Useful tools, clear boundaries
A focused workbench
EverydayCalc exists for ordinary arithmetic: a shelf price, a grade, a percentage, or a proportion. We emphasize labels and worked examples over advanced menus. A transparent calculation makes it easier to spot an input mistake and understand why a result changed.
What you can do here
The current collection includes percentage calculator, percentage change, unit price comparison, weighted grade, ratio scaling. Each tool has its own page, a worked example, and a clear explanation of its method.
How results are produced
The site uses JavaScript for local calculations and plain HTML for guides and navigation. No account is needed. We label assumptions and check inputs, while acknowledging that floating-point arithmetic, rounding, and real-world conditions affect how a result should be interpreted.
Corrections and feedback
If you find an error, tell us which tool you used, the inputs you entered, and the result you expected. The contact page prepares an email in your own email app. Please do not include private identifiers, passwords, or confidential documents.