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Desk reference guides

Quick, accurate reference on paper sizes, print resolution, aspect ratios and international size charts.

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ReferenceA paper sizes chart: A0 to A10 in mm, inches and pixelsA0 to A10 in millimetres, inches and exact pixels at 72, 150 and 300 DPI, with copier scaling and A4 vs Letter.
ExplainerDPI vs PPI, and what resolution you need for printingThe difference between DPI and PPI, and how many pixels you need for every common print size.
ReferenceCommon aspect ratios and where each one is usedThe seven ratios you meet most, with pixel sizes, typical uses and how much each crop costs you.
How-toHow to measure your ring size at homeMeasure your finger with paper or an existing ring, then match it in a US, UK and EU size chart.

Simple Desk Tools

Calculators, size charts and text converters for everyday desk work.

Tools

Paper size converter
DPI calculator
Aspect ratio calculator
Ring, shoe & hat sizes
Fancy text generator
CSV to Markdown
JSON to CSV

Guides

A paper sizes chart
DPI vs PPI
Common aspect ratios
Measure ring size at home
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