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Free Calculator Chrome Extensions

Age, BMI, EMI, budget, ROI and unit calculators that open in one click from the toolbar and work without sending your numbers anywhere.

6 extensions · all free · official Chrome Web Store links

All calculators & finance extensions

  • Age Calculator

    Calculators & Finance

    Calculate your exact age instantly with accurate results in years, months, and days. Simple, fast, and offline tool for quick age calculations directly in your browser.

    Free4.7 out of 5, editor score
  • BMI Calculator

    Calculators & Finance

    Calculate your BMI instantly and track your health status with accurate insights. Simple, fast, and offline tool with modern interface, ideal weight range, and calorie estimation.

    Free4.8 out of 5, editor score
  • Budget Planner Pro

    Calculators & Finance

    Track daily expenses, set savings goals, and generate detailed financial reports. A complete personal finance manager that helps you stay on budget every month.

    Free5.0 out of 5, editor score
  • ConvertAll

    Calculators & Finance

    Scientific calculator and unit converter in one tool. Convert measurements instantly with real-time results using a fast, lightweight, and offline solution directly in your browser.

    Free4.8 out of 5, editor score
  • Feature ROI Pro

    Calculators & Finance

    AI-powered ROI Calculator to estimate returns instantly with advanced analytics and scenario modeling. Fast, simple, and privacy-focused tool for quick financial insights directly in your browser.

    Free4.9 out of 5, editor score
  • Loan EMI Calculator

    Calculators & Finance

    Calculate monthly loan EMIs with a full interest and principal breakdown. View complete repayment schedules to plan your finances and compare different loan options.

    Free4.6 out of 5, editor score

No install needed? Try these free web tools

Browser-based AltFTool tools that do a similar job in a tab.

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Questions about these extensions

What are the best free calculators & finance Chrome extensions?

AltFTool publishes 6 free calculators & finance extensions, including Age Calculator, BMI Calculator, Budget Planner Pro. Each has its own page with features, permissions guidance and a Chrome Web Store link.

Are these calculators extensions free?

Yes. Every extension in this category is free to install and does not need an AltFTool account.

Do they work in Edge and Brave?

They are built for Chrome. Chromium-based browsers such as Microsoft Edge, Brave and Opera can usually install Chrome Web Store extensions as well.

Looking for something else?

Browse every AltFTool extension, or search by what you need.