In one line
The tools give careful estimates and exact conversions; they do not give advice, and no result on this site replaces a professional who knows your situation.
Finance tools
Estimates for planning, not financial advice, and we are not a licensed financial adviser. Lenders add costs a calculator cannot know about — insurance, origination, risk surcharges, so treat any figure as a starting point, never as an offer. Formulas follow published standards.
Health tools
General information, not a diagnosis and not a substitute for a clinician. BMI, calorie and due-date figures are population-level formulas and say little about an individual. If a number worries you, that is a reason to talk to a doctor, not to recalculate.
Conversions and everything else
Unit conversions implement the defining standard and cite it at the foot of the page. Where a result depends on an assumption, the assumption is stated on the page. Randomness tools use your browser's own generator; they are fair, not certified for gambling or cryptographic use.
Advertising and external links
Ads are clearly labelled and filled by a third-party advertising network; advertisers have no influence on tools, results or texts, and an ad is not an endorsement. External links, including source citations, lead to sites we do not control and are not responsible for.