index.md

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title: Demote
slug: WebAssembly/Reference/Numeric/Demote

---

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The demote instruction, is used to convert (demote) numbers of type f64 to type f32.

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Syntax

;; push an f64 onto the stack
f64.const 10.5

;; demote from f64 to f32
f32.demote_f64

;; the top item on the stack will now be the value 10.5 of type f32

Instruction	Binary opcode
f32.demote_f64	0xb6