A math calculator handles arithmetic operations from basic addition and subtraction to more complex expressions.
About this calculator
A math calculator handles arithmetic operations from basic addition and subtraction to more complex expressions. It evaluates the order of operations automatically and supports parentheses for grouping.
Use it for quick calculations when you need a reliable result without a physical calculator. The tool works on desktop and mobile, and results appear instantly.
Common uses
- Evaluate multi-step arithmetic expressions quickly
- Check calculations involving fractions or decimals
- Compute percentage changes and proportions
- Verify manual calculations for homework or work
- Use as a quick mental-math substitute on mobile
Frequently asked questions
What is the order of operations in math?
The standard order is: Parentheses first, then Exponents, then Multiplication and Division (left to right), then Addition and Subtraction (left to right). This is often remembered as PEMDAS or BODMAS. So 2 + 3 × 4 = 14, not 20, because multiplication comes before addition.
How do I calculate a percentage of a number?
To find X% of Y: multiply Y by X and divide by 100. Example: 15% of 200 = (200 × 15) / 100 = 30. Alternatively, convert the percentage to a decimal (15% = 0.15) and multiply: 200 × 0.15 = 30.