index.md

---

title: Multiplication
slug: WebAssembly/Reference/Numeric/Multiplication

---

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The mul instructions, short for multiplication, are used for multiplying one number by another number, similar to the * operator in other languages.

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Syntax

;; load two numbers onto the stack
i32.const 10
i32.const 3

;; multiply one number by the other
i32.mul

;; the top item on the stack will now be 30 (10 * 3 = 30)

Instruction	Binary opcode
i32.mul	0x6c
i64.mul	0x7e
f32.mul	0x94
f64.mul	0xa2