Print & Typography
Every print & typography calculator on CalcEngines — unit converters, derived indices and interpretive tools, each with its formula, a worked example and the reference intervals it is judged against.
5 calculators in this section
- DPI and Print Size Calculator (Pixels to Inches, Both Ways)Pixels to printed size and back, at whatever resolution you choose — plus the part that actually decides the job: whether the file is big enough. The thresholds here are derived from ISO 12647-2's own screen-ruling range and from one arcminute of visual acuity, and the page says which of the two each number comes from.
- em, rem and px Converter (CSS Relative Units)1.5em is not a length until you know the parent's font size, and 1.5rem is not a length until you know the root's — which the reader is entitled to change. This converts between em, rem, percentages and every absolute CSS unit, shows what your layout does for a reader who has set 20 or 24 px, and refuses ex and ch, which no formula can supply.
- Paper Size Converter (A4, Letter, ANSI, ARCH, and Pixels)Every ISO 216 A, B and C size, the DIN overformats, and the North American named, ANSI and ARCH sheets — in millimetres, centimetres, inches, points and pixels at whatever resolution you are working at. The ISO sizes are constructed from the standard's own halving rule rather than copied from its table.
- Paper Weight Converter: GSM to lb (Bond, Text, Cover, Index)US basis weight is not a unit — it is the weight of 500 sheets at the grade's own basic size, and every grade uses a different one. So 20 lb bond, 50 lb text and 28 lb cover are the same paper, and 80 lb cover is nearly twice 80 lb text. This converts either way through the basic size, and handles caliper in points honestly, through a density you can see.
- Typographic Units Converter (Points, Picas, Didot, Pixels)There are at least four different points in print and they are up to 7% apart: the PostScript point your software means by "pt", the TeX or American printer's point, and the Didot point of continental Europe, whose own value is genuinely disputed. This converts between all of them, with picas, ciceros, agates, twips, millimetres, inches and CSS pixels.