See A4, US Letter, envelopes, business cards and photo prints at actual size on your screen, compare two sizes, and get pixels for printing
How to use
Calibrate once by holding a bank card against the screen and matching the outline. Other actual-size tools on the site reuse it.
Pick a size, such as A4, US Letter, a 4 x 6 photo print or a DL envelope. It is shown at its real size.
Choose Compare with to lay a second size over it, and switch between portrait and landscape.
Read the size in mm, cm and inches, and the pixels you need to print it at 72, 150, 300 or 600 dpi.
Why use this tool
Actual size on your screen: After a quick card calibration, a business card, photo print or envelope on screen matches the real thing, so you can hold an object against it.
Compare two sizes: See exactly how A4 and US Letter differ, or whether a card fits an envelope, with one size drawn over the other.
Pixels for printing: Every size in pixels at 72, 150, 300 and 600 dpi, for designing flyers, photos and documents that print sharp.
All the common sizes: A and B paper sizes, US Letter, Legal and Tabloid, photo prints from wallet to 8 x 10, envelopes, business cards and sticky notes.
Frequently asked questions
What is the size of A4 paper?
A4 is 210 x 297 mm, or 8.27 x 11.69 inches. At 300 dpi it is 2480 x 3508 pixels.
What is the difference between A4 and US Letter?
US Letter is 216 x 279 mm, so it is 6 mm wider and 18 mm shorter than A4. Choose A4 and compare with US Letter to see it.
How can a screen show real size?
Screens have different pixel densities, so the page asks you to match a bank card, which is the same size everywhere. From then on, millimetres on screen are real millimetres.
Why does a large size not fit on my screen?
A3 or Tabloid are bigger than most screens at actual size. Scroll to see all of it, or tick Fit to screen to see it scaled down.