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Converters8 file families · 44 direct conversions
What changes in a conversionarrow_forward
image57 formats
Image Converterarrow_forwardPhotos, screenshots, icons and graphics. Change format, cut size for the web, or rescue iPhone HEIC photos.
swap_horizPopularall 7
HEIC → JPGAVIF → JPGBMP → JPG
movie30 formats
Video Converterarrow_forwardScreen recordings, phone clips and exports. Re-wrap or re-encode for any player, or pull audio and GIFs out.
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Video → GIFAVI → MP4GIF → MP4
graphic_eq42 formats
Audio Converterarrow_forwardVoice memos, podcasts and music. Go lossless for editing or compact for sharing, without touching quality twice.
swap_horizPopularall 7
AAC → MP3FLAC → M4AFLAC → MP3
description28 formats
Document Converterarrow_forwardContracts, spreadsheets and reports. Make PDFs editable, lock Word files into PDFs, or pull clean data out of tables.
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Image → PDFPDF → JPGPresentation Converter
menu_book11 formats
Ebook Converterarrow_forwardBooks and long reads. Move titles between Kindle, Kobo and Apple Books, or read them right here in the browser.
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folder_zip16 formats
Archive Converterarrow_forwardBundles of files. Open RAR and 7Z without installing anything, or repack into ZIP so anyone can open it.
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RAR → ZIP7Z → ZIPTAR.GZ → ZIP
font_download8 formats
Font Converterarrow_forwardTypefaces for design and the web. Turn desktop fonts into fast WOFF2 for sites, or back into TTF for apps.
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TTF → WOFF2OTF → TTFWOFF2 → TTF
slideshow10 formats
Presentation Converterarrow_forwardDecks from PowerPoint, Keynote and Google Slides. Swap between them or flatten into a PDF anyone can open.
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PPTX → PDFKEY → PPTXPPT → PPTX
Compressors8 file types · same format, smaller fileAlso:GIF Compressor·SVG Optimizer
How compression worksarrow_forward
imagearrow_forward
Image CompressorHit a KB target with measured SSIM
targetKB target or quality
JPGPNGWebPGIF
moviearrow_forward
Video CompressorFit a size limit with corrective passes
targetMB limit or preset
MP4MOVMKVAVI
graphic_eqarrow_forward
Audio CompressorBitrate against the measured cut-off
target32-320 kbps
MP3WAVFLACAAC
descriptionarrow_forward
Document CompressorResample scans, recompress streams
targetImage dpi
PDFDOCXODT
co_presentarrow_forward
Presentation CompressorShrink the photos and media inside slides
targetImage size in slides
PPTXPPTODP
menu_bookarrow_forward
Ebook CompressorSmaller EPUBs without losing chapters
targetImage quality
EPUBMOBIAZW3
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Archive CompressorPack files at the best ratio
targetMethod and level
ZIP7ZTARGZ
text_fieldsarrow_forward
Font CompressorWeb-ready fonts for fast loading
targetOutput and subset
TTFOTFWOFFWOFF2
Tool hubs9 hubs · every tool, grouped, with an inspector on each
imageImage toolsEdit, crop, resize, redact and inspect photoscodec bake-offarrow_forwardmovieVideo toolsTrim, edit, compress and turn clips into GIFscontainer inspectorarrow_forwardgraphic_eqAudio toolsClip, join, record, mix and measure loudnessLUFS meterarrow_forwardpicture_as_pdfPDF toolsMerge, split, sign, protect and watermark PDFsstructure inspectorarrow_forwarddescriptionDocument toolsWord, Excel and CSV files, read down to the XMLhidden-data checkarrow_forwardmenu_bookEbook toolsEPUB, MOBI and comics checked and convertedreflow labarrow_forwardfolder_zipArchive toolsOpen, check and rebuild ZIP, TAR and 7Z safelysafety inspectorarrow_forwarddata_objectDeveloper toolsJSON, Base64, regex, hashes, JWT, colour and DNS20+ toolsarrow_forwardcalculateCalculatorsInterest, loans, VAT, dates, percentages and paceexact mathsarrow_forward
REFERENCEdictionaryFormats explainedWhat each format is forarrow_forwardschoolCore conceptsCodecs, containers, compressionarrow_forwardmemoryHow processing worksWhat happens to your filearrow_forward
GUIDESchecklistHow-to guidesStep-by-step walkthroughsarrow_forwarddevicesPlatform guidesTips for iPhone, Windows, Macarrow_forwardcompareComparisonsTwo formats measured side by sidearrow_forward
newspaperBlogNews, release notes and deep divesarrow_forward
lightbulbpopular comparisonJPG vs PNG: which one should this picture be?Measured on real photos, logos and screenshots, with a rule you can apply in a second.Read the comparisonarrow_forward
home/audio/wma-to-mp3

Convert WMA to MP3 Online Free

A 2006 music folder: five kinds of WMA, and a few locked.

