Chennai
Tamil NaduIndia
- With a code
#K8D78-M4N1M- Said aloud
- Chennai
M4N1M
What the code says
The Grid Point Code for Chennai is #K8D78-M4N1M. It names a cell 2.56 m north to south and 3.33 m east to west, centred on 13°05'16.21"N, 80°16'42.50"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 Chennai, near its centre.
- Code
#K8D78-M4N1M- With a check character
#K8D78-M4N1M*W- Short form
M4N1M- Cell centre
- 13.087837, 80.278472
- Cell size
- 2.56 m by 3.33 m
- Region
- Tamil Nadu
- Country
- India
- Population
- 4,681,087
How to give this address
- On a sign, a form or a delivery note
The whole code,
#K8D78-M4N1M. It needs nothing else: no city, no street, no network to read it back.- Said aloud, in Tamil Nadu
Chennai M4N1M: 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 5.2 km east or west of Chennai. 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
#K8D78-M4N1M*W. 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 52 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.
- K8D7Metropolitan area40 km by 52 km
- K8D78District8 km by 10.4 km
- K8D78MSuburb1.6 km by 2.08 km
- K8D78M4A few streets320 m by 416 m
- K8D78M4NBuilding64 m by 83.3 m
- K8D78M4N1Entrance12.8 m by 16.7 m
- K8D78M4N1MDoorway2.56 m by 3.33 m
More in India
City, region and population from GeoNames, under CC BY 4.0.