About this calculator

This project exists to remove guesswork from a common classroom and spreadsheet question: what is A percent of B percent when both are expressed as percentages of the same whole?

The interface is intentionally terminal-inspired so the mental model feels like a small deterministic tool, not a marketing landing page. The implementation stays static so you can inspect what runs in your browser.

If you spot an edge case we should document better, use the contact page. We keep responses practical and focused on calculator accuracy and clarity.