MP3 vs WAV vs FLAC vs OGG: Which Audio Format?

MP3, WAV, FLAC, OGG — what they actually mean, when to use each, and how to convert between them free in your browser.

Lossy vs. Lossless, No Jargon

Every audio format belongs to one of two families. Lossless stores every sample exactly as recorded. What goes in is bit-for-bit what comes out. Lossy permanently throws away sound data the encoder judges inaudible, shrinking the file dramatically at the cost of detail you'll never get back.

The one rule that matters: you can always go lossless to lossy, never truly back. WAV to MP3 is fine. Converting that MP3 back to WAV just wraps already-damaged audio in a bigger file. The lost detail doesn't return. So keep a lossless master of anything important, and spin lossy copies off it whenever you need them.

The Four Formats That Matter

• MP3, the universal workhorse. Lossy, about 10x smaller than WAV at typical settings. Plays on literally everything: phones, cars, old stereos, every app ever made. The default for sharing, streaming, podcasts, and ringtones. At 192 to 320 kbps it sounds excellent for casual listening.
• WAV, the uncompressed master. Lossless and huge, around 10 MB per minute of stereo. The studio standard for recording and editing, because every edit starts from perfect data. Awful for sharing or storing big libraries. That's what FLAC is for.
• FLAC, the smart archive. Lossless, compressed to roughly half the size of WAV with zero quality loss. Ideal for archiving a music collection: bit-identical to the original, much smaller than WAV. The catch is compatibility. Apple devices and some car stereos prefer ALAC or skip FLAC entirely.
• OGG (Vorbis), the open alternative. Lossy, roughly comparable to MP3 at similar bitrates, sometimes a touch better. Its niche is game audio, some streaming, and open-source projects. Compatibility is the weakness. Plenty of phones and players don't handle it natively.

You'll also run into M4A/AAC, Apple's ecosystem default, lossy and very good quality per bit, and OPUS, superb for voice at low bitrates and common in messaging apps. The big four above cover the vast majority of real-world needs.

Which One to Use When

• Recording or editing: WAV. Always start from uncompressed audio so every cut, effect, and export begins with full-quality data.
• Archiving a music collection: FLAC. Half the size of WAV, identical sound, and you can convert to anything later without generational loss.
• Sharing, streaming, or messaging: MP3. Universal compatibility beats theoretical quality. A file nobody can play is useless.
• Podcasts and voice notes: MP3 at 96 to 128 kbps mono. Voice needs far less data than music. Going higher just burns space.
• Ringtones: MP3. Small, compatible, and phone speakers can't reveal compression artifacts anyway. Honest note: browsers can't encode Apple's M4R ringtone format. MP3 ringtones work on Android, and iPhones need a conversion through a computer.
• Web audio and games: OGG or MP3 depending on what your engine supports. OPUS if voice chat is the use case.

Converting Without Shooting Yourself in the Foot

1. Open the Audio Converter and load your file. It reads MP3, WAV, FLAC, OGG, and more, all locally in your browser.
2. Pick the target format and quality. For MP3 output, 192 kbps is the sweet spot for music. 320 if you're picky. 96 to 128 kbps mono for voice.
3. Download the converted file. That's the whole process. No queues, no accounts, no watermarks.

Two rules to convert by. First, convert from the highest-quality source you have. Never MP3 to MP3 when you could go WAV to MP3 instead, because each lossy generation compounds the damage. Second, match the format to the job using the list above instead of defaulting to MP3 for everything. Your archive will thank you.

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