diff --git a/app/components/general-layout.tsx b/app/components/general-layout.tsx
index 2afff41..25af46f 100644
--- a/app/components/general-layout.tsx
+++ b/app/components/general-layout.tsx
@@ -45,6 +45,7 @@ import {
   TooltipTrigger,
   TooltipProvider,
 } from "./ui/tooltip";
+import filesize from "./lib/filesize";
 
 export const GeneralLayout = ({ children }: React.PropsWithChildren) => {
   const location = useLocation();
@@ -223,7 +224,7 @@ const UploadFileForm = () => {
           />
         ))}
       </div>
-      
+
       {hasErrored ? (
         <div className="text-red-500">
           <p>An error occurred</p>
@@ -277,7 +278,6 @@ const UploadFileItem = ({
   failedState?: FailedUppyFile<Record<string, any>, Record<string, any>>;
   onRemove: (id: string) => void;
 }) => {
-  const sizeInMb = bytestoMegabytes(file.size).toFixed(2);
   return (
     <div className="flex flex-col w-full py-4 px-2 bg-primary-dark">
       <div
@@ -301,12 +301,12 @@ const UploadFileItem = ({
                   <span className="truncate text-ellipsis max-w-[20ch]">
                     {file.name}
                   </span>{" "}
-                  <span>({sizeInMb}MB)</span>
+                  <span>({filesize(file.size, 2)})</span>
                 </p>
               </TooltipTrigger>
               <TooltipContent>
                 <p>
-                  {file.name} ({sizeInMb}MB)
+                  {file.name} ({filesize(file.size, 2)})
                 </p>
               </TooltipContent>
             </Tooltip>
diff --git a/app/components/lib/filesize.ts b/app/components/lib/filesize.ts
new file mode 100644
index 0000000..2c46d91
--- /dev/null
+++ b/app/components/lib/filesize.ts
@@ -0,0 +1,46 @@
+// Copied from https://github.com/hustcc/filesize.js
+
+type SPEC = {
+  readonly radix: number;
+  readonly unit: string[];
+};
+
+const si = {
+  radix: 1e3,
+  unit: ["b", "kb", "Mb", "Gb", "Tb", "Pb", "Eb", "Zb", "Yb"],
+};
+const iec = {
+  radix: 1024,
+  unit: ["b", "Kib", "Mib", "Gib", "Tib", "Pib", "Eib", "Zib", "Yib"],
+};
+const jedec = {
+  radix: 1024,
+  unit: ["b", "Kb", "Mb", "Gb", "Tb", "Pb", "Eb", "Zb", "Yb"],
+};
+
+export const SPECS = {
+  si,
+  iec,
+  jedec,
+} as const;
+
+/**
+ * file size
+ * @param bytes Number of file size bytes
+ * @param fixed  Number of decimal, default is 1.
+ * @param spec  String of file size spec, default is jedec. Options: si, iec, jedec.
+ */
+export default function filesize(bytes: number, fixed = 1, spec: keyof typeof SPECS = "jedec"): string {
+  let _bytes = Math.abs(bytes);
+
+  const { radix, unit } = SPECS[spec];
+
+  let loop = 0;
+
+  // calculate
+  while (_bytes >= radix) {
+    _bytes /= radix;
+    ++loop;
+  }
+  return `${bytes.toFixed(fixed)} ${unit[loop]}`;
+}
diff --git a/app/routes/file-manager/columns.tsx b/app/routes/file-manager/columns.tsx
index 20b5920..a0a381f 100644
--- a/app/routes/file-manager/columns.tsx
+++ b/app/routes/file-manager/columns.tsx
@@ -13,6 +13,8 @@ import {
 import { cn } from "~/utils";
 import type { FileItem } from "~/data/file-provider";
 import { usePinning } from "~/hooks/usePinning";
+import filesize from "~/components/lib/filesize";
+
 
 // This type is used to define the shape of our data.
 // You can use a Zod schema here if you want.
@@ -64,6 +66,10 @@ export const columns: ColumnDef<FileItem>[] = [
   {
     accessorKey: "size",
     header: "Size",
+    cell: ({ row }) => {
+      const size = row.getValue("size");
+      return size ? filesize(size as number, 2) : "";
+    },
   },
   {
     accessorKey: "pinned",
diff --git a/package.json b/package.json
index d80d405..0604528 100644
--- a/package.json
+++ b/package.json
@@ -16,8 +16,8 @@
     "@conform-to/react": "^1.0.2",
     "@conform-to/zod": "^1.0.2",
     "@fontsource-variable/manrope": "^5.0.19",
-    "@radix-ui/react-accordion": "^1.1.2",
     "@lumeweb/portal-sdk": "0.0.0-20240327035051",
+    "@radix-ui/react-accordion": "^1.1.2",
     "@radix-ui/react-avatar": "^1.0.4",
     "@radix-ui/react-checkbox": "^1.0.4",
     "@radix-ui/react-dialog": "^1.0.5",