Audio converter

Does converting audio formats lose quality?

Updated: Nov 9, 2026

Drag & drop one or more files here, or click to choose

mp3, wav, m4a, aac, ogg, flac… and mp4, mov, mkv, webm… video. Up to 300MB per file

No file handy?

Free with a limit, Energy is charged once your free turns run out. Your file is not uploaded, everything runs right in your browser.

Libraries and licenses

This tool is built on the following open-source libraries, used under their respective licenses:

A whole folder to convert, or one file nothing will open?

Dropping several files at once is something this page now handles. A whole large folder, or rescuing an odd container your machine refuses to read, is still hand work. Our team takes those on.

Message the team

Convert audio and video files to MP3, WAV, M4A directly in your browser (FLAC accepted as input). No install needed, and your file is not uploaded to a server. Note: This only changes the file's container; it cannot make the original audio sound better.

What is audio format conversion?

It's repackaging audio data into a different standard. There are two main groups:

Lossless (WAV, FLAC): Keeps 100% of the original sound, but files are huge.
Lossy (MP3, M4A): Discards frequencies the human ear barely notices to shrink file size.

The golden rule: Going from Lossless to Lossy loses data permanently. Going the other way only wastes your disk space!

Does converting MP3 to WAV make it sound better?

No. MP3 is lossy. The data thrown away during that first compression is gone for good. Converting it back to WAV just inflates the file size 5-10x with zero quality improvement. You can't bring back lost data.

How to maintain the best quality when converting?

If your source is WAV/FLAC: Keep the original if you can; this page's lossless export option is WAV.
If you need smaller files: Compress straight from the original source to MP3 or M4A once. Never compress an already compressed file.

Does round-trip converting degrade quality?

Yes, if lossy formats are involved. Every time you convert between lossy formats (e.g., MP3 to M4A), the encoder throws away more data. The more round trips, the worse it sounds. Best practice: Keep one lossless master (WAV) and encode from it whenever you need a new format.

Quick format selection guide

Use Case	Format	Why
Sharing, emails, older devices	MP3	Universal compatibility, very small size.
Listening on modern devices	M4A	Better sound than MP3 at the same file size.
Professional audio/video editing	WAV	100% original quality, zero compression latency.
Long-term storage	WAV	This page exports WAV/MP3/M4A only; FLAC is accepted as input but never as an export.

Tip: Need just a short clip? Use our in-browser Audio cutter.

How do I extract audio from a video as an MP3?

Drop the video file into the upload box, choose MP3 as the export format, and hit convert. The picture is discarded and only the audio track is kept, exported as a new MP3 file, all running right in your browser, with the file staying on your device.

Who needs an audio converter?

Shrink massive meeting recordings into lightweight MP3s for sharing
Rescue weird audio formats so older devices can actually play them
Prep uncompressed WAV files for video and music editors
Squeeze huge audio files to fit email or chat app limits
Extract just the audio track out of a video file

The converter runs entirely in your browser: the file is not uploaded anywhere.

Pick the files to convert
Drag in one or several audio or video files at once; each becomes its own row with its own status. For video, the picture is discarded and only the audio track is kept.
Choose the target format
MP3 for small files and the widest compatibility, WAV when you need the quality intact for further processing, M4A for the Apple ecosystem.
Set the bitrate for MP3 or M4A
A higher bitrate means a bigger file and less lost detail. 192 to 320 kbps is the usual range for music.
Convert and download
Press once and the files run one after another; each row shows its own download button as soon as it finishes. The new file is produced in the browser; the original is left unchanged.

Converting only repackages the audio data into a different container. It does not make a recording sound better.
Going from MP3 to WAV cannot recover the detail lost in the first compression. It only makes the file larger.
Very long files use a lot of browser memory, because all the data is processed on your machine. That is why several files run one at a time, never in parallel.
Each file counts as its own run: dropping 3 files uses 3 turns, exactly as converting them one by one would.

