Free online conversion tools

The conversion-tool.com online tool offers a wide range of free online online conversion utilities such as audio converters, document converters, eBook converters, hash generators, and other tools.

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Online Music to 396Hz converter

Use this tool to convert music to 396hz (Hertz). 396hz music is well known to increase well-being, is often said to sound better, be more harmonic, and have transcendental powers.
Note: You can use the free online Music Frequency Changer if you want to convert your music to non-standard frequencies. If you are logged in you can opt-in to get notified by email once the conversion is finished.

Source file


You can either enter a remote URL (e.g. a location where the source file is located) or a local file from your device. If both, an URL and a local file are selected then one of them is ignored.


Only check this if the link points to a video portal and not directly to an audio or video file. Note: YouTube is not supported.
We support import from many video portals including Vimeo, Dailymotion, SoundCloud, BlipTV, Arte, Ard, 3Sat, Orf.at, Flickr, Instagram, Facebook, Metacafe, MTV, Myspace, MyVideo.de, NBA, NBC, NHL, Rottentomatoes, Sina, Slideshare, Space, Spiegel, Tumblr, Vice, ustream, Vevo, Weibo, Yahoo, ZDF, and others.

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How to convert music to 396 Hertz?

  1. Choose the MP3 file you want to convert.
  2. Change the source frequency (Optional).
  3. Select the audio format (MP3, WAV, M4A) and audio quality (optional).
  4. Click on "Start conversion" to change the frequency to 396hz.
  5. Download your 396hz file.

Options

Target frequency: 396hz


The source and target frequency are both with respect to the standard A4 (usually 440 Hertz). Please use the Audio Frequency Converter app for non-standard frequencies.

Note: You can use the free online Music Frequency Changer if you want to convert your music to non-standard frequencies.

Two different algorithms are provided - a time-based and a frequency-based (FFT). Generally Algorithm 1 yields better results, but depending on the input music also Algorithm 2 can sound better.


Online Music to 285Hz converter

Use this tool to convert music to 285hz (Hertz). 285hz music is well known to increase well-being, is often said to sound better, be more harmonic, and have transcendental powers.
Note: You can use the free online Music Frequency Changer if you want to convert your music to non-standard frequencies. If you are logged in you can opt-in to get notified by email once the conversion is finished.

Source file


You can either enter a remote URL (e.g. a location where the source file is located) or a local file from your device. If both, an URL and a local file are selected then one of them is ignored.


Only check this if the link points to a video portal and not directly to an audio or video file. Note: YouTube is not supported.
We support import from many video portals including Vimeo, Dailymotion, SoundCloud, BlipTV, Arte, Ard, 3Sat, Orf.at, Flickr, Instagram, Facebook, Metacafe, MTV, Myspace, MyVideo.de, NBA, NBC, NHL, Rottentomatoes, Sina, Slideshare, Space, Spiegel, Tumblr, Vice, ustream, Vevo, Weibo, Yahoo, ZDF, and others.

Email notifications

Please login to display email notification settings.

How to convert music to 285 Hertz?

  1. Choose the MP3 file you want to convert.
  2. Change the source frequency (Optional).
  3. Select the audio format (MP3, WAV, M4A) and audio quality (optional).
  4. Click on "Start conversion" to change the frequency to 285hz.
  5. Download your 285hz file.

Options

Target frequency: 285hz


The source and target frequency are both with respect to the standard A4 (usually 440 Hertz). Please use the Audio Frequency Converter app for non-standard frequencies.

Note: You can use the free online Music Frequency Changer if you want to convert your music to non-standard frequencies.

Two different algorithms are provided - a time-based and a frequency-based (FFT). Generally Algorithm 1 yields better results, but depending on the input music also Algorithm 2 can sound better.


Online Music to 174Hz converter

Use this tool to convert music to 174hz (Hertz). 174hz music is well known to increase well-being, is often said to sound better, be more harmonic, and have transcendental powers.
Note: You can use the free online Music Frequency Changer if you want to convert your music to non-standard frequencies. If you are logged in you can opt-in to get notified by email once the conversion is finished.

