diff --git a/src/components/DirectoryItems.jsx b/src/components/DirectoryItems.jsx
index d93ac556..57604e3c 100644
--- a/src/components/DirectoryItems.jsx
+++ b/src/components/DirectoryItems.jsx
@@ -1,7 +1,7 @@
 import React from "react";
 import { Link } from "react-router-dom";
 import KopiaTable from "./KopiaTable";
-import { objectLink, rfc3339TimestampForDisplay } from "../utils/formatutils";
+import { objectLink, LocaleFormatUtils } from "../utils/formatutils";
 import { sizeWithFailures } from "../utils/uiutil";
 import { UIPreferencesContext } from "../contexts/UIPreferencesContext";
 import PropTypes from "prop-types";
@@ -41,10 +41,12 @@ function directoryLinkOrDownload(x, state) {
 export function DirectoryItems({ historyState, items }) {
   const context = React.useContext(UIPreferencesContext);
 
-  const { bytesStringBase2 } = context;
+  const { bytesStringBase2, locale } = context;
+  const fmt = new LocaleFormatUtils(locale);
   const columns = [
     {
       id: "name",
+      accessorFn: (x) => objectName(x.name, x.type),
       header: "Name",
       width: "",
       cell: (x) => directoryLinkOrDownload(x.row.original, historyState),
@@ -54,26 +56,30 @@ export function DirectoryItems({ historyState, items }) {
       accessorFn: (x) => x.mtime,
       header: "Last Modification",
       width: 200,
-      cell: (x) => rfc3339TimestampForDisplay(x.cell.getValue()),
+      cell: (x) => fmt.timestamp(x.cell.getValue()),
     },
     {
       id: "size",
       accessorFn: (x) => sizeInfo(x),
       header: "Size",
       width: 100,
-      cell: (x) => sizeWithFailures(x.cell.getValue(), x.row.original.summ, bytesStringBase2),
+      cell: (x) => (
+        <div className="align-right">{sizeWithFailures(x.cell.getValue(), x.row.original.summ, bytesStringBase2)}</div>
+      ),
     },
     {
       id: "files",
       accessorFn: (x) => (x.summ ? x.summ.files : undefined),
       header: "Files",
       width: 100,
+      cell: (x) => <div className="align-right">{fmt.number(x.getValue())}</div>,
     },
     {
       id: "dirs",
       accessorFn: (x) => (x.summ ? x.summ.dirs : undefined),
       header: "Directories",
       width: 100,
+      cell: (x) => <div className="align-right">{fmt.number(x.getValue())}</div>,
     },
   ];
 
diff --git a/src/contexts/UIPreferencesContext.tsx b/src/contexts/UIPreferencesContext.tsx
index 985f80c9..d8ff52f9 100644
--- a/src/contexts/UIPreferencesContext.tsx
+++ b/src/contexts/UIPreferencesContext.tsx
@@ -11,6 +11,7 @@ const DEFAULT_PREFERENCES = {
   theme: getDefaultTheme(),
   preferWebDav: false,
   fontSize: "fs-6",
+  locale: "en-US",
 } as SerializedUIPreferences;
 const PREFERENCES_URL = "/api/v1/ui-preferences";
 
@@ -24,11 +25,13 @@ export interface UIPreferences {
   get bytesStringBase2(): boolean;
   get defaultSnapshotViewAll(): boolean;
   get fontSize(): FontSize;
+  get locale(): string;
   setTheme: (theme: Theme) => void;
   setPageSize: (pageSize: number) => void;
   setByteStringBase: (bytesStringBase2: string) => void;
   setDefaultSnapshotViewAll: (defaultSnapshotViewAll: boolean) => void;
   setFontSize: (size: string) => void;
+  setLocale: (locale: string) => void;
 }
 
 interface SerializedUIPreferences {
@@ -37,6 +40,7 @@ interface SerializedUIPreferences {
   defaultSnapshotViewAll?: boolean;
   theme: Theme;
   fontSize: FontSize;
+  locale: string;
 }
 
 export interface UIPreferenceProviderProps {
@@ -108,6 +112,11 @@ export function UIPreferenceProvider(props: UIPreferenceProviderProps) {
     [],
   );
 
