How to Use the Calculator App in Windows 11

The Calculator app in Windows 11 is a versatile tool that can perform basic arithmetic, scientific calculations, currency conversions, and more. Follow these steps to use the Calculator app effectively:

Step 1: Open the Calculator App

  1. Click on the Start menu (Windows icon) at the bottom-left corner of your screen.
  2. Type "Calculator" in the search bar and click on the Calculator app to open it.

Step 2: Basic Mode

  1. Default View: When you open the Calculator app, it starts in Basic mode, which you can use for simple arithmetic operations.
  2. Perform Calculations: Use the on-screen number pad or your keyboard to enter numbers and operators (+, -, *, /). Click the Equals (=) button or press Enter on your keyboard to see the result.

Step 3: Switching Modes

  1. Navigation Menu: Click on the Menu icon (three horizontal lines) in the top-left corner to open the navigation menu.
  2. Select Mode: Choose from various modes depending on your needs:
    • Standard: Basic arithmetic operations.
    • Scientific: Advanced mathematical functions, such as trigonometry, logarithms, and exponents.
    • Graphing: Plot and analyze graphs for mathematical functions.
    • Programmer: Binary, octal, decimal, and hexadecimal calculations.
    • Date Calculation: Calculate the difference between dates or add/subtract days from a specific date.
    • Converter: Convert units such as currency, volume, length, weight, temperature, energy, area, speed, time, power, data, pressure, and angle.

Step 4: Using Scientific Mode

  1. Switch to Scientific Mode: Open the navigation menu and select Scientific.
  2. Perform Calculations: Enter numbers and use the scientific functions (sin, cos, tan, log, ln, etc.) available on the expanded keypad. Press the Equals (=) button to see the result.

Step 5: Using Graphing Mode

  1. Switch to Graphing Mode: Open the navigation menu and select Graphing.
  2. Enter Function: Type a mathematical function (e.g., y = x^2) into the input field.
  3. Plot Graph: Click on Graph to plot the function. You can add multiple functions and analyze intersections, maxima, minima, and more.

Step 6: Using Programmer Mode

  1. Switch to Programmer Mode: Open the navigation menu and select Programmer.
  2. Perform Calculations: Enter numbers and perform calculations in binary, octal, decimal, or hexadecimal. Use the bitwise operators and logical functions as needed.

Step 7: Using Date Calculation Mode

  1. Switch to Date Calculation Mode: Open the navigation menu and select Date Calculation.
  2. Calculate Difference: Choose Difference between dates and enter two dates to calculate the time interval between them.
  3. Add/Subtract Days: Choose Add or subtract days and enter a date along with the number of days to add or subtract.

Step 8: Using Converter Mode

  1. Switch to Converter Mode: Open the navigation menu and select Converter.
  2. Choose Conversion Type: Select the type of conversion you want to perform (e.g., Currency, Volume, Length).
  3. Enter Values: Input the value you want to convert in the appropriate field. The app will automatically display the converted value in the selected unit.

Additional Tips

  • Keyboard Shortcuts: Use keyboard shortcuts to quickly perform calculations. For example, use Alt + 1 for Standard mode, Alt + 2 for Scientific mode, and so on.
  • Memory Functions: Use the memory functions (MC, MR, M+, M-, MS) to store and recall values during calculations.
  • History: The Calculator app keeps a history of your calculations. You can view previous calculations by clicking on the History icon.


You have successfully learned how to use the Calculator app in Windows 11. Whether you need to perform basic arithmetic, advanced scientific calculations, or unit conversions, the Calculator app provides a comprehensive set of tools to meet your needs. Experiment with the different modes and features to make the most of this versatile app.