Editorial & Calculation Accuracy
Methods you can inspect
Calculator pages describe their formula, input conventions, and limitations. Finance tools use nominal annual rates and explicitly stated compounding intervals. Date tools use UTC calendar arithmetic unless comparing IANA time zones.
Testing and rounding
Automated tests check known answers, invalid inputs, conversion round trips, financial boundaries, and date behavior. Display rounding is separate from calculation precision. Tests reduce errors but cannot guarantee every possible scenario.
Health and finance estimates
Health tools use population-based adult estimates. They do not diagnose conditions or prescribe treatment or diet. Financial projections assume the stated rates and contributions and exclude costs unless explicitly included. No medical or financial credential or independent professional review is claimed.
Corrections and sources
Report unexpected answers with inputs and an expected output through the Contact page. Corrections should update method descriptions and regression tests together. Relevant pages link CDC adult BMI guidance and the CFPB amortization explanation.
Editorial responsibility — owner review required
The owner must designate an editorial contact and arrange any specialist review needed before making professional-review claims. We do not display fabricated authors, reviewers, or review dates.
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