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Converters · Windows 10 and 11

Converters: any file to another format

Every “this format to that one” in one window: documents, spreadsheets and slides with the office editors' own readers, pictures drawn by the app, video and sound through FFmpeg. Drop files or folders in, pick the format, convert, and save the results one by one or as a ZIP. Nothing is uploaded.

Updated

Every conversion

Video converterConvert videos to MP4, MKV, MOV, WebM, AVI and 29 more formats, in batches. Video to MP3Save the sound of any video as MP3, WAV, M4A or 12 more formats, folders at once. MP4 converterAny video to an MP4 that plays everywhere, copied without loss when it fits. MP4 to MP3Keep the sound of your MP4s as MP3s: talks, lectures, songs, whole folders. MP4 to WAVA video's sound as uncompressed WAV, for editors, samplers and speech software. MP4 to M4ALift the AAC sound out of an MP4 into an M4A, copied as it is, with no loss. MOV to MP3The sound of iPhone videos and other MOV files as MP3, on a Windows PC. MKV to MP3The sound of MKV files as stereo MP3s, surround tracks mixed down for you. WebM to MP3The sound of browser and screen recordings saved as WebM, as MP3s. GIF to MP4Heavy GIFs into light MP4 videos that load fast and play everywhere. MP4 to GIFMP4 clips into looping GIF, WebP or APNG animations, with ready presets. MOV to GIFiPhone clips and Live Photo videos into GIFs that loop in any chat. WebM to GIFScreen recordings saved as WebM into GIFs for bug reports, docs and chat. MP4 to WebMWebM versions of your MP4s for web pages, in VP9 or AV1 with Opus sound. MP4 to AVIXvid AVIs with MP3 sound for DivX DVD players, older TVs and old software. MP4 to MOVMP4s into MOVs for Mac editing, copied as they are or made into ProRes. MP4 to MKVMP4s into Matroska files with no re-encoding: same picture, every track. MP4 to WMVWindows Media files for PowerPoint 2010, Movie Maker and older PCs. MOV to MP4iPhone and camera MOV clips as MP4 files, usually copied with nothing lost. MKV to MP4Films and recordings from MKV to MP4, every sound track kept, mostly copied. WebM to MP4Browser and screen recordings from WebM to an MP4 that plays everywhere. AVI to MP4Old DivX, Xvid and camera AVI files as MP4s for today's phones and TVs. WMV to MP4Windows Media videos from Movie Maker and PowerPoint, remade as MP4. FLV to MP4Flash video files from old sites, streams and recorders, rescued as MP4. MPEG to MP4MPG and MPEG files from DVD recorders, Video CDs and camcorders, as MP4. VOB to MP4The VOB files of a home-made DVD, turned into MP4s you can play anywhere. TS to MP4TV tuner recordings and stream captures from .ts to MP4, often copied. MTS to MP4AVCHD camcorder clips and M2TS files as MP4s, usually copied as they are. 3GP to MP4Videos from old Nokia, Samsung and Sony Ericsson phones, saved as MP4. M4V to MP4Your own M4V videos turned into plain MP4 files, usually without re-encoding. MXF to MP4Pro camera MXF footage turned into light MP4 copies for review and sharing. HEVC to MP4H.265 videos from phones and cameras, re-encoded as H.264 that plays on any PC. MP3 to WAVUncompressed WAV copies of your MP3s, for editors, samplers and CDs. Audio converterChange sound files between 15 formats, one file or whole folders at a time. MP3 converterTurn your own sound and video files into MP3s at 128 to 320 kbps, folders at a time. WAV converterMake WAV files from any sound or video: 16-bit, 24-bit or 32-bit float, mono or stereo. WAV to MP3Shrink big WAV recordings and mixes into MP3s that play on anything. M4A to MP3Voice Memos and iTunes songs as MP3s, for cars, old players and picky forms. FLAC to MP3Copies of a lossless library for phones and cars, with covers and tags kept. OGG to MP3OGG sound from games, apps and voice messages, as MP3s any player opens. WMA to MP3Old Windows Media Player rips as MP3s, with titles, artists and albums kept. AAC to MP3Bare .aac files, and .m4a too, as MP3s that every player and form accepts. OPUS to MP3WhatsApp and Telegram voice notes as MP3s, converted privately on your PC. AIFF to MP3Mac-made AIFF recordings and bounces as compact MP3s, a folder at a time. AMR to MP3Voice memos and call recordings from older phones, as MP3s that play today. M4B to MP3Audiobooks without copy protection as MP3, for players that don't know M4B. CAF to MP3Apple Core Audio files from GarageBand, Logic and iPhone apps, as MP3s. WAV to FLACLossless archives of your WAVs at about half the size, bit depth kept. FLAC to WAVThe exact sound of your FLACs as WAV, for editors, samplers and CD burning. M4A to WAVVoice Memos and iTunes songs as WAV, for editors, transcription and DJ tools. OGG to WAVGame sounds, effects and voice clips in OGG, unpacked to WAV for any editor. MP3 to OGGMP3s turned into Ogg Vorbis or Opus for games, mods, bots and web apps. MP3 to M4AMP3s as AAC M4A files for Apple apps and anything else that asks for M4A. MP3 to FLACMP3s as FLAC when a program or upload demands it. No quality gained, none lost. MP3 to AACMP3s as AAC, in a bare .aac file or an .m4a, with the difference explained. WAV to M4AWAVs as small AAC M4As, or as Apple Lossless with every bit kept. FLAC to ALACFLAC music as Apple Lossless for iTunes, Apple Music and iPhone, art and all. Image converterTurn pictures into JPG, PNG or WebP, one or a whole set, on your own PC. SVG to PNGTurn SVG logos and icons into crisp PNGs at any width, transparency kept. SVG to JPGTurn SVG graphics into JPGs on a white background, at any width, on your PC. JPG to PDFTurn photos and scans into one PDF, each picture a page of its own. PNG to PDFScreenshots and graphics into a PDF, lossless and with crisp text. PDF to JPGEvery page of a PDF as a JPG, PNG or WebP picture, at the sharpness you choose. Document converterWord, PDF, Markdown, web pages and text, from any of them to any other. Word to PDFTurn .docx files into PDFs that look the same everywhere, many at a time. PDF to WordGet the words of a PDF back as an editable .docx, paragraphs and headings in order. Markdown to HTMLTurn .md files into clean web pages, or into Word files and PDFs, in batches. Excel to PDFEvery sheet of a workbook as a PDF, or Excel, CSV and TSV from one to another. PowerPoint to PDFPowerPoint decks as PDFs, or one PNG or JPG picture per slide at any width.

