MP3FLAC
FREE AUDIO CONVERTERConvert MP3 to FLAC Online Free
Convert MP3 audio to FLAC to archive in a lossless container. Batch convert many files at once, entirely in your browser.
Drop your MP3 files here
MP3 files, multiple files supported
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Features
Why use our MP3 to FLAC Converter?
Why FLAC
FLAC is lossless compression: the audio is bit-for-bit identical to the source at roughly half the size of WAV.
Batch Convert Multiple Files
Drop in as many MP3 files as you need and convert them all to FLAC in one pass, each with its own download.
Quality Encoding
Lossless FLAC keeps every bit of the decoded audio.
100% Private
Your files never leave your device. Every conversion runs locally in your browser, so nothing is uploaded, stored, or seen by anyone.
Works on Any Device
Runs in any modern browser on Mac, Windows, Linux, Android, and iOS.
No Sign-up Required
Open the page and start converting. No account, no email, no install, no watermark.
FAQ
Frequently asked questions
How do I convert MP3 to FLAC?
Drop your MP3 files onto the page and click Convert. Each file is re-encoded to FLAC in your browser and gets its own Download button.
Is my audio uploaded to a server?
No. Conversion runs entirely in your browser with a WebAssembly build of FFmpeg, so your files never leave your device.
Why convert MP3 to FLAC?
FLAC is lossless compression: the audio is bit-for-bit identical to the source at roughly half the size of WAV.
Will I lose audio quality?
FLAC is lossless, so nothing is lost from the decoded audio. If the source was a lossy format like MP3, the result is as good as that source.
Can I convert several MP3 files at once?
Yes. Drop in as many as you like and they all convert in one pass, each with its own download.
Is this converter free?
Yes. It is free to use with no sign-up, no account, and no watermark on your files.
All converters
Every converter, in one place.
63 converters. All run in your browser: no sign-up, no uploads, nothing stored.
Image Converters (17)
View allPNG to JPG ConverterConvert PNG images to JPG for smaller files and universal compatibility. Batch convert and download as a ZIP, entirely in your browser.JPG to PNG ConverterConvert JPG images to PNG with lossless output and transparency support. Batch convert and download as a ZIP, entirely in your browser.WebP to JPG ConverterConvert WebP images to JPG so they open in every app and email client. Batch convert and download as a ZIP, entirely in your browser.WebP to PNG ConverterConvert WebP images to PNG with full transparency preserved. Batch convert and download as a ZIP, entirely in your browser.PNG to WebP ConverterConvert PNG images to WebP for much smaller files on the web. Batch convert and download as a ZIP, entirely in your browser.JPG to WebP ConverterConvert JPG images to WebP for faster loading web pages. Batch convert and download as a ZIP, entirely in your browser.GIF to PNG ConverterConvert GIF images to PNG to grab a still frame as a lossless image. Batch convert and download as a ZIP, entirely in your browser.GIF to JPG ConverterConvert GIF images to JPG to get a compact still image. Batch convert and download as a ZIP, entirely in your browser.BMP to PNG ConverterConvert bitmap images to PNG to shrink huge bitmaps without losing a pixel. Batch convert and download as a ZIP, entirely in your browser.BMP to JPG ConverterConvert bitmap images to JPG for small, shareable photos. Batch convert and download as a ZIP, entirely in your browser.SVG to PNG ConverterConvert SVG vector images to PNG to rasterise vector graphics with transparency. Batch convert and download as a ZIP, entirely in your browser.SVG to JPG ConverterConvert SVG vector images to JPG to get a flat raster image for any app. Batch convert and download as a ZIP, entirely in your browser.AVIF to JPG ConverterConvert AVIF images to JPG for compatibility with every device and app. Batch convert and download as a ZIP, entirely in your browser.AVIF to PNG ConverterConvert AVIF images to PNG with lossless output. Batch convert and download as a ZIP, entirely in your browser.ICO to PNG ConverterConvert ICO icon images to PNG to extract the icon as a normal transparent image. Batch convert and download as a ZIP, entirely in your browser.HEIC to JPG ConverterConvert iPhone HEIC and HEIF photos to universal JPG images. Convert many at once and download them all as a ZIP, entirely in your browser.HEIC to PNG ConverterConvert iPhone HEIC and HEIF photos to lossless PNG images. Batch convert and download as a ZIP, entirely in your browser.
