Paper size tools
Ten calculators that do the printer maths: identify a sheet, convert units, scale between sizes, size images for print, pick envelopes, tile posters and impose booklets. Free, instant, no sign-up.
Paper Size FinderMeasure any sheet, type the two numbers, and find out exactly which paper size it is, plus the closest standards if it is a near miss.Open toolPaper Size ConverterAny paper size in millimetres, centimetres, inches, points, picas and pixels at the DPI you choose. Custom dimensions welcome.Open toolPaper Scale CalculatorThe exact percentage to enlarge or reduce a page from one size to another, with a warning when you need to rotate first.Open toolPixel & DPI CalculatorPixels needed for any print size at any resolution, or the largest print your image can make without going soft.Open toolPaper Weight Converter (GSM to lb)Convert grams per square metre to pounds for bond, text, cover and index stock, and find out what a weight actually feels like.Open toolEnvelope FinderPick a sheet and how you will fold it, and see every standard envelope it fits into, tightest fit first.Open toolPoster Tiling CalculatorPrint a large poster on ordinary sheets: how many pages, which orientation, and how much overlap to leave for gluing.Open toolAspect Ratio CheckerFind out whether your photo or design will crop on a given paper size, how much you will lose, and which sizes match its shape.Open toolBooklet & Imposition CalculatorSheets, page order and spine width for a saddle-stitched or perfect-bound booklet, from the finished page size and page count.Open toolPaper Size Chart GeneratorBuild a chart of only the sizes you use, in the units you want, then print it or download it as a CSV.Open tool