Source file


You can either enter a remote URL (e.g. a location where the source file is located) or a local file from your device. If both, an URL and a local file are selected then one of them is ignored.


Only check this if the link points to a video portal and not directly to an audio or video file. Note: YouTube is not supported.
We support import from many video portals including Vimeo, Dailymotion, SoundCloud, BlipTV, Arte, Ard, 3Sat, Orf.at, Flickr, Instagram, Facebook, Metacafe, MTV, Myspace, MyVideo.de, NBA, NBC, NHL, Rottentomatoes, Sina, Slideshare, Space, Spiegel, Tumblr, Vice, ustream, Vevo, Weibo, Yahoo, ZDF, and others.

Email notifications

Please login to display email notification settings.

How to convert music to 174 Hertz?

  1. Choose the MP3 file you want to convert.
  2. Change the source frequency (Optional).
  3. Select the audio format (MP3, WAV, M4A) and audio quality (optional).
  4. Click on "Start conversion" to change the frequency to 174hz.
  5. Download your 174hz file.

Options

Target frequency: 174hz


The source and target frequency are both with respect to the standard A4 (usually 440 Hertz). Please use the Audio Frequency Converter app for non-standard frequencies.

Note: You can use the free online Music Frequency Changer if you want to convert your music to non-standard frequencies.

Two different algorithms are provided - a time-based and a frequency-based (FFT). Generally Algorithm 1 yields better results, but depending on the input music also Algorithm 2 can sound better.


Make PDF seachable/OCR PDF

Use this tool for making PDF documents searchable and text selectable. This tool extracts the document's text using OCR (optical character recognition) and saves it as a hidden layer in the pdf. The tool can also be used for cleaning up the document (background removal) and reducing its size by lossless image compression. If you are logged in you can opt-in to get notified by email once the conversion is finished.

Source file


You can either enter a remote URL (e.g. a location where the source file is located) or a local file from your device. If both, an URL and a local file are selected then one of them is ignored.

Email notifications

Please login to display email notification settings.

How to search a PDF?

  1. Select the PDF in which you want to search words or phrases in.
  2. Click on "Start conversion" to extract the text in your PDF.
  3. Download your PDF file.

Advanced options

The advanced PDF options allow modification of output format specific parameters.


If you want to convert only a subset of pages then enter the page range here. Invalid or empty values will be ignored.

 

 


