Simple Online Calculator
Perform basic math operations with our easy-to-use calculator. Add, subtract, multiply, and divide numbers instantly. Perfect for quick calculations and everyday math needs.
How to Use the Calculator
Enter Numbers
Click the number buttons (0-9) to enter your first number. You can also use your keyboard to type numbers directly into the calculator.
Choose Operation
Select the math operation you want to perform: addition (+), subtraction (−), multiplication (×), or division (÷). The operation will be shown in the history display.
Enter Second Number
Type your second number using the number buttons. You can use the decimal point (.) for decimal numbers and backspace (⌫) to correct mistakes.
Get Result
Press the equals button (=) or Enter key to calculate the result. Use C to clear everything or CE to clear the current entry only.
Frequently Asked Questions
Can I use keyboard shortcuts with this calculator?
+Yes! You can use your keyboard for all calculator functions. Type numbers (0-9), use +, -, *, / for operations, Enter or = for equals, Escape or C for clear, Backspace for delete, and period (.) for decimal point. This makes calculations faster and more convenient.
What's the difference between C and CE buttons?
+C (Clear) resets the entire calculator, clearing all numbers, operations, and history. CE (Clear Entry) only clears the current number you're typing, keeping the previous operation and first number intact. Use CE to fix typing mistakes without starting over.
How many decimal places can the calculator handle?
+The calculator can handle up to 15-16 significant digits, which is the standard precision for JavaScript numbers. Results are automatically rounded to prevent display issues. For very large numbers or high-precision calculations, consider using specialized scientific calculators.
What happens if I divide by zero?
+Division by zero will display "Error" as it's mathematically undefined. The calculator will automatically reset after showing the error, allowing you to start a new calculation. This prevents the calculator from getting stuck in an invalid state.
Does this calculator work offline?
+Yes! Once the page loads, the calculator works entirely in your browser without needing an internet connection. All calculations are performed locally on your device, ensuring fast response times and privacy. No data is sent to any servers.