free tool
Turn a MIDI file into a WAV or MP3 you can use anywhere. Play it through a General MIDI SoundFont, or pick your own SF2 to hear the song with your sounds. It runs in your browser, so your files never leave your computer.
Drop a .mid file here
Drop a SoundFont (.sf2) here
simpleSF2 is the free SoundFont player plugin this converter's engine comes from. Load any SF2 on a MIDI track and change sounds as you write. VST3, AU and CLAP.
faq
A MIDI file holds notes, not sound. It says which instrument plays which note and when, and whatever plays it supplies the sounds. That's why the same MIDI sounds different on every computer. A SoundFont is a bank of sampled instruments, and this tool plays the MIDI through one to make the audio.
No. The MIDI file and any SoundFont you pick are read in your browser, the audio is made there, and the WAV is saved straight from it. Nothing is sent to a server.
An SF2 is a set of instruments, so it needs notes to play. Add it in step 2 with a MIDI file, and the WAV is the song played with your SF2's sounds. To record single notes or your own playing, load the SF2 in simpleSF2 in your DAW and bounce the track.
Standard MIDI files (.mid and .midi), type 0 and type 1, including karaoke .kar files. Drums play on channel 10, as in General MIDI. Each channel's program changes, volume, pan, pitch bend and sustain pedal are played.
Yes. Pick MP3 next to the Convert button. It also makes FLAC and AIFF. WAV and FLAC keep the full quality; MP3 at 320 kbps is close and much smaller, which suits sharing.
Each player uses its own sounds. Windows plays MIDI with the Microsoft GS Wavetable Synth, and older games used a Sound Blaster or a Roland Sound Canvas. Try a SoundFont made to match the sound you remember.
Just want to listen? The free online MIDI player plays a MIDI file with any SoundFont, no download needed. More on SoundFonts: the best free SoundFonts, what an SF2 file is, or all guides.