Utility
PDF Toolbox
Merge, split, compress and convert PDFs in your browser, without uploading your files.
Calculator Hive
Free calculators for finance, health, math, construction and more, each with the formula and a worked example.
What you can do here
Finance, business, health, science, math, construction, cooking, and more. Every page explains the formula, shows a worked example, and runs entirely in your browser. No signup, nothing sent anywhere.
More in Utility
Utility
Utility Hive
Use free online tools for everyday work: calculators, converters, document tools and more.