index.md

---

title: Load
slug: WebAssembly/Reference/Memory/Load

---

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The load instructions, are used to load a number from memory onto the stack.

For the integer numbers, you can also load a narrower number from memory and extend it into a wider type, e.g. load an unsigned 8-bit number and convert it into an i32 (i32.load8_u). These instructions are separate for signed and unsigned numbers.

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Syntax

;; the offset from where to load the number
i32.const 0

;; load the number at position 0
i32.load

Instruction	Binary opcode
i32.load	0x28
i64.load	0x29
f32.load	0x2a
f64.load	0x2b
i32.load8_s	0x2c
i32.load8_u	0x2d
i32.load16_s	0x2e
i32.load16_u	0x2f
i64.load8_s	0x30
i64.load8_u	0x31
i64.load16_s	0x32
i64.load16_u	0x33
i64.load32_s	0x34
i64.load32_u	0x35