Free calculator
Paper Size Converter (mm, Inches, Points, Pixels)
Convert paper and page sizes between millimetres, centimetres, inches, points and pixels at any DPI. Includes presets for A4, Letter and other standard sizes.
—Millimetres
—Centimetres
—Inches
—Points
—Pixels
—Aspect ratio
How it works
1 inch = 25.4 mm = 72 points. Pixels depend on resolution: at 300 dpi, an inch is 300 pixels. Browse the full paper size chart for every standard format.
Frequently asked questions
How many pixels is A4 at 300 dpi?
2480 x 3508 pixels.
How many points is US Letter?
612 x 792 points.