Number Calculator
Perform basic arithmetic with this free online Number Calculator. Work with addition, subtraction, multiplication, and division to solve everyday math problems and check calculations. Enter your expression to get a quick result without installing additional software.
Supports + − × ÷, ^ for powers, brackets and decimals. A % after a number divides it by 100, so 50% is 0.5. Between two numbers, % gives the remainder, so 10 % 3 is 1.
What is Number Calculator?
Solve basic arithmetic expressions with the free Number Calculator. Perform addition, subtraction, multiplication and division to check calculations and work through everyday math problems. Enter a supported numerical expression to calculate the result without installing additional software. Review the expression and order of operations when working with complex calculations.
Why use this tool?
- Type the whole calculation in one line and get the result at once.
- It follows the standard order of operations, so 2 + 3 * 4 gives 14.
- Supports brackets, decimals, powers with ^, percentages and the remainder operator.
- Error messages say what is wrong, such as a missing bracket or a division by zero.
How to use Number Calculator
- Step 1. Type an expression, for example 25 * 4 + 10.
- Step 2. Read the result shown below the box.
- Step 3. If you see an error message, check the brackets and operators and edit the expression.
Common use cases
Important notes
- Order of operations: brackets, then powers, then multiplication and division, then addition and subtraction.
- A % after a number divides it by 100, so 50% is 0.5 and 200 * 15% is 30. Between two numbers, % gives the remainder, so 10 % 3 is 1.
- Use ^ for powers: 2 ^ 10 is 1,024. Powers are evaluated from right to left.
- Results are rounded to 12 significant digits to remove floating-point noise, so 0.1 + 0.2 shows 0.3.
- Only numbers and the operators above are supported. Functions such as sqrt are not.
More Calculators Tools
Number Calculator FAQ
How do I calculate a percentage?
Multiply by the percentage written with a % sign. For example, 200 * 15% gives 30.
Does it follow the order of operations?
Yes. Brackets come first, then powers, then multiplication and division, then addition and subtraction.
How do I calculate powers?
Use the ^ symbol. For example, 2 ^ 10 gives 1,024.
Why does 0.1 + 0.2 show 0.3?
Computers store decimals in binary, which can add tiny errors. The tool rounds results to 12 significant digits so you see the expected value.
Can I use x or ÷ instead of * and /?
Yes. The letter x and the symbols × and ÷ are accepted.