Convert flv to mp3
Converted on your device. Files never leave this tab. Output tops out around 2 GB.
Nothing is uploaded
The converter runs inside this page. Cut your network after it loads and it still works.
No account, no daily limit
No sign-up, no daily limit, no watermark, no queue behind other people's files. Batch as many FLV files as you like.
Real MP3 output
Encoded by ffmpeg, the same library the command-line tools use — not a renamed extension.
About FLV
Flash Video
Adobe's container for Flash Player, which carried most web video in the late 2000s, usually with Sorenson Spark, VP6 or H.264 video. Flash Player was discontinued at the end of 2020. Convert FLV to MP4 to play saved Flash-era video now that Flash is gone.
About MP3
MPEG-1 Audio Layer III
A lossy audio format developed largely at the Fraunhofer Institute and standardized as part of MPEG-1 in 1993. Its patents expired in 2017, and typical bitrates run from 128 to 320 kbps. Use it when audio has to play everywhere: car stereos, old MP3 players, any phone or browser.