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FLAC to MP3 converter

Convert lossless FLAC audio into universally compatible MP3 files — right in your browser, with no uploads, accounts, or size limits.

Drop FLAC files here

or click to browse. Everything converts locally in your browser — nothing is uploaded.

Engine loads on first use
Output bitrate

100% private

Files are decoded and encoded in your browser. Nothing ever leaves your device.

Batch convert

Queue up as many FLAC files as you like and convert them in one pass.

Choose quality

Pick from 128 to 320 kbps to balance fidelity against file size.

How to convert FLAC to MP3

  1. 1. Add your files. Drag and drop one or more .flac files, or click to browse.
  2. 2. Pick a bitrate. Choose the MP3 quality that fits your needs — from 128 kbps for the smallest files to 320 kbps for the highest fidelity.
  3. 3. Convert and download. The converter runs locally in your browser and hands you finished MP3 files. Nothing is uploaded.

Why convert FLAC to MP3?

FLAC (Free Lossless Audio Codec) stores audio bit-for-bit, preserving every detail of the original recording. That fidelity comes at a cost: FLAC files are large and are not supported by every phone, car stereo, or portable player. MP3 is a lossy format with near-universal compatibility and dramatically smaller files. Converting FLAC to MP3 trades a small, usually inaudible amount of quality for portability — ideal when you want your music to play anywhere without filling up storage.

Which MP3 bitrate should you choose?

  • 320 kbpsHighest quality — best for archiving and critical listening.
  • 256 kbpsHigh quality — transparent for most listeners.
  • 192 kbpsBalanced quality and file size.
  • 128 kbpsSmallest files — good for voice or low bandwidth.

Frequently asked questions

Is FLAC to MP3 conversion really private?
Yes. Conversion runs entirely in your browser using FFmpeg compiled to WebAssembly. Your audio files are never uploaded to a server — they are decoded and re-encoded locally on your own device, so nothing leaves your computer.
What bitrate should I choose when converting FLAC to MP3?
320 kbps gives the highest MP3 quality and is the best choice for archiving or critical listening. 256 kbps and 192 kbps are transparent for most listeners, while 128 kbps produces the smallest files for voice or low-bandwidth use.
Will converting FLAC to MP3 reduce audio quality?
FLAC is lossless and MP3 is lossy, so some data is discarded during encoding. At 256–320 kbps the difference is inaudible to most listeners, but the original FLAC will always be the highest-fidelity copy. Keep your FLAC files if you need a lossless master.
Is there a file size or batch limit?
There is no fixed size limit because processing happens on your device rather than a server. You can queue and convert many FLAC files in a single batch; the practical limit is your device's available memory.
Do I need to install anything or create an account?
No. The converter is a free web app that requires no sign-up, no installation, and no browser extensions. Open the page, drop in your FLAC files, and download MP3s.

Sources & references