Audio Converter Online — Convert Any Audio File Free
Drop your audio file here
or click to choose a file
Choose fileMP3, WAV, OGG, FLAC, M4A · Max 50 MB
Drop it!
Decoding audio...
MP3 works everywhere · WAV/FLAC are lossless · AAC for Apple · OGG for games
First time? Takes ~15 sec to set up, then instant.
Lossless at every level — higher number = smaller file, slower export.
Great for phones and Apple devices. Smaller than MP3 at the same bitrate.
Open format. Best for games, Android, and Linux.
Audio tags and album art are not preserved
FLAC, AAC, and OGG use a local audio engine (~25 MB, one-time download).
What Is an Audio Converter?
An audio converter changes the format of an audio file — for example, turning a FLAC file into MP3 so it plays on any device, or converting MP3 to WAV for lossless editing. Most online converters upload your file to a server for processing, which means waiting for uploads and trusting a third party with your files.
AudioTrick's converter runs entirely in your browser. Your files never leave your device — conversion happens locally using the Web Audio API and JavaScript encoding. It's faster than server-based tools (no upload wait), completely private, and works on any device with a modern browser.
How to Convert Audio Files Online
- Upload your audio — drop an MP3, WAV, OGG, FLAC, or M4A file (up to 50 MB).
- Choose output format — select MP3, WAV, FLAC, AAC, or OGG and adjust quality settings.
- Convert and download — click Convert & Download. Your file is ready in seconds.
Supported Audio Formats
| Format | Input | Output | Type |
|---|---|---|---|
| MP3 | ✓ | ✓ 128–320 kbps | Lossy |
| WAV | ✓ | ✓ 16/24-bit | Lossless |
| FLAC | ✓ | ✓ Level 0–8 | Lossless |
| OGG | ✓ | ✓ Low–Best | Lossy |
| AAC / M4A | ✓ | ✓ 96–256 kbps | Lossy |
| WebM | ✓ | — | Lossy |
Why Convert Audio Files?
Compatibility — MP3 plays on virtually every device and app. If your audio is in FLAC, OGG, or M4A and the target device doesn't support it, convert to MP3.
File size — a 5-minute WAV file is ~50 MB. The same audio as MP3 at 320 kbps is ~12 MB, and FLAC is ~25 MB. Convert to a compressed format for sharing, uploading, or saving storage.
Editing — most audio editors prefer WAV or other uncompressed formats. Convert to WAV before editing to avoid re-compressing lossy audio.
Archiving — FLAC is the standard for lossless audio archiving. It's 40–60% smaller than WAV with zero quality loss. Convert your WAV collection to FLAC to save space.
MP3 vs WAV: Which Format Should You Choose?
Choose MP3 if you need small file sizes for sharing, streaming, uploading to social media, or storing large music libraries. At 320 kbps, most people can't tell the difference from lossless.
Choose WAV if you're editing audio in a DAW, archiving recordings, or need the highest possible quality. WAV is uncompressed — what you put in is exactly what you get out. The tradeoff is much larger file sizes.
FLAC vs WAV: Lossless Formats Compared
FLAC compresses audio losslessly — the file is 40–60% smaller than WAV, but the decoded audio is bit-for-bit identical. It supports metadata tags, album art, and cue sheets. Ideal for music archiving and playback on most modern players.
WAV stores raw PCM data with no compression. It's universally supported by every audio editor and DAW. Best for editing workflows where you need instant access without decoding overhead.
Bottom line: archive in FLAC, edit in WAV. Both are lossless — the audio quality is identical.
How to Convert MP3 to FLAC
Upload your MP3 file, select FLAC as the output format, choose a compression level (5 is a good default), and click Convert & Download. The first conversion downloads a small audio engine (~25 MB, cached for future use), then encoding is instant.
Important: converting MP3 to FLAC does not restore the quality lost during MP3 encoding. The result is a lossless wrapper around the MP3 audio — useful for compatibility with FLAC-only players, but not for improving quality. For true lossless audio, start from the original uncompressed source.
