Basic Calculator
A clean, fast calculator for everyday arithmetic — addition, subtraction, multiplication, and division.
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Notes
How to Use
- Enter the first number using the digit buttons.
- Press an operator button: ÷, ×, −, or +.
- Enter the second number.
- Press = to see the result.
Special Buttons
| Button | Action |
|---|---|
| C | Clear everything — resets to zero |
| ± | Toggle the sign of the current number (positive ↔ negative) |
| % | Divide the current number by 100 (e.g. 75 → 0.75) |
| . | Insert a decimal point |
Frequently Asked Questions
How do I calculate a percentage using this calculator?
Enter the number and press % to convert it to a decimal. For example, to find 20% of 80: type 80, press ×, type 20, press %, press =. Result: 16.
What does ± do?
It toggles the sign of the current number. Pressing ± on 50 gives −50. Pressing it again returns 50.
Can I chain multiple operations?
Yes. After pressing an operator, the running result is stored. You can keep pressing operators to chain calculations (e.g. 5 + 3 × 2 will chain as (5+3)×2 = 16).