diff --git a/frontend/package.json b/frontend/package.json
index 03c451f..ade5123 100644
--- a/frontend/package.json
+++ b/frontend/package.json
@@ -35,6 +35,7 @@
     "react-dnd": "^11.1.3",
     "react-dnd-html5-backend": "^11.1.3",
     "react-dom": "^18.2.0",
+    "react-intl": "^6.4.7",
     "react-is": "^18.2.0",
     "react-router-dom": "^6.4.5",
     "react-virtuoso": "^4.6.1",
diff --git a/frontend/src/pages/backup.tsx b/frontend/src/pages/backup.tsx
index 14e08f4..3d4447d 100644
--- a/frontend/src/pages/backup.tsx
+++ b/frontend/src/pages/backup.tsx
@@ -9,6 +9,7 @@ import { cli, convertSourceFiles } from "../api";
 import { Root } from "../api";
 import { AddFileAction, RefreshListAction, CreateBackupJobAction } from "../actions";
 import { JobArchiveParam, JobCreateRequest, Source } from "../entity";
+import { chonkyI18n } from "../tools";
 
 const useBackupSourceBrowser = (source: RefObject<FileBrowserHandle>) => {
   const [files, setFiles] = useState<FileArray>(Array(1).fill(null));
@@ -64,6 +65,7 @@ const useBackupSourceBrowser = (source: RefObject<FileBrowserHandle>) => {
     fileActions,
     defaultFileViewActionId: ChonkyActions.EnableListView.id,
     doubleClickDelay: 300,
+    i18n: chonkyI18n,
   };
 };
 
@@ -139,6 +141,7 @@ const useBackupTargetBrowser = () => {
     fileActions,
     defaultFileViewActionId: ChonkyActions.EnableListView.id,
     doubleClickDelay: 300,
+    i18n: chonkyI18n,
   };
 };
 
diff --git a/frontend/src/pages/file.tsx b/frontend/src/pages/file.tsx
index a7c1cf1..a422712 100644
--- a/frontend/src/pages/file.tsx
+++ b/frontend/src/pages/file.tsx
@@ -12,6 +12,7 @@ import { ToobarInfo } from "../components/toolbarInfo";
 
 import { useDetailModal, DetailModal } from "./file-detail";
 import { FileGetReply } from "../entity";
+import { chonkyI18n } from "../tools";
 
 const useDualSide = () => {
   const left = useRef<FileBrowserHandle>(null);
@@ -165,6 +166,7 @@ const useFileBrowser = (storageKey: string, refreshAll: () => Promise<void>, ope
     defaultFileViewActionId: ChonkyActions.EnableListView.id,
     doubleClickDelay: 300,
     totalSize,
+    i18n: chonkyI18n,
   };
 };
 
diff --git a/frontend/src/pages/restore.tsx b/frontend/src/pages/restore.tsx
index e4b6e69..d59184a 100644
--- a/frontend/src/pages/restore.tsx
+++ b/frontend/src/pages/restore.tsx
@@ -2,15 +2,15 @@ import { useState, useEffect, useMemo, useCallback, FC, useRef, RefObject } from
 
 import Grid from "@mui/material/Grid";
 import Box from "@mui/material/Box";
-import { FileBrowser, FileNavbar, FileToolbar, FileList, FileContextMenu, FileArray, FileBrowserHandle } from "@samuelncui/chonky";
+import { FileBrowser, FileNavbar, FileToolbar, FileList, FileContextMenu, FileArray, FileBrowserHandle, defaultFormatters } from "@samuelncui/chonky";
 import { ChonkyActions, ChonkyFileActionData, FileData } from "@samuelncui/chonky";
 
 import { ToobarInfo } from "../components/toolbarInfo";
 
-import { cli, convertFiles } from "../api";
-import { Root } from "../api";
+import { Root, cli, convertFiles } from "../api";
 import { AddFileAction, RefreshListAction, CreateRestoreJobAction } from "../actions";
 import { JobCreateRequest, JobRestoreParam, Source } from "../entity";
+import { chonkyI18n } from "../tools";
 
 const useRestoreSourceBrowser = (target: RefObject<FileBrowserHandle>) => {
   const [files, setFiles] = useState<FileArray>(Array(1).fill(null));
@@ -82,6 +82,7 @@ const useRestoreSourceBrowser = (target: RefObject<FileBrowserHandle>) => {
     fileActions,
     defaultFileViewActionId: ChonkyActions.EnableListView.id,
     doubleClickDelay: 300,
+    i18n: chonkyI18n,
   };
 };
 
@@ -132,6 +133,7 @@ const useRestoreTargetBrowser = () => {
     fileActions,
     defaultFileViewActionId: ChonkyActions.EnableListView.id,
     doubleClickDelay: 300,
+    i18n: chonkyI18n,
   };
 };
 
diff --git a/frontend/src/tools.ts b/frontend/src/tools.ts
index 0e5e476..ff1289c 100644
--- a/frontend/src/tools.ts
+++ b/frontend/src/tools.ts
@@ -1,4 +1,8 @@
+import { IntlShape } from "react-intl";
+import { Nullable } from "tsdef";
+
 import { filesize } from "filesize";
+import { I18nConfig, FileData, defaultFormatters } from "@samuelncui/chonky";
 
 export const hexEncode = (buf: string) => {
   var str = "";
@@ -8,11 +12,7 @@ export const hexEncode = (buf: string) => {
   return str;
 };
 
-export const formatFilesize = (size: number | bigint): string =>
-  filesize(size as any as number, {
-    base: 2,
-    standard: "jedec",
-  }) as string;
+export const formatFilesize = (size: number | bigint): string => filesize(size as any as number, { standard: "iec" }) as string;
 
 export const download = (buf: Uint8Array, filename: string, contentType: string) => {
   const blob = new Blob([buf], { type: contentType });
@@ -27,3 +27,13 @@ export const sleep = (ms: number): Promise<null> =>
   new Promise((resolve) => {
     setTimeout(resolve, ms);
   });
+
+export const chonkyI18n: I18nConfig = {
+  formatters: {
+    ...defaultFormatters,
+    formatFileSize: (_intl: IntlShape, file: Nullable<FileData>): Nullable<string> => {
+      if (!file || typeof file.size !== "number") return null;
+      return filesize(file.size, { standard: "iec" }) as string;
+    },
+  },
+};