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Enter two numbers and choose an operation to calculate.
The Four Basic Arithmetic Operations
Addition
Sum of two or more numbers.
Example: 5 + 3 = 8
Subtraction
Difference between two numbers.
Example: 10 − 4 = 6
Multiplication
Product of two numbers.
Example: 6 × 7 = 42
Division
Quotient of two numbers.
Example: 20 ÷ 4 = 5
Basic Calculator
This free Basic Calculator performs the four fundamental arithmetic operations — addition, subtraction, multiplication and division — with just one click. It is perfect for quick everyday calculations, homework, shopping, budgeting and simple math problems.
The calculator accepts both whole numbers and decimals. Enter two values, choose the operation you need, and the result appears instantly along with a clear summary of the calculation.
Supported Operations
- Addition (+) — Finds the total sum of two numbers.
- Subtraction (−) — Finds the difference between two numbers.
- Multiplication (×) — Finds the product of two numbers.
- Division (÷) — Finds the quotient of two numbers (division by zero is not allowed).
How to Use the Basic Calculator
- Enter the first number in the first field.
- Enter the second number in the second field.
- Click Add, Subtract, Multiply or Divide.
- View the result instantly with a full summary of the operation.
Who Is This Tool For?
- Students doing quick math homework.
- Shoppers calculating totals and change.
- Professionals doing basic arithmetic on the go.
- Anyone who needs a fast, reliable online calculator.
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View All CalculatorsFrequently Asked Questions
What is a basic calculator?
A basic calculator is a simple tool used to perform the four fundamental arithmetic operations: addition, subtraction, multiplication and division.
What are the four basic arithmetic operations?
The four basic arithmetic operations are addition (+), subtraction (−), multiplication (×) and division (÷).
Can I divide by zero in this calculator?
No. Division by zero is not defined in mathematics, so the calculator will show an error if you try to divide any number by zero.
Does the basic calculator support decimals?
Yes. You can enter whole numbers as well as decimal values such as 4.5, 12.75 or 0.25 in both input fields.
Is this Basic Calculator free to use?
Yes. This Basic Calculator is completely free, works online and does not require any registration.
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