A print pixel calculator converts physical print dimensions into exact pixel requirements at any DPI. Enter paper size and desired DPI to get the minimum source image resolution. Includes presets for common print sizes, bleed margins, and a book spine-width calculator based on page count.
Print Specifications
Canvas Specs
Enter your specs and hit Calculate to see the preview.
Color Accuracy & Proofing Gear
Calculating the exact pixels for a 300 DPI print is useless if your monitor's colors don't match the final output. If you are designing for physical print, you absolutely need a hardware monitor calibration tool (like a Datacolor Spyder or X-Rite ColorMunki) to ensure your screen accurately displays CMYK profiles. For proofing your work before sending it to a costly commercial printer, invest in a high-quality wide-format photo printer so you can verify bleed margins and color saturation in real life.
What is Print Bleed and Safe Zone?
When you send a design to a commercial printer, the final product is printed on a larger sheet of paper and then cut down to its final "trim size" using a massive guillotine blade. Because the blade can shift up to 1/16 of an inch during the cut, you must extend your artwork's background beyond the trim edge. This extra margin is called the bleed (usually 0.125 inches). If you don't include bleed, your final print might have ugly white borders. Conversely, any important text or logos must be kept inside the safe zone (usually 0.25 inches inside the trim edge) so they aren't accidentally sliced off. PrintPerfect calculates the exact pixel dimensions you need to set up your Photoshop canvas, ensuring your artwork prints flawlessly with the correct bleed margins built in.
Frequently Asked Questions
What DPI do I need for printing?
300 DPI is the standard for professional print at normal viewing distance (books, magazines, photos held in hand). 150 DPI is acceptable for large posters viewed from 3+ feet away. Billboard-scale prints can use 72 DPI or lower because they are viewed from much farther away.
How do I calculate pixels from print size and DPI?
Multiply the print dimension in inches by the DPI. For a 24×36 inch poster at 300 DPI: 24 × 300 = 7,200 pixels wide and 36 × 300 = 10,800 pixels tall. Your source image must be at least this resolution — upscaling from a smaller image will produce blurry prints.
What is bleed in print design?
Bleed is extra image area (typically 0.125" or 1/8") beyond the final trim size that gets cut off during printing. It ensures no white edges appear if the paper shifts slightly during cutting. Always add bleed to your canvas size — a 5×7 print with bleed should be designed at 5.25×7.25 inches.