so the minimum legal size for a stanard 7 digit plate is:
width: 460mm
(made up of 7x50mm for characters, 5x11mm spacing, 1x33mm spacing between groups and 2x11mm margin)
if you have a "1" in your plate you can reduce the total width by 36mm for each character of "1" you have.
min width for 6 digit plate: 377mm
5 digit: 316mm
height: 101mm
(made up of 79mm for characters and 2x11mm margins no matter how many characters you have)
overall thats:
460mm x 101mm (7 characters)
most standard plates come slightly bigger than that.
eg fancyplates are: 520mm x 112mm
width: 460mm
(made up of 7x50mm for characters, 5x11mm spacing, 1x33mm spacing between groups and 2x11mm margin)
if you have a "1" in your plate you can reduce the total width by 36mm for each character of "1" you have.
min width for 6 digit plate: 377mm
5 digit: 316mm
height: 101mm
(made up of 79mm for characters and 2x11mm margins no matter how many characters you have)
overall thats:
460mm x 101mm (7 characters)
most standard plates come slightly bigger than that.
eg fancyplates are: 520mm x 112mm