Virtual Calculator

Virtual calculator for Chrome — popup or floating window, normal and scientific modes, history tape and full keyboard input.

Virtual Calculator puts a fast, beautiful calculator one click away in your Chrome toolbar — a popup calculator that opens instantly on any page, does the math, and gets out of your way. Switch between a clean Normal mode for everyday arithmetic and a full scientific calculator mode with trig, logs, powers, roots, factorial and memory keys. No tabs to hunt for, no website to load — this online calculator lives in your browser and works completely offline. 🧮 What This Virtual Calculator Does ➡️ Opens as a popup calculator right from the toolbar — one click, instant math ➡️ Floating calculator mode — pop it out into its own window that stays open while you click around and work ➡️ Normal mode for quick everyday sums: + − × ÷, percent, sign toggle and backspace ➡️ Scientific calculator mode: sin cos tan and their inverses, log, ln, eˣ, 10ˣ, x², x³, xʸ, √, ∛, 1/x, x!, π and e ➡️ DEG/RAD toggle for trigonometry — exactly like an on-screen exam calculator ➡️ Full expression line with operator precedence and parentheses, plus a live result as you type ➡️ Complete keyboard support — type the whole expression, hit Enter, done ➡️ History tape remembers your last 50 calculations; click any entry to reuse the result ➡️ Copy button puts the result on your clipboard in one click 👥 Who Finds This Calculator Extension Useful 1️⃣ Students practising for on-screen calculator exams like GATE — the scientific layout will feel instantly familiar 2️⃣ Anyone shopping online who wants a quick percent-off calculator beside the cart 3️⃣ Accountants and analysts double-checking numbers without leaving the browser 4️⃣ Engineers and science students who need a scientific calculator in the browser 5️⃣ Developers doing quick powers-of-two and precedence-heavy calculations 6️⃣ Teachers and pupils who want a virtual calculator available on any webpage 7️⃣ Remote workers tired of hunting for the system calculator app 8️⃣ Anyone who keeps typing calculations into the search bar and wants something better ✨ Why People Like This Popup Calculator 🔹 Instant — the popup opens fast and is ready for keyboard input immediately 🔹 A proper expression calculator: 2+3×4 is 14 here, not 20 🔹 Live preview shows the running result while you type 🔹 Clean, readable display that avoids floating-point junk like 0.30000000000000004 🔹 History tape means you never lose an intermediate result 🔹 The floating window carries your calculation over and remembers its size and position 🔹 Dark mode and light mode, with your choice remembered 🔹 Your mode, angle unit and history are saved between sessions 🔹 100% offline — no account, no server, no tracking ⚙️ Features Inside This Online Calculator ⭐ Two modes — Normal and Scientific — toggled at the top, choice persisted ⭐ Float button in the header, plus an "Always open as floating window" setting ⭐ Memory keys: M+, M−, MR, MC, with a memory indicator in the display ⭐ Percent key that works the way you expect: 200 + 10% = 220 ⭐ Factorial, powers and roots with correct operator precedence ⭐ Parentheses with smart auto-close — sin(30 evaluates as sin(30) ⭐ ± sign toggle, decimal point guard, backspace that deletes whole functions ⭐ Copy-result button with a little "Copied" confirmation ⭐ Thin, tidy scrollbars and a compact popup that never feels cramped 🔧 Behind-the-Scenes Tech (Explained Simply) 🎯 A real math engine — tokenizer, parser and evaluator — not a risky eval() hack 🎯 Full operator precedence and right-associative powers, like a proper scientific calculator 🎯 Sensible rounding to 12 significant digits so binary float noise never reaches the display 🎯 Everything saved locally with Chrome Storage — your calculations never leave your device 🎯 Manifest V3 — the current Chrome extension standard, secure and up to date 🎓 A Note for GATE Aspirants India's GATE exam replaces physical calculators with an on-screen virtual calculator, and the best way to avoid losing marks is to practise with one until it feels natural. This calculator extension's scientific mode keeps the same spirit — on-screen keys, DEG/RAD switching, inverse trig, logs, roots and memory keys — so your daily browser math doubles as exam practice. (It is a general-purpose calculator, not an official GATE tool.) 💡 Helpful Tips ✅ Just start typing — the popup listens to your keyboard from the moment it opens ✅ Press Enter for equals, Backspace to erase, Esc to clear everything ✅ Use the history tape as a scratchpad: click any old result to drop it into a new calculation ✅ M+ your subtotal, keep calculating, then MR to bring it back ✅ Doing a long series of calculations? Pop it out as a floating calculator beside your spreadsheet ✅ Switch to RAD before doing calculus-style trig, back to DEG for geometry ✅ The copy button grabs the exact result — paste it straight into spreadsheets or forms ❓ FAQ ► Do I need an account? No — no account, no sign-up and no ads. Install it and start calculating. ► Does it work offline? Yes. Everything runs locally in your browser; no internet needed after install. ► Can it stay open while I work? Yes — open it as a floating window with the float button in the header. The floating calculator stays on screen when you click away, keeps your in-progress calculation, and a setting can make the toolbar icon always open it that way. ► Is it a scientific calculator too? Yes — switch to Scientific mode for trig, logs, powers, roots, factorial, π, e and memory keys. ► Does it follow operator precedence? Yes. 2+3×4 = 14, powers are right-associative and parentheses work as expected. ► Can I use my keyboard? Fully — digits, operators, parentheses, Enter for =, Backspace, and Esc to clear. ► Where is my calculation history stored? On your device, in Chrome's local storage. Nothing is transmitted anywhere. ► Is this the official GATE virtual calculator? No — it's a general-purpose calculator extension, but the scientific mode is great for getting comfortable with on-screen calculators used in exams like GATE. 🚀 How to Get Started 1️⃣ Install the extension and pin Virtual Calculator to your toolbar 2️⃣ Click the icon — the popup calculator opens instantly 3️⃣ Type or click your expression and press Enter 4️⃣ Flip to Scientific mode whenever you need trig, logs or powers 5️⃣ Open the history tape to reuse any of your last 50 results 6️⃣ Want it always on screen? Hit the float button — or turn on "Always open as floating window" That's all there is to it — a fast, private, keyboard-friendly virtual calculator that's always one click away in Chrome. Hope it saves you a few trips to the system calculator every day! 🙌