Supports BODMAS / PEMDAS order: brackets, exponents (^), division, multiplication, addition, subtraction.
Free BODMAS Calculator (Order of Operations)
This BODMAS calculator helps you evaluate math expressions correctly by following the standard order of operations. Instead of solving from left to right randomly, the tool applies a clear rule set so you get a consistent, accurate answer. It is useful for students, teachers, competitive exam prep, and quick everyday calculations.
What Does BODMAS Mean?
BODMAS is a memory aid used to decide which part of a calculation should be solved first:
- B – Brackets
- O – Orders (powers, roots, exponents)
- D – Division
- M – Multiplication
- A – Addition
- S – Subtraction
In some countries you may see PEMDAS or BIDMAS. They represent the same idea: solve grouped terms first, then exponents, then multiplication and division from left to right, and finally addition and subtraction from left to right.
How to Use This Calculator
Step-by-step
- Type your full expression in the input box.
- Use normal operators:
+,-,*,/, and^. - Use parentheses for brackets, for example
(12-4)*3. - Click Calculate or press Enter.
- Use Clear to reset.
Worked Examples
Example 1: 6 + 3 * 4
Multiplication comes before addition, so compute 3*4=12, then 6+12=18.
Example 2: (10 - 2) / 4
Brackets first: 10-2=8. Then divide: 8/4=2.
Example 3: 2^3 + 5 * 2
Exponent first: 2^3=8. Multiplication next: 5*2=10. Final total: 8+10=18.
Common Mistakes to Avoid
- Going strictly left to right: this gives wrong answers when precedence matters.
- Ignoring brackets: bracketed values should always be solved first.
- Forgetting left-to-right tie rules: division and multiplication share priority.
- Missing operator symbols: type
*explicitly, or use clear bracket notation like(2+5)(3+1). - Typing invalid characters: only numbers, decimal points, operators, and parentheses are accepted.
BODMAS vs PEMDAS vs BIDMAS
Different education systems use different acronyms, but the underlying rule is the same order of operations. So whether you search for an order of operations calculator, PEMDAS calculator, or BODMAS calculator, the computation method is equivalent.
When This Tool Is Most Useful
- Checking homework answers quickly
- Testing your own step-by-step solution
- Verifying mental math before exams
- Solving mixed operator expressions with confidence
FAQ
Does this calculator support decimals?
Yes. You can enter values like 3.5*(2.2+1).
Does it support negative numbers?
Yes. Expressions such as -4+7 and 5*(-2) are supported.
Can I use powers?
Yes. Use the caret symbol ^ for exponents, for example 3^4.
Why do I get an error?
Usually this happens because of unmatched parentheses, two operators in a row, or division by zero. Check the expression and try again.