UK Standard and Custom Plate Sizes You Should Know About

Understanding dimensions helps when you're trying to pick the perfect fit. The UK number plate size in inches for standard vehicles is typically 20.5 inches wide by 4.4 inches tall. But when you switch to a shortened layout, those numbers shrink based on how many characters are on your plate.

For example:

A 5-character plate might be around 13 inches wide

A 4-character plate gets even smaller at 11 inches

And a rare 3-character registration might need just 9 inches of width

If you’re going for a small number plate, make sure you get one custom-cut to your reg length. This way, your plate fits snugly without wasted space — and still stays road-legal.