Standard Calculator
A clean, fast standard calculator for everyday arithmetic: addition, subtraction, multiplication, and division.
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What is a Standard Calculator?
A standard calculator performs the four basic arithmetic operations: addition, subtraction, multiplication, and division. It also supports percentage calculations and positive/negative sign toggling.
Features
- Digits 0–9 with decimal point
- Four operations: +, −, ×, ÷
- Percentage (%) key
- Sign toggle (±)
- Backspace to delete last digit
- Clear (C) to reset
- Expression display showing the current operation
How to use this tool
Click the buttons just like a physical calculator. The display shows your current input and the previous operand. Press = to calculate the result.
Example use cases
- Shopping: Quick arithmetic for splitting a bill
- Finance: Calculate percentage of a budget
- Everyday math: Any simple calculation without reaching for your phone