First you need to add file for conversion: drag and drop your MP3 file or click the "Choose File" button. Then click the "Convert" button. When MP3 to MIDI conversion is completed, you can download your MIDI file. ⏱️ How long does it take to convert MP3 to MIDI? MP3 to WAV, Online Converter - Convert Video, Audio, Image, PDF - OnlineConvert.com, Online Convert files like pdf, images, video, documents, audio and more to other formats with this free and fast online converter. Click the “Choose Files” button to select your WAV files. Click the “Convert to OGG” button to start the conversion. When the status change to “Done” click the “Download OGG” button. irWEGh.