Grid Point Code

Play

Mount Kilimanjaro

near TarakeaKilimanjaro RegionTanzania

With a code
#81J7C-C3X3K
Said aloud
Mount Kilimanjaro C3X3K

Open in the playground

What the code says

The Grid Point Code for Mount Kilimanjaro is #81J7C-C3X3K. It names a cell 2.56 m north to south and 3.41 m east to west, centred on 3°03'59.97"S, 37°21'32.98"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
Mountain massif in Kilimanjaro National Park in Tanzania
Code
#81J7C-C3X3K
With a check character
#81J7C-C3X3K*9
Short form
C3X3K
Cell centre
-3.066659, 37.359160
Cell size
2.56 m by 3.41 m
Region
Kilimanjaro Region
Country
Tanzania

How to give this address

On a sign, a form or a delivery note

The whole code, #81J7C-C3X3K. It needs nothing else: no city, no street, no network to read it back.

Said aloud, in Kilimanjaro Region

Mount Kilimanjaro C3X3K: 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 5.3 km east or west of Mount Kilimanjaro. 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

#81J7C-C3X3K*9. 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 53.4 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. 81J7Metropolitan area40 km by 53.4 km
  2. 81J7CDistrict8 km by 10.7 km
  3. 81J7CCSuburb1.6 km by 2.13 km
  4. 81J7CC3A few streets320 m by 427 m
  5. 81J7CC3XBuilding64 m by 85.4 m
  6. 81J7CC3X3Entrance12.8 m by 17.1 m
  7. 81J7CC3X3KDoorway2.56 m by 3.41 m

More in Tanzania

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