1Math: Scientific Calculator & Converter

Scientific calculator extension: 60+ math functions, base converter, statistics, history & custom keyboard shortcuts. Works offline.

Tired of calculator extensions that lose your equation, freeze in one spot on the page, or don't let you see what you're typing? 1Math fixes exactly that. 1Math lives in Chrome's side panel — not a floating popup that blocks your page — so it's always one click away and never in the way. Every keystroke shows in a live expression bar, so you always see your full equation, not just the last digit you entered. ✨ WHY PEOPLE SWITCH TO 1MATH 📖 See your whole equation, always No more losing track mid-calculation. The command-line input bar shows exactly what you've typed — type words like sin, sqrt, or pi and they expand instantly into real operators. 🕓 Real calculation history Every result is saved in the HIST tab. Scroll back through your session and click any past calculation to reload it — never redo work you already did. ⌨️ Keyboard shortcuts you actually control Every hotkey is fully customizable in Settings, so nothing ever conflicts with shortcuts you already use for something else. 📐 4 dedicated modes - CALC — 60+ scientific functions: trig (with inverses & hyperbolics), logs, roots, powers, factorials, permutations & combinations, full scientific notation - STAT — instant mean, population/sample standard deviation, and count from any dataset - BASE-N — built for programmers: convert HEX/DEC/OCT/BIN, bitwise AND/OR/XOR/NOT, bit shifts - HIST — your full calculation tape, one click to reuse 🎨 Built to feel premium A modern glassmorphism interface inspired by real physical calculators — not a plain browser popup. ⚡ Fast, offline, private Works with zero internet connection. 🙌 PERFECT FOR - Students who need to actually see their work, not just the answer - Engineers and programmers who live in HEX/DEC/BIN conversions - Anyone who's been burned by a calculator extension that lost their place mid-problem Open the side panel, calculate, and never lose your equation again. Simple. Fast. Powerful.