Research Institute for World Grid Squares

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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 arc-minutes 1 arc-degree 97,200
2nd level 8 numeric digits the 1st level grid square consists of 64 2nd level grid squares (8 times 8) 5 arc-minutes 7.5 arc-minutes 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 arc-seconds 45 arc-seconds 622,080,000
4th level 11 numeric digits the 3rd level grid square consists of 4 4th level grid squares (2 times 2) 15 arc-seconds 22.5 arc-seconds 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 arc-seconds 11.25 arc-seconds 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 arc-seconds 5.625 arc-seconds 39,813,120,000

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