Calculator Online Free

Features of the Free Online Calculator:

• Basic Operations: Addition, subtraction, multiplication, and division with high precision
• Scientific Functions: Trigonometric functions (sin, cos, tan), logarithms (log, ln), and square root
• Advanced Features: Percentage calculations, reciprocal (1/x), power functions (x²), and mathematical constants (π)
• Memory Functions: Store and recall calculations for complex operations
• Calculation History: Keep track of previous calculations and reuse results
• Keyboard Support: Use your keyboard for faster input and calculations
• Mobile Optimized: Perfect layout and functionality on all devices

How to Use:

1. Enter numbers by clicking the number buttons (0-9) or using your keyboard
2. Select an operation: + (add), - (subtract), × (multiply), / (divide)
3. Enter the second number
4. Click "=" or press Enter to see the result
5. Use "AC" to clear all, "CE" to clear current entry, "⌫" to delete last character

Advanced Functions:

• sin, cos, tan: Trigonometric functions (input in degrees)
• log: Base-10 logarithm
• ln: Natural logarithm (base e)
• √: Square root function
• x²: Square the current number
• π: Insert the value of pi (3.14159...)
• %: Convert to percentage
• 1/x: Calculate reciprocal
• ± : Change sign (positive/negative)

Keyboard Shortcuts:

• 0-9: Enter numbers
• +, -, *, /: Basic operations
• Enter or =: Calculate result
• Escape: Clear all
• Backspace: Delete last character
• . (period): Decimal point
• ( ) : Parentheses for complex expressions

Why Choose Our Free Online Calculator:

• Completely Free: No registration, no downloads, no hidden costs
• No Installation Required: Works directly in your web browser
• Cross-Platform: Compatible with Windows, Mac, Linux, iOS, and Android
• Always Available: Access from anywhere with an internet connection
• Regular Updates: Continuously improved with new features
• Privacy Focused: No data collection or tracking