Math
Calculator
A five-operation calculator. No graphs, no functions, no clutter.
0-9 numbers
+-*/ operators
Enter equals
Esc Clear
⌫ delete
What does Calculator?
A basic calculator for everyday arithmetic — addition, subtraction, multiplication, division and percentages — right in your browser.
How to use Calculator?
- Type numbers and operators with your keyboard or click the buttons.
- Press = or Enter to get the result.
- Press C or Esc to reset and start a new calculation.
Key features
- Full keyboard support — digits, operators, Enter and Backspace
- Direct percentage calculation with the % button
- Prevents division by zero and shows a clear error message
Frequently asked questions
Can I use the keyboard?
Yes. Press digits, +, -, *, /, %, Enter and Backspace — everything works.
What happens when dividing by zero?
The calculator shows an error message and lets you immediately start a new calculation.
Is this tool free?
Yes, this tool is completely free and requires no registration.
Is my data saved?
No. All calculations happen in your browser only — no data is sent to any server.