Convert audio format online — free
Quick answer Change format and bitrate in one step — useful when a platform, editor, or device only accepts a specific file type.
Change format and bitrate. Accepts MP3, WAV, OGG, M4A, FLAC, AAC, Opus, AMR and WMA — 15MB max (Pro: 20MB). Use a preset for common jobs.
Free to try · No signup required · Commercial use allowed · How we test · About VoxCraft
Convert audio format online for free with VoxCraft. Change between MP3, WAV, OGG, FLAC and other common formats in the browser — pick an output type and bitrate, then download. No install or signup required on the free tier.
Format conversion is a utility job, not a magic quality upgrade. Converting a low-bitrate MP3 to WAV does not restore lost detail; it only changes the container/encoding. Use conversion when a video editor, podcast host, or client specifies a format you do not have yet.
Creators often convert after extracting audio from video, after generating speech in Voice Studio, or before merging clips. Keeping a lossless master (WAV/FLAC) while exporting MP3 for delivery is a common professional habit.
VoxCraft keeps the tool focused: one file at a time, clear format choices, browser-based. For batch library migration of hundreds of tracks, a local script or DAW batch exporter may still be faster.
How it works
- Upload your source file (WAV, MP3, OGG, M4A or FLAC, 15MB max, 20MB with Pro).
- Choose the output format from the dropdown.
- For MP3/OGG/M4A output, set the bitrate — higher means better quality and a larger file.
- Tap Convert and download the result.
Who uses this
Podcast hosting
Convert a WAV master down to a smaller MP3 at 128–192 kbps for faster hosting and streaming.
Video editors
Convert MP3 voiceovers to WAV, since some editing software handles uncompressed audio more reliably.
Archiving
Convert a compressed file to FLAC when you want a lossless copy for long-term storage — note this won't restore quality already lost to compression.
Compatibility
Convert to whatever format a specific app, device or platform requires.
Tips for better results
- Do not expect MP3→WAV to improve fidelity; keep originals when quality matters.
- For speech voiceovers, 128–192 kbps MP3 is usually enough; music often wants higher.
- Convert after denoising when the source is noisy.
- Name files clearly (project_scene_v3.wav) so version chaos does not creep in.
- Converting from a specific format? There are guides for Opus to MP3 (WhatsApp voice notes), AMR to MP3, WMA to MP3, M4A to WAV and OGG to WAV.
Frequently asked questions
Which formats are supported?
Common speech and production formats such as MP3, WAV, OGG, and FLAC. Check the tool UI for the live list.
Is conversion free?
Yes within free-tier limits, no account required to start.
Does converting to FLAC improve a poor MP3?
No. Lossless formats preserve what is already there; they do not invent missing high frequencies.
What bitrate should I use for YouTube voiceover?
For speech, 160–192 kbps MP3 is a practical default. Always do a short listen on phone speakers.
Can I batch-convert many files?
This tool is one file at a time. Repeat uploads or use a local batch tool for large libraries.
Should I convert before or after merging?
Prefer a consistent format before merge when possible so sample rates align cleanly.
Is there quality loss every conversion?
Repeated lossy→lossy encodes accumulate damage. Minimize generations; keep a lossless master.
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