BODMAS Calculator: Order of Operations with Steps

How to use

1. Type the expression, e.g. 18 ÷ 3 × 2 + (8 − 3)^2. You can use * and / too.
2. Read the answer.
3. Follow the steps: each line does exactly one operation.

Good to know

BODMAS stands for Brackets, Orders (powers and roots), Division and Multiplication, Addition and Subtraction. Division and multiplication have the same rank and are done from left to right, as are addition and subtraction. So 18 ÷ 3 × 2 = 6 × 2 = 12, not 18 ÷ 6 = 3. PEMDAS (used in the US) is the same rule with different words.

Each step here works out one operation: the innermost brackets first, then powers and roots, then × and ÷ from the left, then + and − from the left. Negative results inside a step keep their brackets, e.g. 3 × (−3). Supported: + − × ÷ ^, brackets, √, ∛, %, ! and functions like sin, log and ln (angles in degrees by default; change under More options).

Some Indian textbooks put 'of' (as in 1/2 of 10) before division. This calculator has no 'of' key: type it as × and add brackets if it must go first, e.g. 20 ÷ (1/2 × 8). Viral puzzles like 8 ÷ 2(2 + 2) are ambiguous because people read implied multiplication differently; this calculator treats it like ×, giving 16.

Questions

Last updated: 27 October 2026