Drawings - Standard Metric Sizes

Standard metric sizes of drawing sheets

The ISO A0 size is defined as having an area of one square meter. Each smaller sheet size is exactly half the area of the previous size

·         an A0 sheet cut in half gives two A1 sheets

·         an A1 sheet in half you get two A2 sheets

Designation	Size of sheet		Size of frame
	A mm	B mm	C mm	D mm
A0	841	1189	791	1139
A1	594	841	554	804
A2	420	594	380	554
A3	297	420	267	390
A4	210	297	180	267
A5	148	210
A6	105	148