Disclaimer

Last updated September 26, 2026

Educational and planning use. Results are computed in good faith but may contain errors, rounding differences or simplifying assumptions. Verify anything important.

Calculator and tool results

Our calculators use standard formulas and floating-point arithmetic. Very large, very small or repeating numbers are rounded for display. Angle functions use degrees or radians as shown on screen.

Not professional advice

Finance tools (for example mortgage and compound-interest estimators) ignore taxes, fees, insurance, rate changes and other real-world factors. Nothing here is financial, tax, legal, investment or academic advice, and we are not a licensed adviser. For decisions with real consequences, consult a qualified professional or your lender.

Educational content

Explanations are written for general learning and may not match your course, exam board or teacher's method. Follow your instructor's requirements for graded work.

Third-party content

Some pages may include content, ads or interactive features supplied by third parties. We do not control them and are not responsible for their content or practices.

No liability

We are not responsible for loss arising from reliance on our results. See the Terms of Use.