Our mission
Research Institute for World Grid Squares enhances research activities related to world grid square codes and distribute software and data based on a compatible extension of JIS X0410 (Japan Industrial Standards) to worldwide.


 Assist to introduce grid square statistics to developing countries
 Assist to calculate the world grid square statistics from data collected Web services
 Assist to develop IoT applications from global point of view
 Assist research activities related to the world grid square statistics
What is the world grid square system？
The grid square code is a key definition to generate grid square statistics data. In the case of Japan, we have the definition of grid square code in JIS (Japan Industrial Standards), which is standardized as JIS X0410. We propose a compatible extension of JIS X0410 to worldwide and call it world grid square system. The world grid square code can identify grids covering the world based on 6 layers. We can express a grid square by using from 6 to 13 digit sequence with accordance to its resolution.
Layer type 
length of sequences 
definition 
latitude length 
longitude length 
The total number 
1st level 
6 numeric digits 

40 arcminutes 
１ arcdegree 
97,200 
2nd level 
8 numeric digits 
the 1st level grid square consists of 64 2nd level grid squares (8 times 8) 
5 arcminutes 
7.5 arcminutes 
6,220,800 
3rd level(basic) 
10 numeric digits 
the 2nd level grid square consists of 100 3rd level grid squares (10 times 10) 
30 arcseconds 
45 arcseconds 
622,080,000 
4th level 
11 numeric digits 
the 3rd level grid square consists of 4 4th level grid squares (2 times 2) 
15 arcseconds 
22.5 arcseconds 
2,488,320,000 
5th level 
12 numeric digits 
the 4th level grid square consists of 4 5th level grid squares (2 times 2) 
7.5 arcseconds 
11.25 arcseconds 
9,953,280,000 
6th level 
13 numeric digits 
the 5th level grid square consists of 4 6th level grid squares (2 times 2) 
3.75 arcseconds 
5.625 arcseconds 
39,813,120,000 
Extended 100m level (12 digits)

12 numeric digits

the 3rd level grid square consists of 100 extended 100m (12 digits) level grid squares (10 times 10) 
3 arcseconds

4.5 arcseconds

62,208,000,000 
Extended 100m level (13 digits)

13 numeric digits

the 4th level grid square consists of 25 extended 100m (13 digits) level grid squares (5 times 5) 
3 arcseconds

4.5 arcseconds

62,208,000,000

Extended 10m level (14 digits)

14 numeric digits

the extended 100m (12 digits) level grid square consists of 100 extended 10m (14 digits) level grid squares (10 times 10)

0.3 arcseconds

0.45 arcseconds

6,220,800,000,000

Extended 1m level (16 digits)

16 numeric digits

the extended 10m (14 digits) level grid square consists of 100 extended 1m (16 digits) level grid squares (10 times 10) 
0.03 arcseconds

0.045 arcseconds

622,080,000,000,000 
We define 2 numeric digits to the definition of JIS X0410 additionally. The first digit can take 1 to 8 (0th level) in order to express regional area in the world. The method to compute 1st level to 6th level sequences is the same as JIS X0410. In this sense, JIS X0410 is included in the world grid square system.
conceptual illustration of world grid square codes
(c) 20152022 Research Institute for World Grid Squares