About Calnex
Free browser tools, calculators and unit conversions, with published definitions, examples and a public feedback channel.
What Calnex provides
Calnex provides free tools for formatting data, working with text and converting units, alongside calculators for everyday, mathematical and scientific tasks. Each tool should be used with its stated units, supported modes and limits.
Maintenance and corrections
The Calnex project maintains this website and its calculation engines. Method notes explain assumptions and checks. Users can report errors through the public calnex-feedback repository; include the page URL, reproducible inputs and a relevant reference.
Sources and scope
Sources are linked where they support a definition or formula. A source link does not imply that its publisher endorses or reviews Calnex. Regional unit conventions and estimates are identified on the applicable pages.