windows app

Convert MP4 to M4A

Convert MP4 videos to M4A audio files locally on Windows. No upload, no signup, no watermark.

offlinewindows 10 & 11free

Get it onMicrosoft Storecoming soon to the Microsoft Store

mp4m4a

features

what the app does

Paste from clipboard — Ctrl+V joins the queue (e.g. a Win+Shift+S screenshot lands without saving to disk).
Batch convert whole folders, sub-folder structure preserved.
Auto-convert watcher — point the app at a watched folder; converted files appear in your output folder.
Right-click .mp4 files in File Explorer — "Convert to M4A" opens the app pre-loaded with your selection.
Ten UI languages, light + dark themes following the system.
Offline by design — no telemetry, no account, no user-data exfiltration.

details

MP4 to M4A on your pc

MP4 to M4A Converter helps you convert MP4 videos to M4A audio files on Windows, with local processing and no upload.

how it works

This mp4 to m4a converter uses ffmpeg.wasm to process your videos on your Windows machine. The conversion stays on your device from start to finish.

paste from clipboard

Press Ctrl+V to add a copied video straight into the queue. It is a quick way to bring in a clip from File Explorer or another app without browsing for it.

batch conversion

You can convert whole folders of videos in one run. Subfolders are kept in the output, so the result matches the source structure.

auto-convert watcher

Use the Auto-convert page to set a watched folder and an output folder. Leave the app in the Windows system tray, and new videos you drop there are converted to audio files in the background.

right-click in explorer

A native shell extension adds Convert to M4A to the right-click menu for .mp4 videos in File Explorer. The app opens with your selection already loaded.

languages & themes

The app UI is available in ten languages. Light and dark themes follow your Windows system theme automatically.

offline by design

No telemetry, no account, and no user-data exfiltration. Your videos never leave the device.

free & pro

The free version lets you convert MP4 to M4A with no file size or file count limits. Upgrade to Pro with a one-time lifetime purchase to remove ads and unlock batch conversion. No subscriptions or recurring payments.