.

Said aloud, in Egypt

Cairo FLC1K: 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 Cairo. 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

#J7MNH-FLC1K*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 46.2 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. J7MNMetropolitan area40 km by 46.2 km
  2. J7MNHDistrict8 km by 9.25 km
  3. J7MNHFSuburb1.6 km by 1.85 km
  4. J7MNHFLA few streets320 m by 370 m
  5. J7MNHFLCBuilding64 m by 74 m
  6. J7MNHFLC1Entrance12.8 m by 14.8 m
  7. J7MNHFLC1KDoorway2.56 m by 2.96 m

More in Egypt

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