Free online basic calculator with standard arithmetic operations. Calculate addition, subtraction, multiplication, and division instantly.
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Real-world calculation examples
Tip: Use keyboard for faster input (0-9, +, -, *, /, Enter, Esc)
Interactive formula breakdown
Sum of two numbers
Difference between numbers
Product of two numbers
Quotient of two numbers
Test your understanding of PEMDAS
Practice with 6 problems to test your understanding.
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A basic calculator performs standard arithmetic operations: addition (+), subtraction (-), multiplication (x), and division (/). Enter numbers using the keypad or keyboard, press an operator, enter the second number, and press equals (=) or Enter to calculate. Use C to clear all or CE to clear the current entry. Supports keyboard shortcuts for faster input.
A basic calculator is a device or application that performs fundamental arithmetic operations: addition, subtraction, multiplication, and division. It is used for everyday mathematical computations such as budgeting, shopping, cooking measurements, and simple math problems. Basic calculators follow standard order of operations (PEMDAS/BODMAS) when evaluating expressions.
A basic calculator performs standard arithmetic operations: addition (+), subtraction (-), multiplication (x), and division (/). Enter numbers using the keypad or keyboard, press an operator, enter the second number, and press equals (=) or Enter to calculate. Use C to clear all or CE to clear the current entry. Supports keyboard shortcuts for faster input.
Enter numbers and operations using the buttons or your keyboard. Press = or Enter to calculate. Use C to clear all or CE to clear the current entry. The display shows your expression and result in real-time.
This calculator follows standard order of operations (PEMDAS/BODMAS): Parentheses first, then Exponents, then Multiplication and Division (left to right), finally Addition and Subtraction (left to right).
Yes! Use number keys (0-9), operators (+, -, *, /), Enter or = for equals, Backspace to delete, Escape or C to clear. Period (.) for decimal point.
The percent button divides the current number by 100. For example, pressing 50 then % gives 0.5. It's useful for calculating percentages in expressions.
Error appears for invalid operations like dividing by zero, invalid expressions, or syntax errors. Press C to clear and start over. Check that your expression is complete and properly formatted.
Last updated: 2025-01-15
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