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🎵 Free Audio Converter

Convert MP3, WAV, OGG to WebM — Free

Convert MP3, WAV, FLAC, AAC, OGG, M4A and more. Choose your output format. Fast, free, high-quality. No signup needed.

MP3 WAV OGG FLAC AAC M4A WMA OPUS → WebM (Opus)

1. Choose Your Audio File

Supported: MP3, WAV, OGG, FLAC, AAC, M4A, WMA, OPUS, AMR · Max 20MB

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Drop your audio file here

or

Max size: 20MB · Files auto-deleted · No watermarks

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⚙️ 2. Configure Audio Settings

Output Format

Audio Converted!

Your file is ready to download

Original

Converted

Saved

Duration

Format

Codec

Bitrate

Status

⬇️ Download Audio

Why ToolTanks Audio?

  • 🎵

    Opus Codec

    Best quality at any bitrate — better than MP3

  • 📦

    Smaller Files

    30-50% smaller than MP3 at same quality

  • 🌐

    Web Optimised

    Native browser support, no plugins needed

  • 🔒

    100% Private

    Files auto-deleted after 10 minutes

  • ✂️

    Smart Trim

    Cut your audio before converting

  • 📱

    All Devices

    Works on phone, tablet and desktop

Supported Input Formats

MP3 MPEG Audio Layer 3 — most common format
WAV Uncompressed audio — largest quality
OGG Ogg Vorbis — open source format
FLAC Lossless audio — no quality loss
AAC Advanced Audio Coding — used by Apple
M4A Apple audio format — iTunes files
WMA Windows Media Audio — Microsoft
OPUS Modern codec — best compression

📤 Output Formats:

MP3WAVAACM4AOGGWebM

Audio Converter FAQ

Everything you need to know about MP3, WAV, AAC, OGG and WebM audio conversion

MP3 is best for maximum device compatibility. WebM (Opus) gives the smallest file size with excellent quality. WAV is uncompressed for studio use. AAC and M4A are best for Apple devices.

WAV is uncompressed PCM audio — it preserves every audio sample. A 3-minute song can be 30-50 MB in WAV but only 3-5 MB as MP3 at 128kbps. Use WAV only when you need lossless quality.

Yes — Opus is a modern codec that delivers better audio quality than MP3 at the same bitrate. A 128kbps Opus file sounds noticeably better than 128kbps MP3. Use WebM/Opus for web publishing.

Yes — upload your FLAC file, select MP3 as output format, choose your quality preset, and click Convert. Your lossless FLAC will be converted to a compressed MP3.

Yes. All files are processed securely on our servers and automatically deleted after 10 minutes. We never store, listen to, or share your audio.

Yes — use the Trim Audio option to cut by start/end time in seconds. Perfect for removing silence or extracting a specific section from a long recording.