diff --git a/src/vs/platform/quickinput/browser/quickInput.ts b/src/vs/platform/quickinput/browser/quickInput.ts
index 6d7096e85ea10..31f3bb972c85c 100644
--- a/src/vs/platform/quickinput/browser/quickInput.ts
+++ b/src/vs/platform/quickinput/browser/quickInput.ts
@@ -49,6 +49,8 @@ export interface IQuickInputOptions {
 	idPrefix: string;
 	container: HTMLElement;
 	ignoreFocusOut(): boolean;
+	maximumWidth(): number;
+	relativeWidth(): number;
 	backKeybindingLabel(): string | undefined;
 	setContextKey(id?: string): void;
 	linkOpenerDelegate(content: string): void;
diff --git a/src/vs/platform/quickinput/browser/quickInputController.ts b/src/vs/platform/quickinput/browser/quickInputController.ts
index 70778265398b0..c1f5e8e396f06 100644
--- a/src/vs/platform/quickinput/browser/quickInputController.ts
+++ b/src/vs/platform/quickinput/browser/quickInputController.ts
@@ -729,7 +729,7 @@ export class QuickInputController extends Disposable {
 			this.ui.container.style.top = `${this.titleBarOffset}px`;
 
 			const style = this.ui.container.style;
-			const width = this.dimension!.width * 0.75;
+			const width = Math.min(this.dimension!.width * this.options.relativeWidth(), this.options.maximumWidth());
 			style.width = width + 'px';
 			style.marginLeft = '-' + (width / 2) + 'px';
 
diff --git a/src/vs/platform/quickinput/browser/quickInputService.ts b/src/vs/platform/quickinput/browser/quickInputService.ts
index ccdb696556365..cb58b822aa705 100644
--- a/src/vs/platform/quickinput/browser/quickInputService.ts
+++ b/src/vs/platform/quickinput/browser/quickInputService.ts
@@ -70,6 +70,8 @@ export class QuickInputService extends Themable implements IQuickInputService {
 			idPrefix: 'quickInput_',
 			container: host.activeContainer,
 			ignoreFocusOut: () => false,
+			maximumWidth: () => 600,
+			relativeWidth: () => 0.62,
 			backKeybindingLabel: () => undefined,
 			setContextKey: (id?: string) => this.setContextKey(id),
 			linkOpenerDelegate: (content) => {
diff --git a/src/vs/platform/quickinput/test/browser/quickinput.test.ts b/src/vs/platform/quickinput/test/browser/quickinput.test.ts
index f33759e20e3eb..2b04e0562f5c6 100644
--- a/src/vs/platform/quickinput/test/browser/quickinput.test.ts
+++ b/src/vs/platform/quickinput/test/browser/quickinput.test.ts
@@ -80,6 +80,8 @@ suite('QuickInput', () => { // https://github.com/microsoft/vscode/issues/147543
 				container: fixture,
 				idPrefix: 'testQuickInput',
 				ignoreFocusOut() { return true; },
+				maximumWidth() { return 600; },
+				relativeWidth() { return 0.62; },
 				returnFocus() { },
 				backKeybindingLabel() { return undefined; },
 				setContextKey() { return undefined; },
diff --git a/src/vs/workbench/browser/workbench.contribution.ts b/src/vs/workbench/browser/workbench.contribution.ts
index 4d2143e0ecf97..dca5d499e7d32 100644
--- a/src/vs/workbench/browser/workbench.contribution.ts
+++ b/src/vs/workbench/browser/workbench.contribution.ts
@@ -490,6 +490,20 @@ const registry = Registry.as<IConfigurationRegistry>(ConfigurationExtensions.Con
 				'description': localize('workbench.quickOpen.preserveInput', "Controls whether the last typed input to Quick Open should be restored when opening it the next time."),
 				'default': false
 			},
+			'workbench.quickOpen.maximumWidth': {
+				'type': 'number',
+				'description': localize('workbench.quickOpen.maxWidth', "Limits the maximum width of Quick Open to the specified number of pixels."),
+				'default': 600,
+				'minimum': 200,
+				'maximum': 2000
+			},
+			'workbench.quickOpen.relativeWidth': {
+				'type': 'number',
+				'description': localize('workbench.quickOpen.relativeWidth', "Controls the width of Quick Open relative to the total window width."),
+				'default': 0.62,
+				'minimum': 0.1,
+				'maximum': 1.0
+			},
 			'workbench.settings.openDefaultSettings': {
 				'type': 'boolean',
 				'description': localize('openDefaultSettings', "Controls whether opening settings also opens an editor showing all default settings."),
diff --git a/src/vs/workbench/services/quickinput/browser/quickInputService.ts b/src/vs/workbench/services/quickinput/browser/quickInputService.ts
index 9be0b08b99691..3b5500ccbbda0 100644
--- a/src/vs/workbench/services/quickinput/browser/quickInputService.ts
+++ b/src/vs/workbench/services/quickinput/browser/quickInputService.ts
@@ -40,6 +40,8 @@ export class QuickInputService extends BaseQuickInputService {
 	protected override createController(): QuickInputController {
 		return super.createController(this.layoutService, {
 			ignoreFocusOut: () => !this.configurationService.getValue('workbench.quickOpen.closeOnFocusLost'),
+			maximumWidth: () => this.configurationService.getValue('workbench.quickOpen.maximumWidth'),
+			relativeWidth: () => this.configurationService.getValue('workbench.quickOpen.relativeWidth'),
 			backKeybindingLabel: () => this.keybindingService.lookupKeybinding('workbench.action.quickInputBack')?.getLabel() || undefined,
 		});
 	}