Files, quacked into shape.
63 free converters for audio, video, spreadsheets, data, units and more. No sign-up, no watermark, and everything runs in your browser tab.
Press Ctrl K (or /) on any page to search.
Not sure which converter you need?
Describe the job in plain words and the helper will point you to the right one.
Popular right now
- MP4 to MP3Extract the audio of an MP4 video as an MP3.
- Video to GIFTurn a short video clip into an animated GIF.
- HEIC to JPGiPhone photos to JPG. Lives on iDuckIMG.on iDuckIMG ↗
- CSV to ExcelOpen a CSV file as a proper .xlsx spreadsheet.
- JSON to CSVFlatten a JSON array into CSV you can open in Excel.
- Number to wordsWrite numbers out in words, Indian or international style.
- LengthMetres, feet, inches, miles, kilometres and more.
- Time zone converterCompare a time across cities and zones.
All 63 converters
Pick a group to narrow the list, or press Ctrl K to search.
Audio
- MP3 to WAVTurn MP3 files into WAV in your browser. Nothing is uploaded.
- WAV to MP3Turn WAV files into MP3 in your browser. Nothing is uploaded.
- M4A to MP3Turn M4A files into MP3 in your browser. Nothing is uploaded.
- AAC to MP3Turn AAC files into MP3 in your browser. Nothing is uploaded.
- OGG to MP3Turn OGG files into MP3 in your browser. Nothing is uploaded.
- FLAC to MP3Turn FLAC files into MP3 in your browser. Nothing is uploaded.
- OPUS to MP3Turn OPUS files into MP3 in your browser. Nothing is uploaded.
- MP3 to OGGTurn MP3 files into OGG in your browser. Nothing is uploaded.
- MP3 to M4ATurn MP3 files into M4A in your browser. Nothing is uploaded.
- WAV to FLACTurn WAV files into FLAC in your browser. Nothing is uploaded.
- FLAC to WAVTurn FLAC files into WAV in your browser. Nothing is uploaded.
- M4A to WAVTurn M4A files into WAV in your browser. Nothing is uploaded.
- Video to MP3Pull the sound out of any video as an MP3 file.
- MP4 to MP3Extract the audio of an MP4 video as an MP3.
Video
- MP4 to WEBMConvert MP4 videos to WEBM without uploading them anywhere.
- WEBM to MP4Convert WEBM videos to MP4 without uploading them anywhere.
- MOV to MP4Convert MOV videos to MP4 without uploading them anywhere.
- MKV to MP4Convert MKV videos to MP4 without uploading them anywhere.
- AVI to MP4Convert AVI videos to MP4 without uploading them anywhere.
- MOV to WEBMConvert MOV videos to WEBM without uploading them anywhere.
- MKV to WEBMConvert MKV videos to WEBM without uploading them anywhere.
- AVI to WEBMConvert AVI videos to WEBM without uploading them anywhere.
- Video to GIFTurn a short video clip into an animated GIF.
- GIF to MP4Turn a GIF into a much smaller MP4 video.
- Compress videoMake a video file smaller so it is easier to send.
- Trim videoCut a video down to the part you want.
Images
- HEIC to JPGiPhone photos to JPG. Lives on iDuckIMG.on iDuckIMG ↗
- AVIF to JPGAVIF pictures to JPG. Lives on iDuckIMG.on iDuckIMG ↗
- AVIF to PNGAVIF pictures to PNG. Lives on iDuckIMG.on iDuckIMG ↗
- SVG to PNGSVG drawings to PNG. Lives on iDuckIMG.on iDuckIMG ↗
- BMP to JPGBMP pictures to JPG. Lives on iDuckIMG.on iDuckIMG ↗
- PNG to ICO (favicon)Make a favicon from a PNG. Lives on iDuckIMG.on iDuckIMG ↗
- TIFF to JPGTurn TIFF scans and photos into ordinary JPG files.
- WEBP to GIFTurn WEBP pictures into GIF.
Data & documents
- CSV to ExcelOpen a CSV file as a proper .xlsx spreadsheet.
- Excel to CSVSave an Excel sheet as plain CSV.
- CSV to JSONTurn CSV rows into a JSON array.
- JSON to CSVFlatten a JSON array into CSV you can open in Excel.
- JSON to XMLTurn JSON into XML with one click.
- XML to JSONTurn XML into JSON.
- YAML to JSONTurn YAML config into JSON.
- JSON to YAMLTurn JSON into readable YAML.
- Markdown to HTMLTurn Markdown text into HTML.
- HTML to MarkdownTurn HTML into clean Markdown.
- TXT encoding fixerFix garbled text and save it as UTF-8.
Units
- LengthMetres, feet, inches, miles, kilometres and more.
- WeightKilograms, pounds, ounces, grams, tonnes and more.
- TemperatureCelsius, Fahrenheit and Kelvin.
- AreaSquare metres, square feet, acres, hectares and more.
- VolumeLitres, millilitres, gallons, cups and more.
- SpeedKm/h, mph, metres per second, knots.
- Time unitsSeconds, minutes, hours, days, weeks and years.
- Data sizeBytes, KB, MB, GB, TB, with the 1000 and 1024 rules explained.
- PressurePascal, bar, psi, atmospheres and more.
- EnergyJoules, calories, kilowatt-hours and more.
- Indian land unitsBigha, gaj, acre, hectare and square feet, with a state note.
Numbers & text
New and next
- Turkish languageThe whole site in Turkish, with a language switch.
- Animated WEBP to GIFKeep every frame, not just the first.
- Currency converterOnly if we can find a free, trustworthy rate source and show when it was updated.
Your files stay with you
Every converter runs in your browser. Your files are not uploaded to our servers.
No sign-up, no watermark, no ads
Open a converter and use it. Nothing to install, and nothing stamped on your results.
Made for phones too
Pick a file from your gallery or files and every converter works at phone size.
How-to guides
Short walkthroughs for the jobs people search for most. Each gives the answer first.
- How to extract audio from a videoSave the sound of any video as an MP3 in your browser, with no upload, no software to install and no watermark.
- HEIC vs JPG: which should you use?What HEIC is, how it differs from JPG, why iPhone photos will not open elsewhere, and how to convert them.
- How to open a CSV in Excel correctlyStop Excel dropping leading zeros, mangling long numbers and breaking accents when you open a CSV file.
- How to convert units without mistakesThe traps that cause wrong answers when you convert units: US and UK gallons, 1000 vs 1024, tonnes, temperature and Indian land units.
Common questions
What is iDuckConvert?
A free set of converters: audio, video, spreadsheets and data files, units, numbers, text and time zones. Everything runs in your browser.
Is iDuckConvert free?
Yes. There is no sign-up, no watermark and no ads. If you want to help, tips are the only way to support it.
Are my files uploaded to a server?
No. Every converter runs in your browser tab, so your files stay on your device. The audio and video engine (ffmpeg) is downloaded once from a public CDN, but your files are not part of that.
Why are video conversions slow on my phone?
Your own device does the work, not a server. A computer is many times faster than a phone, so use one for big videos. We suggest files under 500 MB on a computer and 100 MB on a phone.
Where are the PDF and image converters?
PDF conversions live on iDuckPDF and picture tools such as HEIC to JPG live on iDuckIMG. We link to them instead of copying them, so each tool has one good home.
Keep the pond clean
iDuckConvert has no ads and no paywall. Tips are the only way it pays for itself.