Extract text from virtual instruments (SFZ)
To convert SFZ instruments to another format, you need Plogue Sforzando or other Audio software.
To convert other file formats to the "Sampler Instrument Definition" file type, you need software like Plogue Sforzando or a similar tool.
A .SFZ file is a plain-text configuration file used to define virtual instruments and sample mappings. Originally developed by Cakewalk and widely popularized by Plogue Sforzando, it tells a software sampler how to play audio files across a MIDI keyboard by defining pitch, velocity layers, round-robins, and effects.
The primary disadvantage of the .SFZ format is that it does not contain any actual audio data. It relies entirely on external WAV, FLAC, or OGG files. If you share a .SFZ file without the accompanying audio folder, the instrument will load empty and produce no sound. Additionally, because it is text-based and open-ended, different samplers interpret advanced opcodes (commands) differently, leading to playback errors across different digital audio workstations (DAWs).
Users typically convert .SFZ files to monolithic formats like SF2 (SoundFont 2) or NKI (Native Instruments Kontakt) to bundle the text instructions and the audio samples into a single, easily shareable file. You can also view and edit it as a simple TXT file. Standard online converters fail with .SFZ because they attempt to process audio that isn't there, instead of reading the plain-text mapping data. Just drag and drop your file into convert.guru to identify the format, view its text-based internal content, and convert it when supported.
Convert.Guru analyzes your SFZ file, detects the exact format, and lets you read the text inside.
Users also converted SF2, 7Z, WAV, ZIP, ARIA, NKI, FXP, MPDP, PDF and MZF files.
If you want to convert SFZ file to SF2, WAV, NKI, MP3, AAC, FLAC, OGG, WMA, M4A, AIFF, OPUS or ALAC, you can use Plogue Sforzando or similar software from the "Virtual Instrument Definition" category. In the File menu, look for Save As… or Export….
To convert MIDI, AAC, TTA, AU, WV, DTS, MID, FLAC, RA, MP3, PCM or WAV files to SFZ, try Plogue Sforzando or another comparable tool in the "Virtual Instrument Definition" category.
The history of Convert.Guru began over 25 years ago in California with Tom Simondi’s file-format database. A former contributor to Space Shuttle development and a software pioneer of the 1980s, Simondi established a trusted resource for file type analysis that was even referenced by Microsoft Windows XP. Today, we use modern technology to process and convert thousands of file formats while continually improving our SFZ converter.