Basic Calculator
A free online calculator for everyday arithmetic — addition, subtraction, multiplication, division, and more. Use the keypad or your keyboard.
Quick Answer
A basic calculator performs everyday arithmetic such as addition, subtraction, multiplication, and division. Enter an expression or use the keypad to calculate the result instantly.
Common Arithmetic Operations
Operations follow standard mathematical order of precedence.
How to Use This Calculator
- 1
Click numbers and operators on the keypad, or use your keyboard.
- 2
Use parentheses ( ) to group parts of an expression.
- 3
Press = or Enter to calculate the result.
- 4
Press C to clear and start a new calculation.
- 5
Press ⌫ or Backspace to delete the last character.
- 6
Use the % key to convert a number to a percentage.
Frequently Asked Questions
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Last updated: June 2026