Input and output

Accepted formats: MP3, WAV, M4A, AAC, OGG, OGA, FLAC, plus MP4, MOV, WEBM, MKV, M4V video
Export formats: MP3, WAV, M4A
For video files: The picture is discarded and only the audio track is kept
Output: A new file in the format you picked. The original is left unchanged

Processing

Where it runs: In your browser; the file is not uploaded to any server
Scope: Repackages the audio data into a different container. It does not make a recording sound better and cannot recover what the first compression discarded

Limits

Duration and size ceiling: Up to 60 minutes and 300MB per file A browser-memory safety ceiling, not an account tier

Price and account

On a free run: Free within the tool's own free quota If your free runs do not cover the files you picked, the page tells you before you press convert
On the paid lane: Priced per run, shown as its own line on the bill once your free turns run out The exact Energy price is listed on the Pricing page
Account required: Not for free runs. Paid runs need a sign-in
Privacy: Files stay on your device, not uploaded to a server

Processing method

Description: Converts audio or video to another format, and pulls the audio out of a video.
Runtime: On your device
Guest / Signed in: Free · Up to 60 min/file, 300MB
Paid: 1E per run · Up to 60 min/file, 300MB
Features: convert

Sep 24, 2026
Description names extracting audio from video; added a how-to Q&A
The page description now names extracting audio from video alongside format conversion, matching how people actually search. Added a Q&A walking through how to pull audio out of a video as an MP3.
Aug 24, 2026
Plainer wording in the specifications table
The limits row in the Specifications tab now reads as a plain maximum instead of a finance-flavoured word. The figures and their meaning are unchanged.
Aug 24, 2026
Real batch processing: one row per file, sequential run
Dropping or picking several files now creates one visible row per file instead of hiding extras behind a counter. Pressing "Convert" once runs the files one after another; a failed file does not affect results already finished, and each file still counts as its own quota turn.
Aug 23, 2026
Corrected leftover FLAC mentions in specs
The export-format picker on this page has never offered FLAC (only MP3, WAV, M4A), but the title, description and specifications table still listed it. Those lines are now corrected to match the real picker.
Jul 30, 2026
Price row corrected to match the quota principle
The "Price" row in the Specifications tab no longer says "no run counter": free is a bounded quota tier, not an uncounted run (docs/biz/limitation.md §1.7).
Jul 27, 2026
Audio converter opened to users
The tool left its coming-soon state and went live: conversion happens in the browser with no upload, video files are accepted for their audio track, and it exports MP3, WAV, FLAC and M4A with a bitrate option. The page gained a section listing the open-source libraries used and their licenses.
Jul 26, 2026
Specifications tab added
The page gained a Specifications tab, lifting the export formats and the scope of the work out of the article. The duration, size and price rows say plainly that nothing is published yet, because the tool is not open and no figure is real. The manual-service offer moved above the tab strip.
Jul 25, 2026
Rebuilt on the shared tool frame
The page moved onto the frame shared by every tool page and gained an Instruction tab describing the planned steps. The Intro tab gained a definition section and guidance on picking a format per use case. The tool itself is still not open.
Jul 22, 2026
URL shortened to /media-converter/
The former /doi-duoi-nhac/ and /audio-converter/ paths 301'd to the new address.
Jul 19, 2026
Page published with full content
The page got real written content about audio conversion and was opened to search indexing, replacing an empty coming-soon placeholder.

Audio converter

Does converting audio formats lose quality?

A whole folder to convert, or one file nothing will open?

What is audio format conversion?

Does converting MP3 to WAV make it sound better?

How to maintain the best quality when converting?

Does round-trip converting degrade quality?

Quick format selection guide

How do I extract audio from a video as an MP3?

Who needs an audio converter?

Pick the files to convert

Choose the target format

Set the bitrate for MP3 or M4A

Convert and download

Input and output

Processing

Limits

Price and account

Processing method

More to read

Extract music from a YouTube or TikTok video: MP3 or split stems

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