Frequently Asked Questions
Everything you need to know about using ScientificCalculators.site.
Yes. All 107+ calculators on ScientificCalculators.site are completely free. No account, subscription, or payment is ever required.
Every calculator uses established mathematical formulas implemented in JavaScript. Inputs are validated in real time, and results are computed dynamically — never pre-filled or hardcoded.
Yes. The entire platform is fully responsive. Calculator buttons and inputs are sized for touch screens with a minimum 44px tap target.
No. All calculations happen locally in your browser. We only save your theme preference, favorites, and recently used calculators in your device's local storage — never on a server.
Yes. Every calculator includes Copy, Print, and Share buttons. Copy sends results to your clipboard, Print generates a clean printable report, and Share uses your device's native sharing when available.
Visit our Contact page and select "Calculator Request" as the subject. We regularly add new tools based on user feedback.
Yes. Click the moon/sun icon in the header to toggle dark mode. Your preference is saved automatically and respects your system setting on first visit.
Please contact us with the calculator name, the values you entered, the result you received, and the result you expected. We investigate all reports promptly.