diff --git a/src/dateTime/__tests__/format.ts b/src/dateTime/__tests__/format.ts
index a7fd91e..871c6b3 100644
--- a/src/dateTime/__tests__/format.ts
+++ b/src/dateTime/__tests__/format.ts
@@ -1,6 +1,7 @@
-import {HTML5_INPUT_FORMATS} from '../../constants';
+import {HTML5_INPUT_FORMATS, englishFormats} from '../../constants';
 import {settings} from '../../settings';
 import {dateTime, dateTimeUtc} from '../dateTime';
+import {expandFormat} from '../format';
 
 afterEach(() => {
     settings.updateLocale({weekStart: 1, yearStart: 1});
@@ -342,3 +343,27 @@ test('Y token', () => {
     expect(dateTime({input: [9999]}).format('Y')).toBe('9999'); // 'format 9999 with Y'
     expect(dateTime({input: [10000]}).format('Y')).toBe('+10000'); // 'format 10000 with Y'
 });
+
+test('expand format', () => {
+    expect(expandFormat('[L]', englishFormats)).toBe('[L]');
+    expect(expandFormat('L', englishFormats)).toBe(englishFormats.L);
+    expect(expandFormat('LL', englishFormats)).toBe(englishFormats.LL);
+    expect(expandFormat('LLL', englishFormats)).toBe(englishFormats.LLL);
+    expect(expandFormat('LLLL', englishFormats)).toBe(englishFormats.LLLL);
+    expect(expandFormat('LT', englishFormats)).toBe(englishFormats.LT);
+    expect(expandFormat('LTS', englishFormats)).toBe(englishFormats.LTS);
+    expect(expandFormat('[L]L', englishFormats)).toBe(`[L]${englishFormats.L}`);
+    expect(expandFormat('[L]T', englishFormats)).toBe(`[L]T`);
+    expect(expandFormat('l', englishFormats)).toBe('M/D/YYYY');
+    expect(expandFormat('ll', englishFormats)).toBe('MMM D, YYYY');
+    expect(expandFormat('lll', englishFormats)).toBe('MMM D, YYYY h:mm A');
+    expect(expandFormat('llll', englishFormats)).toBe('ddd, MMM D, YYYY h:mm A');
+    expect(expandFormat('l', {...englishFormats, l: 'short format'})).toBe('short format');
+    expect(expandFormat('ll', {...englishFormats, ll: 'short format'})).toBe('short format');
+    expect(expandFormat('lll', {...englishFormats, lll: 'short format'})).toBe('short format');
+    expect(expandFormat('llll', {...englishFormats, llll: 'short format'})).toBe('short format');
+    expect(expandFormat('llll', {...englishFormats, l: 'L', ll: 'l', lll: 'll', llll: 'lll'})).toBe(
+        englishFormats.L,
+    );
+    expect(expandFormat('l', {...englishFormats, l: 'l'})).toBe('l');
+});
diff --git a/src/dateTime/format.ts b/src/dateTime/format.ts
index ce51a60..a31002c 100644
--- a/src/dateTime/format.ts
+++ b/src/dateTime/format.ts
@@ -4,37 +4,44 @@ import type {Locale, LongDateFormat} from '../settings/types';
 import {parseZoneInfo} from '../timeZone';
 import type {DateTime} from '../typings';
 
-function getShortLocalizedFormatFromLongLocalizedFormat(formatBis: string) {
-    return formatBis.replace(
+function getShortLocalizedFormatFromLongLocalizedFormat(format: string) {
+    return format.replace(
         /(\[[^\]]+])|(MMMM|MM|DD|dddd)/g,
         (_: string, escapeSequence: string, localizedFormat: string) =>
             escapeSequence || localizedFormat.slice(1),
     );
 }
 
+const localizedFormattingTokens = /(\[[^\]]*])|(LTS?|l{1,4}|L{1,4})/g;
 export function expandFormat(
     format: string,
     formats: LongDateFormat = settings.getLocaleData().formats ?? englishFormats,
 ) {
-    return format.replace(
-        /(\[[^\]]*])|(LTS?|l{1,4}|L{1,4})/g,
-        (_: string, escapeSequence: string, localizedFormat: keyof LongDateFormat) => {
-            if (localizedFormat) {
-                if (localizedFormat in englishFormats) {
+    let result = format;
+    for (let i = 0; i < 5; i++) {
+        const expandedFormat = result.replace(
+            localizedFormattingTokens,
+            (_: string, escapeSequence: string, localizedFormat: keyof LongDateFormat) => {
+                if (localizedFormat) {
+                    const LongLocalizedFormat =
+                        localizedFormat.toUpperCase() as keyof typeof englishFormats;
                     return (
                         formats[localizedFormat] ||
-                        englishFormats[localizedFormat as keyof typeof englishFormats]
+                        englishFormats[localizedFormat as keyof typeof englishFormats] ||
+                        getShortLocalizedFormatFromLongLocalizedFormat(
+                            formats[LongLocalizedFormat] || englishFormats[LongLocalizedFormat],
+                        )
                     );
                 }
-                const LongLocalizedFormat =
-                    localizedFormat.toUpperCase() as keyof typeof englishFormats;
-                return getShortLocalizedFormatFromLongLocalizedFormat(
-                    formats[LongLocalizedFormat] || englishFormats[LongLocalizedFormat],
-                );
-            }
-            return escapeSequence;
-        },
-    );
+                return escapeSequence;
+            },
+        );
+        if (expandedFormat === result) {
+            break;
+        }
+        result = expandedFormat;
+    }
+    return result;
 }
 
 export const FORMAT_DEFAULT = 'YYYY-MM-DDTHH:mm:ssZ';