About Clear Math Kit
Useful numbers. Less noise.
Clear Math Kit is an independent educational resource built around a simple idea: everyday calculations should feel calm, understandable, and easy to check.
What we make
We publish free calculators and original guides for common percentage questions: sale prices, tips, changes, margins, test scores, goal progress, and more. Every tool shows the calculation so readers can sense-check the answer instead of treating it as a black box.
Who writes and reviews the site
The Clear Math Kit Editorial Team researches questions, prepares worked examples, checks formulas, and reviews every guide before publication. Our editorial policy explains the standards used for sourcing, automation, corrections, and updates.
How we approach advertising
Advertising may support free access to the tools and writing. Ads are clearly labelled, kept away from interactive calculator controls, and do not influence editorial conclusions. We do not create empty pages solely to display ads.
What the site cannot do
These resources provide general educational information. They are not a substitute for financial, tax, legal, medical, accounting, or other professional advice. Important figures should be checked against authoritative sources.