How do I convert WAV to MP3?

Upload your WAV file, choose MP3 as the output, and tap Convert Audio. Your MP3 downloads in seconds.

Is the audio converter free?

Yes, completely free. No signup, no watermark, no limits.

Do my files get uploaded?

No. Everything happens in your browser. Your files never leave your device.

Which formats can I convert between?

You can save as MP3, WAV, AAC, FLAC or Opus, and you can also upload M4A and OGG.

Which format should I pick?

MP3 and AAC are small and universal. WAV and FLAC keep full quality but are larger. Opus is best for voice and small files.

Can I convert audio on my phone?

Yes. Sondra works in mobile browsers (up to 100MB on mobile, 500MB on desktop), with no app to install.

Online Audio Converter

Convert audio between MP3, WAV, M4A, AAC, FLAC and Opus right in your browser. A free MP3 and audio file converter with no upload and no signup. Your files stay on your device.

Drop your audio file here

or click to select a file

Supports MP3, WAV, AAC, FLAC, OGG, M4A, Opus and more (up to 500MB on desktop, 100MB on mobile)

Instant Never Uploaded Free

How It Works

1. Upload your audio

Pick any audio file. MP3, WAV, M4A, FLAC, OGG and more all work, and it stays on your device.

2. Pick a format

Choose MP3, WAV, AAC, FLAC or Opus, whatever you need.

3. Download

Save your converted file and you are done.

Popular audio conversions

WAV to MP3M4A to MP3FLAC to MP3AAC to MP3OGG to MP3MP3 to WAVMP3 to AACWAV to FLAC

Convert audio files online, free and private

Sondra is a free audio converter that runs entirely in your browser. Change WAV to MP3 to save space, M4A to MP3 for wider support, or FLAC to MP3 for easy sharing. You can also go the other way to WAV and FLAC when you want lossless quality. No account, no watermark, and nothing is uploaded.

Each format has its place. MP3 and AAC are small and play almost everywhere. WAV and FLAC keep full quality but are larger. Opus gives you the smallest size at good quality, which is great for voice. Since everything runs locally with FFmpeg, your audio never leaves your device, so it is a safe choice for private recordings, client work or unreleased tracks.

Frequently Asked Questions

What to do next

Compress your audioShrink the file size for email, messaging or upload.Remove background noiseClean up hum, hiss and room noise from the recording.Extract audio from videoGot a video instead? Pull the sound out as MP3 or WAV.