How to Use the Standard Calculator
Perform basic arithmetic calculations with memory functions in a familiar desktop-style interface.
Steps
- Use your mouse to click the on-screen buttons, or use your physical keyboard's number pad.
- Input your numbers and operations (addition, subtraction, multiplication, division).
- Press "Enter" or the "=" button to see the result.
- Use the memory keys (M+, M-, MR, MC) to store and recall numbers during complex calculations.
About This Tool
This is a pure JavaScript implementation of a standard 10-key calculator. It supports chaining operations, backspacing, percentage calculations, and avoids common floating-point math errors.
FAQs
1. Can I use my physical keyboard?
Yes. The tool fully supports keyboard inputs, including the Numpad, for fast typing. Press "Backspace" to delete the last digit.
2. How do the Memory keys work?
M+ adds the current number to memory, M- subtracts it. MR recalls the saved number to the screen, and MC clears the memory entirely.
3. Does it have a history feature?
Yes. The calculator shows the current mathematical equation right above the main display area so you can track your ongoing calculation.