Virtuous and responsible file transfer

Convert audio fileslocally

Drop your audio files

or click to select

100% free — no registration required

Convert and compress audio files locally (MP3, M4A, WAV, AIFF, FLAC, OGG), in batch, with no server.

Understand how it works

100% local

Processing on your machine

No storage

Your files are not kept

Sovereign

GDPR compliant

Free

No signup

Understand

How does FileVert audio converter work?

FileVert audio converter processes your files directly in the browser. No audio is sent to any server.

100% local processing on your device
No transfer to our servers
Batch compression and conversion

Why prepare a demo before sending?

Online converters upload your files to their servers before conversion
An unreleased track should not pass through a third-party cloud
Metadata (software, dates, tags) can reveal your setup or identity
Recipients (label, client, A&R) want to listen right away, not unzip a folder
Streaming platforms publish: that is not a private, ephemeral send

What changes everything

Prepare your demos and audio tracks before sending. In bulk, in your browser.

The challenge

Heavy demo, risky cloud

A 200 MB WAV exceeds email limits, and online converters upload your masters to their servers before converting.

WAV 186 MBdemo EPcloud ✗

Batch

Whole EP or folder in one pass

Up to 200 files and 2 GB: drop the folder, convert every track to the same format, download a ZIP or transfer directly.

demo-ep/

01-intro.wav

02-verse.wav

03-hook.wav

04-outro.wav

playlist.m3u

×12 · 2 GB

Formats

MP3, M4A, OGG, WAV, AIFF or FLAC for the whole batch

Harmonize a mixed catalogue to one target format. Metadata (author, software, dates) is stripped on export.

MP3M4AOGGWAVFLAC

1 target format

whole batch, metadata stripped

Bitrate

Light for sending, clear for listening

Set bitrate (64 to 320 kbps) for your use case: vocal draft, label demo or podcast. Smaller files, speech stays intelligible.

Before

186 MB

After

18 MB

192 kbpsclear playback

Video → audio

Extract audio from MP4 or MOV

Interview, live set or video capture: get the audio track only as MP3, M4A or another format, without re-importing elsewhere.

interview.mp4

video track ignored

interview.mp3

audio only

Explore flow

Convert here, let them listen next

Files stay on your machine until you send. Transfer in Explore mode: the recipient listens in a playlist, no forced download.

Ready on your device

Audio player in Explore mode

Playlist and direct listening for the recipient

Transfer these files →

Guide: ephemeral audio playlist →

After the tool

Send the result: standard mode or Explore mode

When your file is ready on your device, send it with FileVert Transfer from the built-in send action. Choose whether the recipient downloads immediately (standard) or previews first in the browser without a silent local copy (Explore mode).

Standard mode

Secure link: the recipient downloads the file in the usual way. Best for final deliverables, archives and heavy attachments.

Guide: send very large files

Explore mode

Offer in-browser playback (tracks, playlist) before downloading the files.

Guide: ephemeral audio playlist

Supported formats for audio conversion

FileVert audio converter covers the most requested formats and enables fast local conversions with no upload.

Input	Output	Use case
MP4 / MOV / WEBM	MP3 / M4A / OGG / WAV / AIFF / FLAC	Extract audio from video
M4A / AAC	MP3 / WAV / AIFF / FLAC / OGG	Make the file compatible everywhere
WAV / FLAC / AIFF	MP3 / M4A / OGG	Reduce size without hurting playback
AIFF / AIF	MP3 / M4A / WAV / FLAC / OGG	Mac, DAW and lightweight sharing interoperability
OGG / OPUS	MP3 / M4A / WAV / AIFF	Share on more universal platforms

Most searched audio conversions

Convert MP4 to MP3

Import an MP4 file, choose MP3 as the output format and get audio only. Ideal for extracting voice, a podcast or a music track.

Convert M4A to MP3

Switch from M4A to MP3 for maximum compatibility with players, car stereos and older distribution environments.

Convert WAV to MP3

Greatly reduce WAV file size to speed up sharing, download and transfer while keeping web-friendly quality.

