WideMath Scientific Calculator

Casio-style scientific calculator in a browser side panel — solve math while you stay on any tab.

Keep a full scientific calculator open beside homework, docs, sheets, or any website — without leaving the page. WideMath Scientific Calculator puts a Casio-style keypad in Chrome’s side panel so you can check work while you study, teach, or work. Click the toolbar icon (or use a keyboard shortcut) and the calculator stays with you as you switch tabs. WHAT YOU GET - Side panel calculator that stays open while you browse other tabs - Optional floating window for a dedicated calculator view - Familiar Casio-style layout inspired by the fx-991ES PLUS workflow - Natural textbook-style display for fractions, powers, and roots - Works offline after install — no account and no cloud login - Responsive layout that fits narrow or wide side panels CALCULATION MODES - COMP — everyday scientific math - CMPLX — complex numbers - STAT — statistics and regression - BASE-N — binary, octal, decimal, hex and bitwise work - EQN — equation solving (including quadratic / simultaneous workflows) - MATRIX — matrix operations (define and use MatA / MatB / MatC) - VECTOR — vector calculations - TABLE — function tables CAPABILITIES - Trigonometry, logarithms, powers, roots, factorials, and combinations - Numerical integration and differentiation - Exact fraction / surd-style results with decimal toggle - SHIFT / ALPHA key layers like a physical scientific calculator - Angle units: Deg / Rad / Grad - Memory variables and calculation history - Mouse and keyboard input KEYBOARD SHORTCUTS - Alt+Shift+C — open the side panel - Alt+Shift+W — open a floating calculator window PRIVACY & PERMISSIONS This extension only uses the sidePanel permission so the calculator can stay open next to your tabs. It does not read your browsing history, does not access website content, does not require an account, and does not sell personal data. Math runs locally in your browser. WHO IT’S FOR Students, teachers, engineers, and anyone who wants a serious scientific calculator next to notes, LMS pages, or research — without switching apps or opening a separate website every time. FULL WEBSITE Prefer the full-page version? Visit: https://widemath.com/scientific-calculator/ TRADEMARK NOTICE Casio and fx-991ES PLUS are trademarks of Casio Computer Co., Ltd. WideMath / Appynox is an independent product and is not affiliated with, endorsed by, or sponsored by Casio.