+  const setLocale = (input: string) =>
+    setPreferences((oldPreferences) => {
+      return { ...oldPreferences, locale: input };
+    });
+
   useEffect(() => {
     axios
       .get(PREFERENCES_URL)
@@ -124,6 +133,9 @@ export function UIPreferenceProvider(props: UIPreferenceProviderProps) {
         } else {
           storedPreferences.pageSize = normalizePageSize(storedPreferences.pageSize);
         }
+        if (!storedPreferences.locale || (storedPreferences.locale as string) === "") {
+          storedPreferences.locale = DEFAULT_PREFERENCES.locale;
+        }
         setTheme(storedPreferences.theme);
         setFontSize(storedPreferences.fontSize);
         setPreferences(storedPreferences);
@@ -164,6 +176,7 @@ export function UIPreferenceProvider(props: UIPreferenceProviderProps) {
     setByteStringBase,
     setDefaultSnapshotViewAll,
     setFontSize,
+    setLocale,
   } as UIPreferences;
 
   return <UIPreferencesContext.Provider value={providedValue}>{props.children}</UIPreferencesContext.Provider>;
diff --git a/src/css/App.css b/src/css/App.css
index f7640eaa..fd3ea033 100644
--- a/src/css/App.css
+++ b/src/css/App.css
@@ -97,6 +97,10 @@ body {
   background-color: var(--background-color);
 }
 
+#kopia .table .align-right {
+  text-align: right;
+}
+
 #kopia nav.navbar {
   padding-left: 10px;
   padding-right: 10px;
diff --git a/src/pages/Preferences.jsx b/src/pages/Preferences.jsx
index 2fe976ab..5e08081f 100644
--- a/src/pages/Preferences.jsx
+++ b/src/pages/Preferences.jsx
@@ -12,7 +12,7 @@ import { UIPreferencesContext } from "../contexts/UIPreferencesContext";
  * Class that exports preferences
  */
 export function Preferences() {
-  const { theme, bytesStringBase2, fontSize, setByteStringBase, setTheme, setFontSize } =
+  const { theme, bytesStringBase2, fontSize, locale, setByteStringBase, setTheme, setFontSize, setLocale } =
     useContext(UIPreferencesContext);
 
   return (
@@ -62,6 +62,17 @@ export function Preferences() {
                 <option value="false">Base-10 (KB, MB, GB, TB)</option>
               </select>
             </Form.Group>
+            <Form.Group as={Col} controlId="locale">
+              <Form.Label className="required">Locale</Form.Label>
+              <input
+                className="form-control form-control-sm"
+                title="Enter a Locale code e.g. 'en_US'"
+                placeholder="Locale code e.g. en_US"
+                id="localeInput"
+                value={locale}
+                onChange={(e) => setLocale(e.target.value)}
+              />
+            </Form.Group>
           </Row>
         </Container>
       </Tab>
diff --git a/src/pages/SnapshotHistory.jsx b/src/pages/SnapshotHistory.jsx
index 4dd8853b..9f353e31 100644
--- a/src/pages/SnapshotHistory.jsx
+++ b/src/pages/SnapshotHistory.jsx
@@ -1,5 +1,5 @@
 import axios from "axios";
-import React, { Component, useContext } from "react";
+import React, { Component } from "react";
 import Badge from "react-bootstrap/Badge";
 import Form from "react-bootstrap/Form";
 import Row from "react-bootstrap/Row";
@@ -9,7 +9,7 @@ import Spinner from "react-bootstrap/Spinner";
 import { Link, useNavigate, useLocation } from "react-router-dom";
 import KopiaTable from "../components/KopiaTable";
 import { CLIEquivalent } from "../components/CLIEquivalent";
-import { compare, objectLink, parseQuery, rfc3339TimestampForDisplay } from "../utils/formatutils";
+import { compare, objectLink, parseQuery, LocaleFormatUtils } from "../utils/formatutils";
 import { errorAlert, redirect, sizeWithFailures } from "../utils/uiutil";
 import { sourceQueryStringParams } from "../utils/policyutil";
 import { GoBackButton } from "../components/GoBackButton";
@@ -350,7 +350,8 @@ class SnapshotHistoryInternal extends Component {
 
