Cardiff
WalesUnited Kingdom
- With a code
#R0M63-41XR4- Said aloud
- Cardiff
41XR4
What the code says
The Grid Point Code for Cardiff is #R0M63-41XR4. It names a cell 2.56 m north to south and 2.13 m east to west, centred on 51°28'48.04"N, 3°10'47.99"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 Cardiff, near its centre.
- Code
#R0M63-41XR4- With a check character
#R0M63-41XR4*F- Short form
41XR4- Cell centre
- 51.480012, -3.179996
- Cell size
- 2.56 m by 2.13 m
- Region
- Wales
- Country
- United Kingdom
- Population
- 372,089
How to give this address
- On a sign, a form or a delivery note
The whole code,
#R0M63-41XR4. It needs nothing else: no city, no street, no network to read it back.- Said aloud, in Wales
Cardiff 41XR4: 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 3.3 km east or west of Cardiff. 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
#R0M63-41XR4*F. 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 33.3 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.
- R0M6Metropolitan area40 km by 33.3 km
- R0M63District8 km by 6.66 km
- R0M634Suburb1.6 km by 1.33 km
- R0M6341A few streets320 m by 266 m
- R0M6341XBuilding64 m by 53.2 m
- R0M6341XREntrance12.8 m by 10.6 m
- R0M6341XR4Doorway2.56 m by 2.13 m
More in United Kingdom
City, region and population from GeoNames, under CC BY 4.0.