What is in it

How every converter works

Each one is the same shape: drop files or whole folders onto the window, or press the button to choose them; pick the format and any settings, which apply to everything in the list; press Convert, which names the count and the format. Each row shows its progress and then its result, with a Save button of its own; when several are done, Save all as ZIP gathers them. A file that cannot be read is marked with the reason and the rest carry on. The originals are never changed.

The office and picture converters read and write with the same code as Octoolo's editors, so a file converted here is what the editor would have saved. Video and sound go through FFmpeg, which Octoolo downloads once (77 MB) the first time a media tool needs it. PDFs are written by the app itself, which is why the conversions that produce a PDF run in the installed app.

Why convert on your own PC

Online converters take your file to a server, keep it for a while, cap the size on free plans and often watermark the result. Here a contract, a scan of your passport, a client's deck or a day of interview footage never leaves the computer, there is no size limit beyond your disk, and a folder of two hundred files is no harder than one. It works on a plane, and it keeps working when the website would have gone away.

Questions, answered

Is anything uploaded?

No. Every converter runs on your computer. The only download is FFmpeg, once, for video and sound.

Can I convert a whole folder?

Yes. The video and sound converters take folders and look three levels into them; for the others, select every file in the folder and drop them in together.

Which conversions need the installed app?

The ones that write a PDF: Word to PDF, Excel to PDF, PowerPoint to PDF and the document converter's PDF output. Everything else also runs in the browser version.

Does HEIC work?

Not yet. HEIC to JPG is listed as coming.

Where do the results go?

Where you choose: each Save opens the Windows Save dialog, and Save all as ZIP writes one archive. The video and sound converters save next to the originals or in a folder you pick.

The Converters, and 16 more apps.

Download for Windows

7 days free, then from $3.99 a month for all 17 apps. Windows 10 and 11.