Basic Calculator

Simple online calculator for basic arithmetic operations - addition, subtraction, multiplication, and division.

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Basic Calculator Features

This simple calculator performs basic mathematical calculations including:

  • Addition (+)
  • Subtraction (-)
  • Multiplication (×)
  • Division (÷)
  • Decimal operations
  • Order of operations (PEMDAS/BODMAS)
  • Parentheses for grouping
  • Calculation history

Calculator Tips

  • Use parentheses to control calculation order
  • Multiplication and division have higher priority than addition and subtraction
  • Press "AC" to clear everything, "C" to clear current input
  • Use "⌫" to delete the last entered character

How to Use the Basic Calculator

Basic Operations

The calculator follows standard order of operations (PEMDAS/BODMAS): Parentheses, Exponents, Multiplication and Division (left to right), Addition and Subtraction (left to right).

Example Calculations:

3 + 5 × 2 = 13

Multiplication before addition

(3 + 5) × 2 = 16

Parentheses change order

10 ÷ 2 + 3 = 8

Division before addition

10 ÷ (2 + 3) = 2

Parentheses first

Keyboard Support

  • Numbers 0-9
  • Operators: +, -, *, /
  • Decimal point: .
  • Parentheses: (, )
  • Enter or = for calculation
  • Backspace to delete
  • Escape to clear

Frequently Asked Questions

Does this calculator follow the order of operations?

Yes, the calculator follows standard order of operations (PEMDAS/BODMAS): Parentheses first, then multiplication and division (left to right), followed by addition and subtraction (left to right).

Can I use the keyboard to input calculations?

Yes, you can use your keyboard to enter numbers, operators, parentheses, and perform calculations. Press Enter or = to calculate, Backspace to delete, and Escape to clear.

What's the difference between AC and C buttons?

AC (All Clear) clears everything including the calculation history. C (Clear) only clears the current input while keeping the history.

How do I perform calculations with decimal numbers?

Use the decimal point button (.) to input decimal numbers. For example, enter "2.5 + 3.7" then press = to get the result 6.2.

Can I see my previous calculations?

Yes, the calculator displays up to 3 previous calculations above the current input field. These are cleared when you press AC (All Clear).