How to Convert AAC to MP3
Upload your AAC or M4A file, select MP3 as the output, choose your preferred bitrate (320 kbps recommended for best quality), and click Convert & Download. Both AAC and MP3 are lossy, so converting between them causes some generation loss — use the highest bitrate to minimize it.
How to Convert OGG to MP3
Upload your OGG file, select MP3, choose 320 kbps for the best quality, and click Convert & Download. OGG Vorbis and MP3 are both lossy — converting between them loses a small amount of detail. If you need the audio in both formats, convert from the original lossless source when possible.
Best For
Converting FLAC or M4A to MP3 for universal compatibility. Turning MP3 into WAV or FLAC for editing and archiving. AAC output for Apple devices and iTunes. OGG for games, Android apps, and open-source projects. Reducing file sizes for email, cloud storage, or web publishing. Any format change where you want it done instantly, privately, and for free.
Frequently Asked Questions
Is it safe to convert audio files online?
Yes. AudioTrick processes everything in your browser using the Web Audio API. Your files are never uploaded to any server — conversion happens entirely on your device. We don't store, access, or transmit your files.
Does converting audio reduce quality?
Converting to a lossy format (MP3, AAC, OGG) removes some detail during compression, but at high quality settings the difference is inaudible for most listeners. Converting to WAV or FLAC preserves full quality — they are lossless. Converting between lossy formats (e.g., MP3 to OGG) causes generation loss — each encode removes a bit more detail.
What audio formats can I convert?
Input: MP3, WAV, OGG, FLAC, M4A, AAC, and WebM. Output: MP3 (128–320 kbps), WAV (16-bit or 24-bit), FLAC (compression level 0–8), AAC (96–256 kbps), and OGG Vorbis (Low to Best quality).
How to convert FLAC to MP3?
Upload your FLAC file, select MP3 as the output format, choose your preferred quality (320 kbps recommended for best quality), and click Convert & Download. The conversion takes just a few seconds — no upload needed.
What MP3 bitrate should I use?
320 kbps (Best) — nearly indistinguishable from lossless, ideal for music. 256 kbps (Great) — excellent quality, slightly smaller files. 192 kbps (Good) — solid quality for podcasts and casual listening. 128 kbps (Small) — smallest files, best for speech or when storage matters most.
What is the difference between FLAC and WAV?
Both are lossless — the audio quality is identical. FLAC compresses the data (typically 40–60% smaller than WAV), while WAV stores raw uncompressed PCM. FLAC is better for archiving and distribution; WAV is better for editing in DAWs. Use this converter to switch between them freely.
How to convert MP3 to FLAC?
Upload your MP3, select FLAC, and click Convert & Download. Note that this creates a lossless wrapper around the already-lossy MP3 audio — it won't restore lost quality. It's useful for FLAC-only players or workflows.
How to convert AAC/M4A to MP3?
Upload your AAC or M4A file, select MP3, choose 320 kbps, and click Convert & Download. Both formats are lossy, so some generation loss is expected. For the best result, use the highest bitrate.
How to convert OGG to MP3?
Upload your OGG file, choose MP3 at 320 kbps, and click Convert & Download. Like all lossy-to-lossy conversions, quality decreases slightly. Convert from the original lossless source when possible.
Are audio metadata and tags preserved?
No. Audio metadata (ID3 tags, album art, track titles) is not preserved during browser-based conversion. The audio content itself is fully preserved — only the metadata wrapper is lost.
Can I convert audio files on my phone?
Yes. AudioTrick works on any modern browser — Safari on iPhone, Chrome on Android, and all desktop browsers. No app download required. Just open the page, drop your file, and convert.
What audio formats are supported?
MP3, WAV, OGG, FLAC, M4A, AAC, and WebM. The output is always a 320 kbps MP3 file.
Is my audio uploaded to a server?
No. All processing happens locally in your browser using the Web Audio API. Your files never leave your device.
How good is the audio processing quality?
We use the same techniques found in professional audio software: convolution reverb with real impulse responses, phase vocoder time-stretching, HRTF-based spatial audio, EBU R128 peak limiting, and LUFS loudness normalization. What you hear in the preview is exactly what you get in the export — we guarantee preview/export parity across every tool.