Video Converters (19)
View allMOV to MP4 ConverterConvert MOV videos to MP4. Uses a fast lossless remux when possible, falls back to H.264/AAC re-encoding, and can compress the file while it is at it.MKV to MP4 ConverterConvert MKV videos to MP4 for playback on phones, TVs, and editors that cannot open MKV. Runs entirely in your browser with FFmpeg.AVI to MP4 ConverterConvert AVI videos to MP4 for modern playback compatibility on any device. Runs entirely in your browser with FFmpeg.WebM to MP4 ConverterConvert WebM videos to MP4 with H.264 and AAC for the widest compatibility. Runs entirely in your browser with FFmpeg.FLV to MP4 ConverterConvert FLV videos to MP4 so old Flash video plays on any modern device. Runs entirely in your browser with FFmpeg.WMV to MP4 ConverterConvert WMV videos to MP4 so Windows Media video plays on Mac, iPhone, and the web. Runs entirely in your browser with FFmpeg.M4V to MP4 ConverterConvert M4V videos to MP4 so iTunes video plays outside the Apple ecosystem. Runs entirely in your browser with FFmpeg.3GP to MP4 ConverterConvert 3GP videos to MP4 to bring old phone recordings up to a modern format. Runs entirely in your browser with FFmpeg.MPG to MP4 ConverterConvert MPG videos to MP4 so MPEG-1 and MPEG-2 video plays anywhere. Runs entirely in your browser with FFmpeg.TS to MP4 ConverterConvert TS videos to MP4 so broadcast transport streams play in any player. Runs entirely in your browser with FFmpeg.GIF to MP4 ConverterConvert GIF videos to MP4 to get a tiny video file that autoplays on social media. Runs entirely in your browser with FFmpeg.MP4 to WebM ConverterConvert MP4 videos to WebM using VP9 video and Opus audio for smaller files that play natively in every modern browser. Runs entirely in your browser with FFmpeg.MOV to WebM ConverterConvert MOV videos to WebM using VP9 video and Opus audio for the open web. Runs entirely in your browser with FFmpeg.MP4 to MOV ConverterConvert MP4 videos to MOV for QuickTime, Final Cut Pro, and iMovie. Runs entirely in your browser with FFmpeg.MP4 to MKV ConverterConvert MP4 videos to MKV to wrap the video in a Matroska container without re-encoding. Runs entirely in your browser with FFmpeg.MP4 to AVI ConverterConvert MP4 videos to AVI for legacy players and older editing software. Runs entirely in your browser with FFmpeg.MP4 to GIF ConverterTurn an MP4 video clip into an animated GIF with adjustable frame rate and size. Runs entirely in your browser.MOV to GIF ConverterTurn a MOV video clip into an animated GIF with adjustable frame rate and size. Runs entirely in your browser.WebM to GIF ConverterTurn a WebM video clip into an animated GIF with adjustable frame rate and size. Runs entirely in your browser.
Audio Converters (18)
View allVideo to MP3 ConverterExtract the audio from any video and save it as an MP3. Works with MP4, MOV, MKV, WebM and AVI, entirely in your browser.MP4 to MP3 ConverterExtract the audio track from an MP4 video and save it as a high quality MP3, entirely in your browser.MOV to MP3 ConverterExtract the audio track from a MOV video and save it as a high quality MP3, entirely in your browser.Audio ConverterConvert audio between MP3, WAV, OGG, M4A, and FLAC. Batch convert many files at once, entirely in your browser.OGG to MP3 ConverterConvert OGG audio to MP3 for playback on any device or player. Batch convert many files at once, entirely in your browser.WAV to MP3 ConverterConvert WAV audio to MP3 to shrink huge uncompressed recordings to a fraction of the size. Batch convert many files at once, entirely in your browser.M4A to MP3 ConverterConvert M4A audio to MP3 so Apple voice memos and iTunes tracks play anywhere. Batch convert many files at once, entirely in your browser.FLAC to MP3 ConverterConvert FLAC audio to MP3 to get compact files that play on every device. Batch convert many files at once, entirely in your browser.AAC to MP3 ConverterConvert AAC audio to MP3 for universal playback compatibility. Batch convert many files at once, entirely in your browser.WMA to MP3 ConverterConvert WMA audio to MP3 so Windows Media audio plays on Mac, iPhone, and Android. Batch convert many files at once, entirely in your browser.OPUS to MP3 ConverterConvert OPUS audio to MP3 so voice messages and web audio play in any player. Batch convert many files at once, entirely in your browser.AIFF to MP3 ConverterConvert AIFF audio to MP3 to compress Mac audio files for sharing. Batch convert many files at once, entirely in your browser.MP3 to WAV ConverterConvert MP3 audio to WAV for editing in any DAW or audio editor. Batch convert many files at once, entirely in your browser.MP3 to OGG ConverterConvert MP3 audio to OGG for open-format web and game audio. Batch convert many files at once, entirely in your browser.MP3 to M4A ConverterConvert MP3 audio to M4A for iPhone, iPad, and Apple Music. Batch convert many files at once, entirely in your browser.WAV to FLAC ConverterConvert WAV audio to FLAC to halve the size of your masters without losing a bit. Batch convert many files at once, entirely in your browser.M4A to WAV ConverterConvert M4A audio to WAV for uncompressed editing. Batch convert many files at once, entirely in your browser.OGG to WAV ConverterConvert OGG audio to WAV for uncompressed editing. Batch convert many files at once, entirely in your browser.
PDF Converters (5)
View allPDF to JPG ConverterConvert every page of a PDF into a high quality JPG image and download them all as a ZIP. Free, private, instant.PDF to PNG ConverterConvert every page of a PDF into a lossless PNG image and download them all as a ZIP. Free, private, instant.JPG to PDF ConverterCombine JPG and JPEG photos into a single PDF. Add many at once, reorder them, pick a page size, and download one document.PNG to PDF ConverterCombine PNG images into a single PDF. Add many at once, reorder them, pick a page size, and download one document.WebP to PDF ConverterCombine WebP images into a single PDF. Add many at once, reorder them, pick a page size, and download one document.
CAD Converters (3)
View allJPG to DXF ConverterTurn JPG, PNG and WebP images into editable DXF vector drawings for AutoCAD, laser cutters and CNC machines. Trace a whole batch at once in your browser.PNG to DXF ConverterTurn PNG images and logos into editable DXF vector drawings for AutoCAD, laser cutters and CNC machines. Trace a whole batch at once in your browser.PDF to DXF ConverterTurn PDF drawings into editable DXF files for AutoCAD, CNC and laser cutting. Real vector geometry is pulled straight out of the page, and scanned drawings can be traced instead.