diff --git a/benchmark/utils.js b/benchmark/utils.js
new file mode 100644
index 0000000..773cbba
--- /dev/null
+++ b/benchmark/utils.js
@@ -0,0 +1,9 @@
+import { hexToBytes } from '../abstract/utils.js';
+import { run, mark } from 'micro-bmark';
+
+run(async () => {
+  const hex32 = '0123456789abcdef'.repeat(4);
+  const hex256 = hex32.repeat(8);
+  await mark('hexToBytes 32b', 5000000, () => hexToBytes(hex32));
+  await mark('hexToBytes 256b', 500000, () => hexToBytes(hex256));
+});