Windows Media Player ripped CDs to WMA for a decade, in several flavours. Some were bought from stores with copy protection that can't legally be removed. We scan the folder first so you know what will convert, and what won't, before you start.

filedetectedresult
check_circle01 - Clocks.wmaA Rush of Blood to the Head · 2002 · 64 kbps · 5:07WMA StandardMP3 128
check_circle02 - Mr. Brightside.wmaHot Fuss · 2004 · 96 kbps · 3:42WMA StandardMP3 160
check_circle03 - Hide and Seek.wmaSpeak for Yourself · 2005 · 128 kbps · 4:28WMA StandardMP3 192
check_circle04 - Teardrop (5.1).wmaMezzanine · 1998 · 384 kbps · 5:30WMA ProMP3 256
workspace_premium05 - Wonderwall.wma(What’s the Story) Morning Glory? · 1995 · lossless · 4:18WMA LosslessMP3 320
lock06 - Crazy.wmaSt. Elsewhere · 2006 · 128 kbps · 2:58Protected (DRM)skipped
lock07 - Hips Don’t Lie.wmaOral Fixation Vol. 2 · 2005 · 192 kbps · 3:38Protected (DRM)skipped
check_circleMemo 2007-03-14.wmaVoice Recorder · 20 kbps · 1:34WMA VoiceMP3 64
will convert01 - Clocks.wma
codecWMA Standardsource64 kbpslength5:07MP3128 kbps · 4.9 MB
infoThe common kind. Decoded and re-encoded to MP3. MP3 bitrate set a step above the source, so nothing more is lost.
convert6 fileslocked2 filesMP3 total37 MB
whole folder, by typeWMA Standard×3MP3 128-192WMA Pro×1MP3 256WMA Lossless×1MP3 320WMA Voice×1MP3 64Protected (DRM)×2skipped
library_musicConvert 6 files · skip 2 locked

Open songs, voice memos or old archives and save them as MP3, AAC, FLAC, Opus, WMA, AC3, AMR or any of 19 more. Pick a quality preset or an exact bitrate, convert the whole batch in one pass, then download each file or one ZIP.

music_noteTry a sample track
lockFiles stay on your devicelibrary_music26 output formatsstacksBatch convert, one ZIPtunePresets or an exact bitrate
Your files1 file · 2.12 MB
upload_fileDrop audio files hereMP3, WAV, FLAC, M4A, OGG, OPUS, WMA, AIFF, AMR, AC3 and more. Add as many as you like; they convert one after another.
WAVharbour-lights.wav12.0 s · 2.12 MBdownloadwaitingclose
swap_horizConvert 1 file to .mp3folder_zip
The engine could not load: could not fetch http://127.0.0.1:9777/js/lib/ffmpeg.min.js
1Save as26 formats
.mp3.m4a.wav.flac.opus
searchAll 26 formatsexpand_more
search
. ·
.mp3MP3
MPEG-1 Audio Layer III, the universal standard. Best for music, podcasts and sharing.
Containermp3Encoderlibmp3lameMIME typeaudio/mpegFirst bytes49 44 33 or FF FBHerechecked when the engine loads
2Qualitylossy · smaller
Low96 kbps · 44.1 kHz · mono
Medium128 kbps · 44.1 kHz · stereo
High192 kbps · 48 kHz · stereo
Ultra320 kbps · 48 kHz · stereo
Customset it yourself
Bitrate
Bit depth
Sample rate
Channels
infoEach preset sets bitrate, sample rate and channels together. MP3 at 192 kbps is the usual choice for music.
3What you’ll get≈ 288 KB in total
harbour-lights.wav2.12 MB≈ 288 KB
The exact command each file goes throughffmpeg -i harbour-lights.wav -vn -map_metadata 0 -ar 48000 -ac 2 -c:a libmp3lame -b:a 192k -f mp3 harbour-lights.mp3
swap_horizConvert 1 file to .mp3
~/cd-quality-at-64

"CD quality at 64 kbps" was a sales pitch.

