diff --git a/packages/lib/helpers.js b/packages/lib/helpers.js
index 17464ec5..c3fe23fb 100644
--- a/packages/lib/helpers.js
+++ b/packages/lib/helpers.js
@@ -90,6 +90,24 @@ function escapeRegExp(text) {
 	return text.replace(/[-[\]{}()*+?.,\\^$|#\s]/g, "\\$&");
 }
 
+/**
+ * Format byte count for human readable display
+ *
+ * Shortens a large number of bytes using the kB/MB/GB/TB prefixes.
+ * @param {number} bytes - Count of bytes to format.
+ * @returns {string} formatted text.
+ */
+function formatBytes(bytes) {
+	if (bytes === 0) {
+		return "0 Bytes";
+	}
+
+	let units = [" Bytes", " kB", " MB", " GB", " TB"];
+	let factor = 1000;
+	let power = Math.min(Math.floor(Math.log(bytes) / Math.log(factor)), units.length);
+	return (power > 0 ? (bytes / factor ** power).toFixed(2) : bytes) + units[power];
+}
+
 
 module.exports = {
 	basicType,
@@ -97,4 +115,5 @@ module.exports = {
 	timeout,
 	readStream,
 	escapeRegExp,
+	formatBytes,
 };
diff --git a/packages/web_ui/src/components/SavesList.jsx b/packages/web_ui/src/components/SavesList.jsx
index 133cffac..686c567c 100644
--- a/packages/web_ui/src/components/SavesList.jsx
+++ b/packages/web_ui/src/components/SavesList.jsx
@@ -6,7 +6,7 @@ import {
 import CaretLeftOutlined from "@ant-design/icons/CaretLeftOutlined";
 import LeftOutlined from "@ant-design/icons/LeftOutlined";
 
-import { libLink } from "@clusterio/lib";
+import { libLink, libHelpers } from "@clusterio/lib";
 
 import { useAccount } from "../model/account";
 import ControlContext from "./ControlContext";
@@ -179,17 +179,6 @@ function TransferModal(props) {
 	</>;
 }
 
-function formatBytes(bytes) {
-	if (bytes === 0) {
-		return "0 Bytes";
-	}
-
-	let units = [" Bytes", " kB", " MB", " GB", " TB"];
-	let factor = 1000;
-	let power = Math.min(Math.floor(Math.log(bytes) / Math.log(factor)), units.length);
-	return (power > 0 ? (bytes / factor ** power).toFixed(2) : bytes) + units[power];
-}
-
 export default function SavesList(props) {
 	let account = useAccount();
 	let control = useContext(ControlContext);
@@ -214,7 +203,7 @@ export default function SavesList(props) {
 				title: "Size",
 				key: "size",
 				responsive: ["sm"],
-				render: save => formatBytes(save.size),
+				render: save => libHelpers.formatBytes(save.size),
 				align: "right",
 				sorter: (a, b) => a.size - b.size,
 			},