Possible languages:
'afr': Afrikaans
'amh': Amharic
'ara': Arabic
'asm': Assamese
'aze': Azerbaijani
'aze-cyrl': Azerbaijani (Cyrillic)
'bel': Belarusian
'ben': Bengali
'bod': Tibetan Standard
'bos': Bosnian
'bre': Breton
'bul': Bulgarian
'cat': Catalan
'ceb': Cebuano
'ces': Czech
'chi-sim': Chinese - Simplified
'chi-sim-vert': Chinese - Simplified (vertical)
'chi-tra': Chinese - Traditional
'chi-tra-vert': Chinese - Traditional (vertical)
'chr': Cherokee
'cos': Corsican
'cym': Welsh
'dan': Danish
'deu': German
'div': Divehi
'dzo': Dzongkha
'ell': Greek
'eng': English
'enm': English
'Middle (1100-1500)
'epo': Esperanto
'est': Estonian
'eus': Basque
'fao': Faroese
'fas': Persian
'fil': Filipino
'fin': Finnish
'fra': French
'frk': Frankish
'frm': French
'Middle (ca.1400-1600)
'fry': Frisian (Western)
'gla': Gaelic (Scots)
'gle': Irish
'glg': Galician
'guj': Gujarati
'hat': Hatian
'heb': Hebrew
'hin': Hindi
'hrv': Croatian
'hun': Hungarian
'hye': Armenian
'iku': Inuktitut
'ind': Indonesian
'isl': Icelandic
'ita': Italian
'ita-old': Italian - Old
'jav': Javanese
'jpn': Japanese
'jpn-vert': Japanese (vertical)
'kan': Kannada
'kat': Georgian
'kat-old': Old Georgian
'kaz': Kazakh
'khm': Khmer
'kir': Kyrgyz
'kor': Korean
'kor-vert': Korean (vertical)
'kur-ara': Kurdish (Arabic)
'lao': Lao
'lat': Latin
'lav': Latvian
'lit': Lithuanian
'ltz': Luxembourgish
'mal': Malayalam
'mar': Marathi
'mkd': Macedonian
'mlt': Maltese
'mon': Mongolian
'mri': Maori
'msa': Malay
'mya': Burmese
'nep': Nepali
'nld': Dutch
'nor': Norwegian
'oci': Occitan (post 1500)
'ori': Oriya
'osd': script and orientation
'pan': Punjabi
'pol': Polish
'por': Portuguese
'pus': Pashto
'que': Quechua
'ron': Romanian
'rus': Russian
'san': Sanskrit
'script-arab': Arabic script
'script-armn': Armenian script
'script-beng': Bengali script
'script-cans': Canadian Aboriginal script
'script-cher': Cherokee script
'script-cyrl': Cyrillic script
'script-deva': Devanagari script
'script-ethi': Ethiopic script
'script-frak': Fraktur script
'script-geor': Georgian script
'script-grek': Greek script
'script-gujr': Gujarati script
'script-guru': Gurmukhi script
'script-hang': Hangul script
'script-hang-vert': Hangul (vertical) script
'script-hans': Han - Simplified script
'script-hans-vert': Han - Simplified (vertical) script
'script-hant': Han - Traditional script
'script-hant-vert': Han - Traditional (vertical) script
'script-hebr': Hebrew script
'script-jpan': Japanese script
'script-jpan-vert': Japanese (vertical) script
'script-khmr': Khmer script
'script-knda': Kannada script
'script-laoo': Lao script
'script-latn': Latin script
'script-mlym': Malayalam script
'script-mymr': Myanmar script
'script-orya': Oriya (Odia) script
'script-sinh': Sinhala script
'script-syrc': Syriac script
'script-taml': Tamil script
'script-telu': Telugu script
'script-thaa': Thaana script
'script-thai': Thai script
'script-tibt': Tibetan script
'script-viet': Vietnamese script
'sin': Sinhala
'slk': Slovakian
'slv': Slovenian
'snd': Sindhi
'spa': Spanish
'spa-old': Spanish
'Castilian - Old
'sqi': Albanian
'srp': Serbian
'srp-latn': Serbian (Latin)
'sun': Sundanese
'swa': Swahili
'swe': Swedish
'syr': Syriac
'tam': Tamil
'tat': Tatar
'tel': Telugu
'tgk': Tajik
'tha': Thai
'tir': Tigrinya
'ton': Tonga
'tur': Turkish
'uig': Uyghur
'ukr': Ukrainian
'urd': Urdu
'uzb': Uzbek
'uzb-cyrl': Uzbek (Cyrillic)
'vie': Vietnamese
'yid': Yiddish
'yor': Yoruba.


Online Audio to MIDI Converter

Use this tool to convert audio files such as mp3, wav, ogg, m4a, and many other formats to MIDI. Note: The quality of the resulting MIDI file depends largly on the input music. The MIDI file quality can range from good quality to unusable. But it is great fun to listen to the result in either way. If you are logged in you can opt-in to get notified by email once the conversion is finished.

Source file


You can either enter a remote URL (e.g. a location where the source file is located) or a local file from your device. If both, an URL and a local file are selected then one of them is ignored.


Only check this if the link points to a video portal and not directly to an audio or video file. Note: YouTube is not supported.
We support import from many video portals including Vimeo, Dailymotion, SoundCloud, BlipTV, Arte, Ard, 3Sat, Orf.at, Flickr, Instagram, Facebook, Metacafe, MTV, Myspace, MyVideo.de, NBA, NBC, NHL, Rottentomatoes, Sina, Slideshare, Space, Spiegel, Tumblr, Vice, ustream, Vevo, Weibo, Yahoo, ZDF, and others.

Email notifications

Please login to display email notification settings.


Online HDR Photo Stitcher

Use this tool for merging 3 differently exposed images into a single well-exposed HDR (high dynamic range) image. In contrast to other HDR fusion applications this tool generates natural looking results. Warning: the resolution is limited to 2048 pixels and to 3 input images. Please checkout the HDR Photo tool which does not have these limitations and which also supports custom parameters for tuning the output. If you are logged in you can opt-in to get notified by email once the conversion is finished.

