[API reference](https://evolu.dev/docs/api-reference) › [@evolu/common](https://evolu.dev/docs/api-reference/common) › [local‑first/Owner](https://evolu.dev/docs/api-reference/common/local-first/Owner) › ownerIdBytesToOwnerId

```ts
function ownerIdBytesToOwnerId(
  ownerIdBytes: Uint8Array<ArrayBufferLike> &
    Brand<"Length16"> &
    Brand<"IdBytes"> &
    Brand<"OwnerIdBytes">,
): string & Brand<"Id"> & Brand<"OwnerId">;
```

Defined in: [packages/common/src/local-first/Owner.ts:102](https://github.com/evoluhq/evolu/blob/e7144e2bbe9069362b62dec1b64a8aa922b8f1b0/packages/common/src/local-first/Owner.ts#L102)

Converts [OwnerIdBytes](https://evolu.dev/docs/api-reference/common/local-first/Owner/variables/OwnerIdBytes) to [OwnerId](https://evolu.dev/docs/api-reference/common/local-first/Owner/variables/OwnerId).