Calculator selection
We prioritize tools with practical value: finance, salary, tax, business, construction, health and everyday planning. We remove or retire calculators that are duplicated, too thin or not useful enough.
Editorial Policy
Our goal is to publish calculators that are useful, transparent and easy to verify.
Formulas and assumptions
Each major calculator should explain the formula or logic behind the result. When inputs depend on region, tax rules, fees or market conditions, the page should state that the result is an estimate.
Corrections
If a user reports an issue, we review the inputs, expected result and available sources. Corrections are prioritized when a formula error, stale assumption or confusing label can affect decisions.
No personalized advice
Our content is educational. We do not provide personalized financial, legal, tax, medical or investment advice. Users should verify important decisions with qualified professionals.
Advertising separation
Advertising does not decide calculator formulas, rankings or editorial content. Ads, if shown, are separate from the calculation result and should not interfere with using the tool.