BIDMAS Calculator
Instantly solve mathematical expressions step-by-step using the correct order of operations. Free, accurate tool for students and professionals.
Evaluate Your Expressions
Enter your mathematical expression below. The calculator will evaluate it strictly following the BIDMAS (Brackets, Indices, Division, Multiplication, Addition, Subtraction) rules.
Expression Input
Enter your math problem to see the step-by-step breakdown
Solution Breakdown
Order of operations applied
The BIDMAS Rule Explained
The order of operations is a set of rules that dictates the sequence in which mathematical operations should be performed to ensure a single, correct result.
| Letter | Operation | Symbol(s) | Priority |
|---|---|---|---|
| B | Brackets | ( ) | 1st (Highest) |
| I | Indices (Powers/Roots) | ², ³, √ | 2nd |
| D / M | Division & Multiplication | ÷, /, ×, * | 3rd (Left to Right) |
| A / S | Addition & Subtraction | +, – | 4th (Left to Right) |
BIDMAS FAQ
Everything you need to know about the order of operations and how to apply it correctly.
BIDMAS is an acronym used to remember the order of operations in mathematics. It stands for Brackets, Indices, Division and Multiplication, Addition and Subtraction.
Both are correct and mean the same thing. BIDMAS uses ‘Indices’ while BODMAS uses ‘Orders’ (referring to powers and square roots). They both dictate the exact same order of operations.
Yes. Multiplication and Division share the same level of priority. When both appear in an expression, you evaluate them from left to right, whichever comes first.
Negative numbers are treated as part of the value they are attached to. For example, in the expression 5 + (-3 * 2), you first calculate the multiplication inside the implicit grouping (-3 * 2 = -6), and then add it to 5, resulting in -1.