Microsoft advertised WMA as matching a 128 kbps MP3 at half the size, and Media Player defaulted to low bitrates. Many old rips are 64-96 kbps. Converting can't restore what was dropped, but a slightly higher MP3 bitrate stops a second round of loss. Pick your rips' bitrate.

64 kbps96 kbps128 kbps160 kbps
your WMA
ceiling · 70 / 100
MP3 96
68 / 100
MP3 128
recommended
MP3 160
69 / 100
MP3 192
wasted space
MP3 256
wasted space
MP3 320
wasted space
Your WMA scores about 70 / 100 to begin with; no MP3 can beat that. MP3 128 kbps lands at 69. A good balance of size and fidelity.
~/keeping-the-library-tidy

WMA tags have different names. We translate them.

Media Player stored artist, album and ratings in its own fields. A careless converter drops the ones it doesn't recognise, and albums split apart or lose their covers. This is how each field is carried into the MP3.

WMA fieldMP3 (ID3v2.4)example
Title / Authorarrow_forwardTIT2 / TPE1Clocks · Coldplay
WM/AlbumTitlearrow_forwardTALBA Rush of Blood to the Head
WM/AlbumArtistarrow_forwardTPE2Keeps compilations in one album
WM/TrackNumberarrow_forwardTRCK1 / 11
WM/Picturearrow_forwardAPIC (cover)Embedded art copied; folder.jpg also used if present
WM/SharedUserRatingchange_circlePOPM (rating)4 stars → 196 of 255; many players ignore it
WM/MediaClassPrimaryIDblock-Media Player’s internal category; dropped
~/protected-wma

We don't convert locked files. Here's what you can do instead.

Tracks from MSN Music, Napster and early subscription stores carry DRM. Removing it breaks the licence terms, and in many countries the law. Most of that music is now easy to get again, legally, without locks.

storefrontCheck your old store accountSome services let you re-download purchases DRM-free, or offered free upgrades when they dropped DRM.
albumRip the CD againIf you own the disc, rip it straight to MP3 or FLAC. A fresh rip is also better quality than a 2006 WMA.
library_musicBuy or stream it againMost of that catalogue is now sold as unprotected MP3 or AAC, often for less than it cost then.
~/other-routes

Rescuing the rest of an old library.

Neighbouring tools, with a typical result for each.

graphic_eqWAV to FLACFor WMA Lossless tracks: keep them lossless in a modern format.Wonderwall.wma · 27 MBarrow_forward.flac · 26 MBmusic_noteM4A to MP3Old iTunes purchases from the same era, without DRM.song.m4aarrow_forwardsong.mp3movieAVI to MP4Home videos from the same drive, in a format that plays today.party-2006.aviarrow_forward.mp4
Sources
[1]Windows Media AudioThe codec family: Standard, Pro, Lossless and Voice.Wikipedia ↗[2]ASF attribute listThe WM/ tag fields Media Player writes.Microsoft Learn ↗[3]ID3v2.4 framesWhere MP3 stores the same information.id3.org ↗

Frequently Asked Questions

Is converting WMA to MP3 free?

Yes, WMA to MP3 conversion is completely free with no signup, no watermark, and no usage limit. Convert as many files as you need.

Are my files uploaded to a server?

No. The WMA to MP3 converter runs in your browser when your file is supported there, so the file stays on your device for that workflow, reducing server exposure for that workflow. If the file is sensitive, check the processing mode first.

How long does WMA to MP3 conversion take?

Most WMA to MP3 conversions finish in under a minute. Bigger files take longer, in proportion to their size. There is no queue to join and no account to make first.

Will the conversion reduce file quality?

Depends on what you are converting between. Go lossless to lossless and the picture or the audio comes out untouched. Go to a lossy format and you give up a little to get a smaller file.

Does this work on mobile devices?

Yes. The WMA to MP3 converter works on phones, tablets, and desktops in any modern browser including Chrome, Safari, Firefox, and Edge.