Change the size of grid

Hi All,
I was wondering if there has anyway to change the size of grid? I know I can change it into 12 or 16 field grid, but their aspect ratio are all 4:3 even though my scene is in 16:9 (1920*1080).
Can anybody please help me to find the answer? I’ve been searching so long and get none of it. Thanks a lot!

There’s a world grid which is larger but no grid based on different aspect ratios.