Button Ligne – Millimeters – Inches

Ligne (from the French for line) is the traditional unit for measuring buttons. In fact it was first used by button manufacturer’s way back in the 9th century.

It’s still in standard use today. So if you’re using buttons in your work, chances are you’re going to come across it.

To give you an idea of what a ligne means in terms of button size, 40 ligne (40L) is the same as 1 inch. Or 25mm. And 1 ligne (1L) is equivalent to 0.635mm.

Button Size Chart
You can use this button size chart to convert ligne to millimeters to inches. So it’s great for whatever unit of measurement you want to use.