Email notifications

Please login to display email notification settings.

How to create a HDR image?

  1. Select multiple JPG images with different exposure.
  2. Check the align images checkbox (optional).
  3. Click on "Create HDR photo" to create a HDR photo.
  4. Download your HDR photo.

Select exactly 3 differently exposed source images with equal image dimensions (same width and height).


Online Audio and Video portal file downloader

Use this tool to download media files from video and audio sites (like Yahoo). This tool only downloads media from video sites without any conversion - if you want to directly convert a video from a video site to audio (such as MP3 or wav) then use one of our audio converters. Note: we do not support YouTube downloads. If you are logged in you can opt-in to get notified by email once the conversion is finished.

Source file


Only check this if the link points to a video portal and not directly to an audio or video file. Note: YouTube is not supported.
We support import from many video portals including Vimeo, Dailymotion, SoundCloud, BlipTV, Arte, Ard, 3Sat, Orf.at, Flickr, Instagram, Facebook, Metacafe, MTV, Myspace, MyVideo.de, NBA, NBC, NHL, Rottentomatoes, Sina, Slideshare, Space, Spiegel, Tumblr, Vice, ustream, Vevo, Weibo, Yahoo, ZDF, and others.

Email notifications

Please login to display email notification settings.

How to download audio and video from streaming portals?

  1. Enter the URL of the song or video.
  2. Click on "Start download" button.
  3. Download the MP3 or MP4.

Online add copy protection to PDF files tool

Use this tool to add passwords, copy-, printing-, and other protections to PDF files. If you are logged in you can opt-in to get notified by email once the conversion is finished.

Source file


You can either enter a remote URL (e.g. a location where the source file is located) or a local file from your device. If both, an URL and a local file are selected then one of them is ignored.

Email notifications

Please login to display email notification settings.

How to add copy protection to a PDF file?

  1. Select the PDF file you want to protect.
  2. Enter a password which will be used to protect your PDF.
  3. Click on "Protect PDF file" to protect your PDF.
  4. Download your protected PDF file.

How to add printing protection to a PDF file?

  1. Select the PDF file where you want to add printing protect.
  2. Enter a password which will be used to protect your PDF.
  3. Check the Enable print protection checkbox
  4. Click on "Protect PDF file" to protect your PDF.
  5. Download your protected PDF file.






Protects the PDF file from being printed out.


Protects the PDF file from being edited.


Disables extraction of text, images, and other media from the PDF file.


Disables annotation (e.g. comments, form fill-in, signing) of the PDF file.


Online PDF copy/print/save protection removal tool

Use this tool to remove passwords, copy-, printing-, and other protections from PDF files. If you are logged in you can opt-in to get notified by email once the conversion is finished.

Source file


You can either enter a remote URL (e.g. a location where the source file is located) or a local file from your device. If both, an URL and a local file are selected then one of them is ignored.

Email notifications

Please login to display email notification settings.

How to remove copy protection from a PDF file?

  1. Select the PDF file.
  2. If you know the password then enter the password of your PDF (optional).
  3. Click on "Unlock PDF file" to remove copy protection from your PDF.
  4. Download your PDF file.

How to remove printing protection from a PDF file?

  1. Select the PDF file.
  2. If you know the password then enter the password of your PDF (optional).
  3. Click on "Unlock PDF file" to remove the printing protection from your PDF.
  4. Download your PDF file.


If the PDF is password protected, then you have to enter the password here.

Advanced options

The advanced PDF options allow modification of output format specific parameters.


If you want to convert only a subset of pages then enter the page range here. Invalid or empty values will be ignored.


Online URL encoder/decoder

Use this tool to encode and decode URLs.

How to encode URLs?

  1. Copy and paste the URL you want to encode or decode.
  2. Click on "Start conversion" to encode or decode the URL.
  3. Download your URL.





If selected, then spaces are encoded/decoded using percentage encoding. Else spaces are encoded/decoded as "+".