Simple Calculator

A free, offline calculator popup for students and everyday use. Basic and scientific modes with local history.

Calculate without leaving your current tab. Simple Calculator is a free, practical calculator that opens directly from your Chrome toolbar. Use it while browsing, shopping, studying, working, or chatting with ChatGPT—without opening another website or creating an account. EVERYDAY CALCULATIONS • Addition, subtraction, multiplication and division • Decimals and percentages • Full keyboard input • Copy and paste support SCIENTIFIC MODE • Sin, cos and tan with inverse functions • DEG and RAD switching • Logarithms, square roots and powers • Squares, cubes, factorial, π and e • Memory controls and more HISTORY AND QUICK NOTES • View your recent calculations • Click an earlier result to reuse it • Keep numbers, totals and reminders in the built-in note • Your history and notes are saved locally PRIVATE AND OFFLINE • Completely free • No advertisements • No account required • No analytics • No network requests • Works without an internet connection • Your calculations and notes stay on your device Choose between light and dark themes and keep a useful calculator only one click away. Simple Calculator works alongside ChatGPT and other websites; it does not require or access your ChatGPT account. Free offline calculator with basic and scientific modes, history, sticky notes, and light/dark themes. PRIVACY FIRST Simple Calculator runs entirely on your device. There are no ads, no accounts, no analytics, and no network requests of any kind. Your history and notes are stored locally with Chrome's storage API and are never sent anywhere. Full privacy policy: see the "Privacy practices" tab or https://www.nhrsoft.com/simple-calculator/privacy-policy.html Made by NHR Soft (www.nhrsoft.com). Language:English Data usage - Does not collect or transmit any of the listed data types (personal info, health info, financial info, authentication info, personal communications, location, web history, user activity, website content). Everything Simple Calculator stores stays in `chrome.storage.local` on the user's own device. - Not sold or transferred to third parties. - Not used for purposes unrelated to the extension's single purpose. - Not used to determine creditworthiness or for lending.