Basic Calculator

Free online basic calculator with standard arithmetic operations. Calculate addition, subtraction, multiplication, and division instantly.

Formula:Standard arithmetic: +, -, ×, ÷

Current Calculation

Display

0

Try These Common Calculations

Real-world calculation examples

 
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Tip: Use keyboard for faster input (0-9, +, -, *, /, Enter, Esc)

Order of Operations

Interactive formula breakdown

PEMDAS: Parentheses → Exponents → Multiply/Divide → Add/Subtract
+
Addition

Sum of two numbers

-
Subtraction

Difference between numbers

×
Multiplication

Product of two numbers

÷
Division

Quotient of two numbers

Practice Order of Operations

Test your understanding of PEMDAS

Practice with 6 problems to test your understanding.

Keyboard Shortcuts

0-9

Numbers

+ - * /

Operators

Enter

Calculate

Esc

Clear

Current Calculation

Display

0

?How to Use This Basic Calculator

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.

What is a Basic Calculator?

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.

Key Facts About Basic Calculators

  • Basic arithmetic operations: addition (+), subtraction (-), multiplication (x), division (/)
  • Order of operations (PEMDAS): Parentheses, Exponents, Multiplication/Division, Addition/Subtraction
  • Keyboard shortcuts: number keys 0-9, operators +, -, *, /, Enter for equals, Escape to clear
  • Percent (%) divides the current number by 100
  • C clears all entries; CE clears only the current entry
  • Division by zero is undefined and returns an error
  • Calculation history shows previous operations for reference
  • Works on any device with a web browser - no installation required

Quick Answer

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.

Frequently Asked Questions

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