Privacy First
Uploaded files are automatically and permanently deleted within two hours.
Automatic deletion
AIFF to MP3
Convert AIFF audio to compact, widely supported MP3 in seconds.
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Free: Convert your audio at no cost, with no sign-up required.
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Privacy: Your AIFF and MP3 files are automatically deleted after 2 hours.
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Quality: Create clear MP3 audio while preserving as much source fidelity as possible.
Bitrate
Determines audio quality and file size. Select 'Auto' and we'll automatically pick the best options for your file.
Audio conversion
Convert AIFF to MP3
Convert AIFF to MP3 with clear bitrate choices and downloads that appear as each track finishes. Uploaded audio is automatically deleted after 2 hours.
How to use Converter App
1
Add audio
Add AIF, AIFF, or AIFC audio, choose Auto or 64 320 kbps in Expert Settings, then upload.
2
Convert to MP3
We convert your audio to MP3 on fast servers, with large uploads and up to 20 files.
3
Download MP3s
Download each MP3 when ready; for batches, save them one by one when Download appears.
Key features
Free without limits
Convert AIFF, AIF, or AIFC audio for free, with no registration and no daily usage limit.
Playable MP3 output
MP3 audio opens in more players, editors, messaging apps, and sharing workflows than AIFF.
Bitrate control
Choose Auto or 64 320 kbps to balance sound detail and MP3 size.
20 file batches
Upload up to 20 AIF, AIFF, or AIFC recordings and download each MP3 as it finishes.
Experience & privacy
Built for reliable audio conversion.
Backed by 10+ years of engineering expertise in large-scale data and scientific computing, it’s built for real-world workflows that require uncompromised audio quality, accelerated processing speeds, and reliable, high-level performance.
Trusted by Users
Rated 5 stars on Trustpilot for speed, reliability, and ease of use.
User trust
Academic Use
Referenced in published research and used for interview transcription and qualitative data analysis.
Research use
FAQ
Frequently Asked Questions
How much smaller will my MP3 be compared to the AIFF?
Significantly smaller. A 4-minute AIFF song is typically around 40 MB. The same track as a 320 kbps MP3 is about 9 MB, and as a 192 kbps MP3 around 5 MB — a 75–90% reduction. The exact saving depends on the bitrate you choose.
Will converting AIFF to MP3 reduce audio quality?
Yes, but for most listeners the difference is inaudible at higher bitrates. MP3 uses psychoacoustic compression to keep only what your ears can detect — at 320 kbps the result is effectively transparent. For music you'll listen to critically, use 320 kbps. For podcasts or voice recordings, 128 kbps is fine.
I exported from GarageBand or Logic Pro — will this converter work with that file?
Yes. GarageBand and Logic Pro default to AIFF when bouncing a project, which means recipients on Windows or Android often can't play the file. Upload your bounce directly — AIF, AIFF, and AIFC are all accepted.
Will my track title, artist name, and album art be preserved?
In most cases, yes. Track title, artist, album, year, track number, and embedded album art are transferred to the MP3's ID3 tags. Some very old AIFF files without existing metadata will produce MP3s without tags, but modern exports from GarageBand, Logic Pro, and iTunes include full metadata.
What bitrate should I choose?
Use Auto if you're unsure — it picks the best setting for your file. For manual control: 320 kbps for music you'll archive or listen to carefully; 192 kbps for everyday listening; 128 kbps for speech or podcasts. Avoid going below 128 kbps for music — compression artifacts become noticeable.
Can I convert a whole album at once?
Yes — upload up to 20 AIFF files in one batch. Each MP3 becomes available to download as soon as it's ready, so you don't have to wait for the full batch to finish.