The method behind the calculation
Each tool explains its formula, starting example and conditions on its own page. For tools that depend on local rules, check the stated period and sources. Interest rates, pay amounts and tax rates supplied by a user are not current market data.
Understanding the limits
Exam tools separate net-score calculations from estimated exam scores. An estimate is not an official result or a promise of exact accuracy for every candidate. Financial tools calculate the assumptions you enter; health tools provide general numerical indicators. Interpret results within the scope stated for each tool.
Graphs and symbolic algebra
2D and 3D plots use numerical sampling over finite ranges. Small features or singularities may not appear, and 3D surfaces or volume displays can be approximate. Symbolic algebra distinguishes exact expressions, numerical approximations and operations it cannot resolve. Simplifying an expression does not remove the domain restrictions of the original expression.
Tools that run on your device
Values entered in calculation fields are processed in your browser; application code does not send these inputs to a server to calculate them. Saved calculators and graph projects stay in this browser’s local storage. Clearing browser data removes these saved items. Sharing a graph link also shares the project content carried by that link.
Privacy choices
The hosting service may process technical connection data when you open a page. You can manage your choice for optional visit measurement through the privacy settings. External reference links and email services have their own terms.
Free access and advertising
You do not need to pay or create an account to use the tools. Advertising may support continued free access. Ad display depends on approval by the service used and applicable privacy conditions; advertising content does not change calculation results.
Read more about our approach: Methods and accuracy · Privacy.
Contact and error reports
To report a problem or suggest an improvement, include the full page address, the operation you selected, the result you expected and the result you received. Use sample values without personal information so the issue can be reproduced. Hide personal information in any screenshot you share.
Email: latecafegames@gmail.com
Sending an email means your address and message are processed through the email service. Do not send passwords, identity numbers, banking details or other sensitive information.