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Online Calculator
Free calculator with square, square root, percentage, and negative numbers. Full keyboard support including numpad.
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0-9 Numbers
+ - * / Operations
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. Decimal
s Square (x²)
r Square Root (√)
% Percentage
n Toggle Sign (+/-)
About Online Calculator
A free online calculator with advanced functions including square, square root, percentage, and negative number support. Full keyboard support for efficient calculations.
Advanced Operations
- • Square (x²): Multiply a number by itself. Example: 5² = 25
- • Square Root (√): Find the number that, when squared, equals the input. Example: √25 = 5
- • Percentage (%): Convert to decimal form. Example: 50% = 0.5
- • Toggle Sign (+/-): Switch between positive and negative. Example: 5 → -5
Usage Examples
- • 15% of 200: 200 × 15% = 30
- • Square a number: 8 → x² = 64
- • Square root: 49 → √ = 7
- • Negative numbers: 10 → +/- → -10 → + 5 = -5
- • Chain operations: 5 → x² → + 10 = 35
Error Handling
- • Division by zero: Displays "Infinity"
- • Square root of negative: Displays "Error"
- • Number overflow: Displays "Infinity"