MP3 to AAC converter
Re-encode MP3 audio as AAC locally. A modern codec, smaller files, Apple-friendly output.
File converter
0 files
Every file. A new possibility.
Images, audio, documents and video. Pick your files and give them a new format.
or drop your files hereSupported formats
Images
.png, .jpeg, .jpg, .webp, .gif, .svg, .jxl, .avif, .heic*, .heif*, .ico, .bmp, .cur, .ani*, .icns*, .nef*, .cr2*, .hdr, .jpe, .mat, .pbm, .pfm, .pgm, .pnm, .ppm, .tiff, .jfif, .eps*, .psd, .arw*, .tif, .dng*, .xcf*, .rw2*, .raf*, .orf*, .pef*, .mos*, .raw*, .dcr*, .crw*, .cr3*, .3fr*, .erf*, .mrw*, .mef*, .nrw*, .srw*, .sr2*, .srf*, .a*, .aai, .ai*, .art*, .avs, .b*, .bgr*, .bgra*, .bgro*, .bmp2, .bmp3, .brf*, .cal*, .cals*, .cin, .cip*, .cmyk*, .cmyka*, .dcx, .dds, .dpx, .dxt1, .dxt5, .epdf*, .epi*, .eps2*, .eps3*, .epsf*, .epsi*, .ept*, .ept2*, .ept3*, .exr, .farbfeld, .fax, .ff, .fit, .fits, .fl32, .fts, .ftxt*, .g*, .g3, .g4*, .gif87, .gray*, .graya*, .group4*, .hrz, .icb, .icon, .info*, .ipl, .isobrl*, .isobrl6*, .j2c, .j2k, .jng, .jp2, .jpc, .jpm, .jps, .map*, .miff, .mng, .mono*, .mtv, .o*, .otb, .pal*, .palm, .pam, .pcd, .pcds, .pcl*, .pct, .pcx, .pdb, .pgx, .phm, .picon, .pict, .pjpeg, .png00, .png24, .png32, .png48, .png64, .png8, .ps*, .ps1*, .ps2*, .ps3*, .psb, .ptif, .qoi, .r*, .ras, .rgb*, .rgba*, .rgbo*, .rgf, .sgi, .six, .sixel, .sparse-color*, .strimg*, .sun, .svgz*, .tga, .tiff64, .ubrl*, .ubrl6*, .uil*, .uyvy*, .vda, .vicar, .viff, .vips, .vst, .wbmp, .wpg, .xbm, .xpm, .xv, .ycbcr*, .ycbcra*, .yuv*
Audio
.mp3, .wav, .flac, .ogg, .mogg*, .oga, .opus, .aac, .alac, .m4a, .caf*, .wma, .amr, .ac3, .aiff, .aifc, .aif, .mp1*, .mp2, .mpc*, .dsd*, .dsf*, .dff*, .mqa*, .au, .m4b, .voc, .weba, .mkv*, .mp4*, .avi*, .mov*, .webm*, .ts*, .mts*, .m2ts*, .wmv*, .mpg*, .mpeg*, .flv*, .f4v*, .vob*, .m4v*, .3gp*, .3g2*, .mxf*, .ogv*, .rm*, .rmvb*, .divx*
Documents
.docx, .doc, .md, .html, .rtf, .csv, .tsv, .json, .rst, .epub, .odt, .docbook
PDF → images
.pdf*, .png*, .jpeg*, .jpg*, .webp*, .avif*, .jxl*, .gif*, .bmp*, .tiff*, .tif*, .ico*, .jp2*, .psd*, .qoi*, .tga*, .ppm*, .pgm*, .pbm*, .pnm*, .pcx*, .dds*, .exr*, .hdr*
Formats marked * support import or export only.
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How to use this tool
- Choose files or drag them into the workspace. Matching inputs get the output format shown on this page.
- Check the output format and image quality for each file. Existing files in your queue keep their settings.
- Start the conversion, then download individual results or the completed batch. Your original files are unchanged.
Quality and format notes
AAC usually reaches the same audibility as MP3 at lower bitrates and is the default audio codec on Apple platforms and in many cameras. Converting cannot restore MP3 losses, but it can stop the size penalty from compounding.
If your sources still exist as lossless files, encode AAC from those directly. Bare .aac output plays in most current software; a few old devices want MP3.
Frequently asked questions
Is AAC better than MP3?
In efficiency, yes — comparable quality at lower bitrates. Compatibility is slightly narrower on very old hardware. Choose based on where you play your files.
Why convert at all if MP3 works?
Ecosystems that prefer AAC — iPhones, modern cameras, some streaming workflows — handle it natively, and smaller files add up across a library.
Do tags and artwork survive?
Some metadata may not carry between formats. Convert one file and check its tags in your player before batch processing a library.