Convert & plan
Pixels to inches calculator
Convert pixel dimensions to inches, centimeters or millimeters at your chosen PPI. Plan a print with cropping or borders, or convert a batch of sizes.
Start with pixel dimensions and PPI.
Start with the measurements you have
Image and screen sizing tools
Find a physical size, check a proposed print, or work out a display’s pixel density. Each tool shows the assumptions behind the answer.
Check a print
Image DPI and PPI calculator
See the image resolution at a proposed print size. Compare your source pixels with the dimensions you want to print.
Start with image pixels and print dimensions.
Measure a display
Screen PPI calculator
Calculate physical screen density, pixel pitch and active width and height from a display’s native resolution and diagonal.
Start with native resolution and screen size.
Prepare artwork
Print bleed calculator
Add the required bleed outside the finished trim size. See full artwork dimensions and a whole-pixel canvas, with the rounding explained.
Start with trim size, bleed per edge and PPI.
Set up a document
Paper size and margin calculator
Compare Letter, Legal, Tabloid and A-series sheets at your PPI. Reserve a uniform margin and see both the full canvas and content rectangle.
Start with a paper format and image resolution.
Estimate from a pixel count
Megapixels to print size calculator
Turn nominal megapixels and an explicit aspect ratio into estimated pixel edges and print dimensions. Compare PPI choices with the rounding explained.
Start with megapixels, aspect ratio and target PPI.
Choose print settings
Print scaling calculator
Compare Fit, Shrink only, Actual size and custom percentages. Check output dimensions and clipping against a stated printable area.
Start with document size, sheet size and margin allowance.
Plan a scan
Scan resolution calculator
Find original-size scan dpi for a target print. Compare fitting and cropping, estimate full-scan pixels and check a supported scanner setting.
Start with original and print dimensions plus target PPI.
Image data, before saving
Image file size calculator
Estimate uncompressed raster pixel-data bytes from width, height, channels and bits per channel. Compare decimal MB with binary MiB without guessing JPEG or PNG size.
Start with the values named in this tool.
Screen raster sizing
CSS pixels to device pixels
Convert a CSS box to a device-pixel backing size using an explicit device pixel ratio. See whole-pixel rounding and keep CSS units distinct from print inches.
Start with the values named in this tool.
Large-print planning
Poster tiling calculator
Estimate a poster tile grid from finished dimensions, each sheet’s actual printable area and overlap. See rows, columns and sheet count before printing.
Start with the values named in this tool.
Print mat geometry
Photo mat opening calculator
Calculate a photo mat opening from outer dimensions and chosen borders, then find the image pixels needed at a specified print resolution.
Start with the values named in this tool.
Image rotation geometry
Rotated image canvas calculator
Find the whole-pixel canvas needed to hold a rectangular image rotated by any angle without cropping. Convert that new canvas size to inches at your selected PPI.
Start with the values named in this tool.
Photo crop and retained detail
Aspect ratio crop resolution calculator
Find the largest centered crop at a target aspect ratio, its retained pixels and effective print PPI without adding pixels.
Start with the values named in this tool.
Multi-photo print layout
Photo contact sheet calculator
Plan a contact sheet from page size, margins, rows, columns and spacing. Find the fitted photo size and minimum image pixels at your chosen PPI.
Start with the values named in this tool.