Answers to common questions about calculators, resources, privacy, and requests for the new mathcheck library.
Type numbers and operators, then press = for the result. The calculator supports +, -, multiplication, division, percentages, and parentheses. You can also use your keyboard to type expressions directly.
Yes. The site runs entirely in a modern browser, so it works on Chromebooks, tablets, phones, and desktops without installing an app.
No. The public calculator tools and resources are free to use without signing up.
Open the Resources hub to find guides, formulas, and the unit converter. The calculator pages also link to related tools when a next step is useful.
No. Calculations run in your browser and are not stored after you leave the page.
Use the Contact page to submit a request, or email [email protected] with the issue or calculator idea.
Check with your teacher first. mathcheck is a study tool designed for homework help and practice.
Guides, formulas, and converter tools are organized in one hub.
Request a calculator, report an issue, or suggest a better workflow.