12½ Paper Size Dimensions
12½
318 x 241 mm
A 12½ piece of paper measures 318 × 241 mm or 12.5 × 9.5 inches. 12½ is part of the US Envelope series.
A 12½ piece of paper measures 318 × 241 mm or 12.5 × 9.5 inches. 12½ is part of the US Envelope series.