Editorial policy

Last updated September 26, 2026

Our standard

Every tool should give a correct answer and show why. Each tool page documents its formula, its assumptions and worked examples, and shows when it was last reviewed.

How we build and check tools

• Formulas come from standard textbooks and public references (for example the quadratic formula, the amortization payment formula and the compound-interest formula).
• The calculation engine is covered by automated tests, and each tool is checked against hand-worked examples before release.
• Explanations are written for learners: plain language first, then the formal statement.

Updates and corrections

We review tools whenever we change them and at least once a year. If you find an error, email [email protected] with the page URL, the inputs and the result you expected. We investigate promptly, fix confirmed errors and update the page's review date.

Independence and advertising

SolveCalcPro is funded by advertising. Ads are labelled, appear separately from tools and explanations, and never influence results or content. We do not accept payment to change a result or an explanation.

Who is responsible

Content is produced and reviewed by the SolveCalcPro editorial team at Hindustan Prime. We are not a licensed financial or tax adviser; see the disclaimer.