Dedicated audio compression: reduce size without hurting playback

Beyond conversion, FileVert offers local audio compression for real workflows: fast sharing, web delivery, archiving and batch processing.

Voice compression for podcasts and interviews

Reduce the size of long voice recordings (WAV, FLAC, M4A, AIFF) before publishing. Faster delivery without losing speech clarity.

Compression for fast transfer

Prepare lightweight audio batches for email, team chat or client sharing. Batch processing cuts transfer time on slow connections.

Compression before archiving

Lighten large recordings before local storage or document deposit. Keep useful quality while reducing long-term storage footprint.

Use cases that set FileVert audio converter apart

Some needs go beyond simple format conversion: video extraction, catalogue normalization and optimized preparation before transfer.

Extract audio from video

Turn MP4/MOV/WEBM into usable audio tracks (MP3, M4A, OGG, WAV, AIFF) for podcasts, transcription or editing.

Harmonize a multi-format catalogue

Normalize mixed libraries (WAV, FLAC, AAC, OGG, AIFF) to one target format for easier distribution, playback and archiving.

Prepare files for FileVert transfer

Convert and compress locally before sending to speed up transfers while keeping audio content private.

A complete and fast audio tool

Choose output format, bitrate and quality for your use case.

Smart compression

Reduce audio file size without sacrificing clarity.

Multi-format conversion

Switch from WAV to MP3, M4A, OGG, AIFF or FLAC in a few clicks.

Total privacy

Your audio files stay on your machine from start to finish.

PRIVACY

Privacy and digital sobriety

No cloud upload

No audio file retention

Local browser-side processing

0 data stored

All audio processing is done locally on your machine.

Natural workflow with FileVert

Once your audio files are ready, transfer them immediately.

Start a transfer

Our other tools from FileVert Studio

Prepare your files with our other free, local tools.

Image Upscaler

Upscale x2 or x4 without loss of sharpness for your visuals.

Use

Image Compressor

Reduce the weight of your images without visible quality loss.

Use

Image converter

Convert to JPG, PNG, WebP or AVIF, in batch, locally in your browser.

Use

Crop and references

Same ratio across the batch, reference images and thumbnail board for image to video.

Use

Vectorize an image, a logo

Vectorize JPEG, PNG, WebP, AVIF, GIF, BMP and SVG to SVG locally, with editable layers and pro exports.

Use

Compress PDF

Compress and optimize your PDF documents instantly.

Use

Redact and anonymize PDF and photos

Face blur, PII redaction, EXIF and PDF metadata strip. 100% local — work on a copy, keep the original.

Use

What’s next?

Everything you can do with FileVert

Prepare locally, send up to 200 GB, let recipients preview without downloading, collaborate and measure your impact. Discover every use case.

See all use cases

Frequently asked questions

Everything you need to know about FileVert audio converter

Where are my audio files processed?

All processing happens locally in your browser. No audio file is sent to a server.

Which audio formats can I convert?

Input: MP3, M4A, AAC, WAV, AIFF, FLAC, OGG, OPUS and MP4, MOV, MKV, WEBM video. Output: MP3, M4A, OGG, WAV, AIFF and FLAC.

Can I convert several audio files at once?

Yes. Up to 200 files and 2 GB per session, whole folders included. ZIP download or direct transfer to FileVert.

Is metadata stripped on export?

Yes. Author, software, dates and ID3 tags are removed on conversion. Useful for demos that should not reveal your studio setup.

How do I send a demo so people can listen without downloading?

Convert and compress here locally, then transfer in Explore mode. The recipient opens the link and listens in a built-in player (playlist, m3u), no forced download.

How do I set quality and bitrate?

Use the quality slider: the displayed bitrate (64 to 320 kbps) adapts to the chosen format. Ideal to lighten a demo while keeping clear playback.

How do I turn MP4 into MP3?

Drop your MP4 (or MOV, WEBM), choose MP3 as output. The video track is ignored, only audio is extracted, 100% local.

Do I need an account?

No. The tool is free and available immediately, no sign-up required.

FileVert local audio converter: convert, compress and prepare audio files before transfer, with no server upload.