Tools

FLAC to MP3

Drop FLAC files to convert to MP3Add FLAC files to convert to MP3

FLAC albums and tracks as MP3, on your device.

or paste with CtrlV FLAC

Your files never leave your device

About this tool

Make FLAC albums small enough for any player

This tool converts FLAC files to MP3 right in your browser. Choose 320 kbps for the least loss, 192 for a good size, or 128 for the smallest. In Chrome, Edge and Firefox title, artist, album and cover art are kept; hi-res files are brought to a rate MP3 has; your music never leaves your device.

What you give up, and how to give up less

FLAC keeps every detail of the recording; MP3 leaves out what the ear is least likely to miss. That is how the file gets small, and it can’t be undone, so keep your FLAC files and treat the MP3s as copies for the phone, the car and the player that can’t open FLAC.

Best (320 kbps) loses the least, High (192 kbps) is hard to tell from the original for most listeners, and Standard (128 kbps) is the smallest. Our 4-minute test track was 13.7 MB as FLAC and 9.6 MB, 5.8 MB and 3.8 MB as MP3.

Hi-res files: 24-bit, 96 kHz and more

24-bit FLAC is read as it is. MP3 stops at 48 kHz, so a file at 96 kHz or 192 kHz is brought down to 48 kHz, and one at 88.2 kHz or 176.4 kHz to 44.1 kHz. That loses nothing a person can hear: MP3 keeps next to nothing above 20 kHz anyway.

The step down uses straight-line interpolation between samples, simpler than the filters a studio tool uses. For music it is fine; if you are picky about the very top of the range, the MP3 is not the format for it anyway.

Tags, cover art and speed

In Chrome, Edge and Firefox, the tags in a FLAC file, title, artist, album and its cover picture, come along into the MP3 where there are some, so your library sorts the new files as it sorts the old.

A 4-minute FLAC song becomes an MP3 in about 1 second on a recent laptop.

FLAC in Safari

In WebKit, Safari’s engine, FLAC decoding failed on every file we tried, so there ToolHero asks the browser to decode the whole file at once. That holds all of it in memory, so it works for up to 10 minutes of sound at a time and says so when a file is longer, and the tags of a file decoded that way are not kept. Chrome, Edge and Firefox decode FLAC a piece at a time, so no length limit of ours applies there.

How it works

  1. Add your FLAC files

    Drop tracks or a whole album here, or choose them. Each one shows its length.

  2. Choose a quality

    Best (320 kbps) for the least loss, High (192) as a good size, Standard (128) for the smallest.

  3. Convert and save

    Press Convert, then save the MP3s as a .zip, or one by one.

Questions, answered

Which quality should I pick for FLAC?

Best (320 kbps) if you want the least loss, High (192 kbps) for a good balance, Standard (128 kbps) when size matters most. Keep the FLAC files either way.

Does it handle 24-bit and 96 kHz FLAC?

Yes. 24-bit is read as it is; 96 kHz is brought to 48 kHz and 88.2 kHz to 44.1 kHz, the nearest rates MP3 has.

Will the cover art and tags stay?

Yes, where the FLAC has them, except in Safari, where the browser decodes the file itself and the tags are not kept.

Can I convert a whole album at once?

Yes. Add every track, press Convert once, and save the MP3s together as a .zip. Each file keeps its own name.

More MP3 conversions

Everything happens on your device, so your files never leave your computer or phone.

Hard to tell from the original for most music. A good size for sharing. about 1.4 MB a minute.MP3 · 192 kbps

MP3 · 192 kbps
FLAC to MP3 settings

Quality

Hard to tell from the original for most music. A good size for sharing. 192 kbps for stereo, about 1.4 MB a minute. Mono sound uses half.

Output

MP3, with the same title, artist and cover as the original where it has them. MP3 encoding by LAME, a free encoder under the LGPL. Licences

Add files to convert them