   render() {
     let { snapshots, unfilteredCount, uniqueCount, isLoading, error } = this.state;
-    const { bytesStringBase2 } = this.context;
+    const { bytesStringBase2, locale } = this.context;
+    const fmt = new LocaleFormatUtils(locale);
     if (error) {
       return <p>{error.message}</p>;
     }
@@ -385,10 +386,9 @@ class SnapshotHistoryInternal extends Component {
         header: "Start time",
         width: 200,
         cell: (x) => {
-          let timestamp = rfc3339TimestampForDisplay(x.row.original.startTime);
           return (
             <Link to={objectLink(x.row.original.rootID)} state={{ label: path }}>
-              {timestamp}
+              {fmt.timestamp(x.row.original.startTime)}
             </Link>
           );
         },
@@ -441,17 +441,23 @@ class SnapshotHistoryInternal extends Component {
         header: "Size",
         accessorFn: (x) => x.summary.size,
         width: 100,
-        cell: (x) => sizeWithFailures(x.cell.getValue(), x.row.original.summary, bytesStringBase2),
+        cell: (x) => (
+          <div className="align-right">
+            {sizeWithFailures(x.cell.getValue(), x.row.original.summary, bytesStringBase2)}
+          </div>
+        ),
       },
       {
         header: "Files",
         accessorFn: (x) => x.summary.files,
         width: 100,
+        cell: (x) => <div className="align-right">{fmt.number(x.cell.getValue())}</div>,
       },
       {
         header: "Dirs",
         accessorFn: (x) => x.summary.dirs,
         width: 100,
+        cell: (x) => <div className="align-right">{fmt.number(x.cell.getValue())}</div>,
       },
     ];
 
@@ -664,6 +670,7 @@ class SnapshotHistoryInternal extends Component {
     );
   }
 }
+SnapshotHistoryInternal.contextType = UIPreferencesContext;
 
 SnapshotHistoryInternal.propTypes = {
   host: PropTypes.string,
@@ -676,7 +683,6 @@ SnapshotHistoryInternal.propTypes = {
 export function SnapshotHistory(props) {
   const navigate = useNavigate();
   const location = useLocation();
-  useContext(UIPreferencesContext);
 
   return <SnapshotHistoryInternal navigate={navigate} location={location} {...props} />;
 }
diff --git a/src/pages/Snapshots.jsx b/src/pages/Snapshots.jsx
index cc993623..0aadad68 100644
--- a/src/pages/Snapshots.jsx
+++ b/src/pages/Snapshots.jsx
@@ -340,14 +340,17 @@ export class Snapshots extends Component {
         header: "Size",
         width: 120,
         accessorFn: (x) => (x.lastSnapshot ? x.lastSnapshot.stats.totalSize : 0),
-        cell: (x) =>
-          sizeWithFailures(
-            x.cell.getValue(),
-            x.row.original.lastSnapshot && x.row.original.lastSnapshot.rootEntry
-              ? x.row.original.lastSnapshot.rootEntry.summ
-              : null,
-            bytesStringBase2,
-          ),
+        cell: (x) => (
+          <div className="align-right">
+            {sizeWithFailures(
+              x.cell.getValue(),
+              x.row.original.lastSnapshot && x.row.original.lastSnapshot.rootEntry
+                ? x.row.original.lastSnapshot.rootEntry.summ
+                : null,
+              bytesStringBase2,
+            )}
+          </div>
+        ),
       },
       {
         id: "lastSnapshotTime",
diff --git a/src/utils/formatutils.js b/src/utils/formatutils.js
index cb65de00..81b243d9 100644
--- a/src/utils/formatutils.js
+++ b/src/utils/formatutils.js
@@ -224,3 +224,29 @@ export function formatDuration(from, to, useMultipleUnits = false) {
 
   return formatMilliseconds(ms, useMultipleUnits);
 }
+
+export class LocaleFormatUtils {
+  constructor(locale) {
+    if (!locale || locale === "") {
+      this.locale = undefined;
+    } else {
+      this.locale = locale;
+    }
+  }
+
+  number(f) {
+    if (isNaN(parseFloat(f))) {
+      return "";
+    }
+    return f.toLocaleString(this.locale);
+  }
+
+  timestamp(ts) {
+    if (!ts) {
+      return "";
+    }
+
+    let dt = new Date(ts);
+    return dt.toLocaleString(this.locale);
+  }
+}