Basic Calculator - Online Math Calculator

Free Online Basic Calculator

Our free online basic calculator provides a clean, intuitive interface for performing essential mathematical operations. Whether you need to add, subtract, multiply, or divide numbers, this calculator offers a user-friendly experience with both mouse and keyboard support.

Key Features

Basic Operations: Addition (+), subtraction (-), multiplication (×), and division (÷)
Decimal Support: Handle decimal numbers with precision
Keyboard Shortcuts: Use your keyboard for faster calculations
Clear Function: Reset the calculator with one click
Backspace: Delete the last entered digit
Responsive Design: Works perfectly on desktop and mobile devices
Dark Mode Support: Automatically adapts to your system theme

How to Use the Calculator

Enter Numbers: Click the number buttons or use your keyboard to input numbers
Choose Operation: Click the operation buttons (+, -, ×, ÷) or use keyboard shortcuts
Calculate: Press the equals button (=) or hit Enter to get your result
Clear: Use the 'C' button or press Escape to clear the calculator

Keyboard Shortcuts

For faster calculations, you can use these keyboard shortcuts:

Numbers: 0-9 keys for number input
Operations: +, -, *, / keys for mathematical operations
Decimal: . (period) key for decimal point
Equals: Enter or = key to calculate
Clear: Escape, C, or c key to clear

Mathematical Operations

Our calculator supports the four basic mathematical operations:

Addition (+): Adds two or more numbers together
Subtraction (-): Subtracts one number from another
Multiplication (×): Multiplies two or more numbers
Division (÷): Divides one number by another (handles division by zero)

Common Use Cases

Quick Math: Fast calculations for daily tasks
Budgeting: Calculate expenses and income
Shopping: Calculate discounts and totals
Work: Basic calculations for reports and presentations
Education: Practice basic arithmetic operations

Frequently Asked Questions

Can I use keyboard shortcuts with this calculator?

Yes! You can use your keyboard for all operations. Use number keys (0-9) for input, +, -, *, / for operations, Enter or = for equals, and Escape or C to clear.

Does the calculator handle decimal numbers?

Absolutely! The calculator fully supports decimal numbers. You can input decimal values using the decimal point button or the period key on your keyboard.

What happens if I divide by zero?

The calculator handles division by zero gracefully and will display 0 as the result to prevent errors.

Is this calculator free to use?

Yes, this basic calculator is completely free to use with no registration required. You can perform unlimited calculations.

Does the calculator work on mobile devices?

Yes, the calculator is fully responsive and works perfectly on desktop computers, tablets, and mobile phones. The interface adapts to different screen sizes.

Can I perform chain calculations?

Yes! You can perform multiple operations in sequence. For example, you can calculate 5 + 3 × 2 by entering the operations step by step.