diff --git a/src/cli/utils/defineCommand.ts b/src/cli/utils/defineCommand.ts
index 953fae06..64442352 100644
--- a/src/cli/utils/defineCommand.ts
+++ b/src/cli/utils/defineCommand.ts
@@ -1,5 +1,6 @@
 import { consola } from 'consola';
 import { printHeader } from './printHeader';
+import { formatDuration } from '../../utils/formatDuration';
 
 export function defineCommand(
   cb: (...args: any[]) => void | boolean | Promise<void | boolean>,
@@ -11,9 +12,14 @@ export function defineCommand(
 
       const ongoing = await cb(...args);
 
-      if (!ongoing) consola.success(`Finished in ${Date.now() - startTime} ms`);
+      if (!ongoing)
+        consola.success(
+          `Finished in ${formatDuration(Date.now() - startTime)}`,
+        );
     } catch (err) {
-      consola.fail(`Command failed after ${Date.now() - startTime} ms`);
+      consola.fail(
+        `Command failed after ${formatDuration(Date.now() - startTime)}`,
+      );
       consola.error(err);
       process.exit(1);
     }
diff --git a/src/index.ts b/src/index.ts
index f650a54b..23db49bf 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -15,6 +15,7 @@ import pc from 'picocolors';
 import * as vite from 'vite';
 import { findOpenPort } from './utils/findOpenPort';
 import { relative } from 'path';
+import { formatDuration } from './utils/formatDuration';
 
 export { version } from '../package.json';
 export * from './types/external';
@@ -79,6 +80,7 @@ async function buildInternal(config: InternalConfig): Promise<BuildOutput> {
   const verb = config.command === 'serve' ? 'Pre-rendering' : 'Building';
   const target = `${config.browser}-mv${config.manifestVersion}`;
   config.logger.info(`${verb} ${pc.cyan(target)} for ${pc.cyan(config.mode)}`);
+  const startTime = Date.now();
 
   // Cleanup
   await fs.rm(config.outDir, { recursive: true, force: true });
@@ -94,7 +96,9 @@ async function buildInternal(config: InternalConfig): Promise<BuildOutput> {
   await writeManifest(manifest, output, config);
 
   // Post-build
-  config.logger.success('Entrypoints built');
+  config.logger.success(
+    `Built extension in ${formatDuration(Date.now() - startTime)}`,
+  );
   await printBuildSummary(output, config);
 
   return output;
diff --git a/src/utils/formatDuration.ts b/src/utils/formatDuration.ts
new file mode 100644
index 00000000..5d8102f9
--- /dev/null
+++ b/src/utils/formatDuration.ts
@@ -0,0 +1,6 @@
+export function formatDuration(duration: number): string {
+  if (duration < 1e3) return `${duration} ms`;
+  if (duration < 10e3) return `${(duration / 1e3).toFixed(3)} s`;
+  if (duration < 60e3) return `${(duration / 1e3).toFixed(1)} s`;
+  return `${(duration / 1e3).toFixed(0)} s`;
+}