Office Calculator

A fast, private office calculator with business percentage tools, history, memory, themes, and keyboard support.

Office Calculator gives you a fast and convenient calculator directly from the Chrome toolbar. Perform everyday calculations without opening another website or switching between tabs. The extension includes standard calculations, business percentage tools, calculation history, memory controls, keyboard support, and customizable themes. STANDARD CALCULATOR • Addition, subtraction, multiplication, and division • Percentage calculations • Square root • Positive and negative number control • Backspace, clear entry, and clear all • Memory clear, recall, add, and subtract • Support for decimal and large numbers • Clear error messages BUSINESS TOOLS Calculate common percentage-based values, including: • Percentage increases and decreases • Discounts and final prices • Tax amounts and totals • Markup • Profit margin • Cost, selling price, and profit CALCULATION HISTORY Review recent calculations and reuse a previous result when needed. Calculation history is saved locally in the browser and can be cleared at any time. KEYBOARD SUPPORT Use number keys and calculation operators directly from your keyboard. Supported controls include: • Enter or equals to calculate • Backspace to remove the last digit • Delete to clear the current entry • Escape to clear the calculator THEMES Choose between light, dark, and system themes. Your preference is saved locally. PRIVACY Office Calculator does not require an account and does not request access to browsing activity. Calculations, history, memory values, and theme preferences remain locally inside the extension. No calculation data is transmitted to an external server. The extension contains no advertising, analytics tracking, or remotely hosted executable code. WORKS OFFLINE The calculator works without an internet connection. An optional link to OfficeCalculator.net provides access to additional calculation tools.