Paper Size Converter
Look up the dimensions of A, B and US paper sizes in mm, cm, inches and pixels at 72, 96 and 300 DPI, free online.
About this calculator
ISO 216 A-series sheets keep a 1:√2 ratio; each size is half of the previous one. US sizes such as Letter and Legal are measured in inches. Pixel sizes are shown at screen (72, 96 DPI) and print (300 DPI) resolutions.