Informational use
Calculators provide mathematical results or estimates from the inputs and assumptions stated. They do not provide personalised medical, financial, investment, tax, legal or engineering advice. Obtain qualified advice for decisions that require it.
Check applicability and accuracy
Default values are examples. Confirm units, input values, rate conventions and relevant local rules. Software checks cannot cover every case. The service may contain errors, become unavailable or change as issues are corrected. Do not rely on a single calculation for a consequential decision.
Health and financial tools
Health estimates do not diagnose conditions or prescribe care. Pregnancy and cycle dates are approximate and are unsuitable for contraception. Financial projections do not guarantee returns, loan offers, tax treatment or future income. Refer to each page’s stated limitations.
External sources and exchange rates
External websites and rate services have their own terms and policies. A source link is not an endorsement of this website. Reference exchange rates are indicative and can differ from transaction rates and charges.
Sharing results
Shared result links can expose the inputs in the URL. Do not include sensitive information. See the privacy statement for details.
Questions and errors
Use the contact page to raise an issue. These terms describe the service and do not exclude rights or obligations that cannot be excluded under applicable law.