diff --git a/src/webgpu/util/math.ts b/src/webgpu/util/math.ts
index 380832e1b857..018d350a984d 100644
--- a/src/webgpu/util/math.ts
+++ b/src/webgpu/util/math.ts
@@ -3,6 +3,7 @@ import { assert } from '../../common/util/util.js';
 import {
   Float16Array,
   getFloat16,
+  hfround,
   setFloat16,
 } from '../../external/petamoriken/float16/float16.js';
 
@@ -2021,13 +2022,9 @@ export function quantizeToF32(num: number): number {
   return quantizeToF32Data[0];
 }
 
-/** Statically allocate working data, so it doesn't need per-call creation */
-const quantizeToF16Data = new Float16Array(new ArrayBuffer(2));
-
 /** @returns the closest 16-bit floating point value to the input */
 export function quantizeToF16(num: number): number {
-  quantizeToF16Data[0] = num;
-  return quantizeToF16Data[0];
+  return hfround(num);
 }
 
 /** Statically allocate working data, so it doesn't need per-call creation */