Complete standard calculator
Add, subtract, multiply, divide, calculate percentages and square roots, change signs, and continue calculations using previous results.
Office Calculator v6.0
Your everyday calculator, directly in Chrome.
Perform standard arithmetic, review calculation history, copy results, use your keyboard, and calculate discounts, taxes, markup, or profit margins without leaving the page you are working on.
Free · Works offline · No requested permissions · No data collection
Built by OfficeCalculator.netStandard modeArithmetic, percent, square root, memory, and history.
Business modeTax, discounts, markup, margin, and percentage change.
Keyboard readyNumbers, operators, Enter, Backspace, Delete, and Escape.
Local processingCalculations stay in your browser.
Core features
Small enough to stay simple. Powerful enough for daily work.
The extension keeps related calculation tools together while maintaining one clear purpose.
Business percentage tools
Calculate percentage increase or decrease, discounts, tax, markup, profit margin, selling price, cost, and profit.
Calculation history
Review recent calculations, reuse a result with one click, or clear the local history whenever you choose.
Keyboard support
Use number and operator keys, Enter, Backspace, Delete, Escape, and the dedicated square-root shortcut.
Theme choices
Use light, dark, or system appearance. Your preference is retained locally inside the extension.
Copy results
Copy the current result and paste it into documents, spreadsheets, emails, invoices, or other work.
Privacy by design
No account. No analytics. No browsing access.
Office Calculator requests no Chrome permissions. Calculations are processed locally, and settings such as theme, memory, and recent history stay in the extension’s local browser storage.
- No access to browsing history, open tabs, website content, location, contacts, or identity.
- No advertising, behavioral tracking, analytics SDK, or remote executable code.
- No calculation data is sent to OfficeCalculator.net or any third party.
- The optional OfficeCalculator.net link opens only when you choose it.
Ready to calculate faster?
Check the Chrome Web Store publication status or review the installation instructions.