WAV to MIDI Converter Online
Upload a WAV recording and get an editable MIDI transcription you can preview, fine-tune, and download — right in your browser, no upload limits on quality.
- WAV / lossless
- Piano roll preview
- Sheet music export
Click a note to hear it
What is WAV to MIDI?
WAV to MIDI converts an uncompressed audio recording into editable MIDI notes. Because WAV keeps the full, lossless waveform — no MP3 compression artifacts — it is an ideal source for transcription: the pitch-detection model gets the cleanest possible signal to read notes from.
The output is a MIDI file describing the performance rather than the sound, so you can reopen it in a DAW or notation editor to transpose, quantize, re-instrument, or print it. Preview the notes on the piano roll and correct anything the model missed before you export.
How it works
Upload your WAV file
Drop a WAV recording — lossless audio gives the transcription the cleanest signal to work from. MP3 is supported too. No account needed to convert and preview.
Preview and fine-tune
Listen to the transcription on an interactive piano roll, compare it against the original WAV, and adjust detection sensitivity, minimum note length, or pitch bends to re-transcribe.
Download MIDI or sheet music
Download the MIDI file, correct wrong notes directly on the roll, or export sheet music as MusicXML/PDF for MuseScore, Sibelius, or printing.
Formats & limits
- Input formats
- WAV
- Output
- MIDI
- File limits
- 50 MB · 10 min
- Price
- Free · no sign-up
Highlights
Lossless source
Feed the model full-quality WAV audio with no compression artifacts to trip it up.
Piano-roll preview
Check the transcription against the original and tune detection before download.
MIDI & score export
Export .mid for your DAW or MusicXML/PDF for notation software.
Getting the cleanest transcription from WAV
- WAV is lossless, so it avoids the compression artifacts that can confuse detection in low-bitrate MP3s — start from WAV whenever you have it.
- Monophonic sources (a single melody line — vocals, flute, lead guitar) transcribe far more accurately than dense mixes.
- Trim intros, applause, and silence before uploading — cleaner input means fewer ghost notes.
- If you hear extra notes, lower the detection sensitivity; if soft notes are missing, raise it and re-transcribe.
Frequently asked questions
How do I convert WAV to MIDI?
Upload your WAV file — up to 50 MB and roughly 10 minutes — and it runs through the same Basic Pitch transcription engine used for every audio source on this site, with no separate WAV-specific model behind it. The result lands on an interactive piano roll where you can play it back against the source, adjust detection sensitivity or minimum note length, and re-transcribe the same upload without submitting the file again if the first pass needs tuning. Once it looks right, download the generated .mid file directly with no account required, or sign in first to unlock full note editing plus exporting the result as MusicXML or PDF sheet music alongside the plain MIDI download — no separate tool needed for either, and the transcription quality is identical whether or not you sign in.
Is WAV better than MP3 for transcription?
Usually yes, but the reason matters more than the rule of thumb. WAV stores audio uncompressed, so it preserves fine detail — quiet notes, subtle pitch information, sharp transients — that lossy MP3 encoding can smear or discard entirely, especially at lower bitrates. A high-bitrate MP3 and a WAV of the same recording will transcribe almost identically, since the model only sees whatever detail survived encoding either way; the gap only opens up when the MP3 source was compressed aggressively enough to lose real musical information. Both formats are fully supported here, so there's no need to convert one to the other first — if you have the original WAV, use it, and if you only have a decent-quality MP3, that's usually fine too — chasing WAV for its own sake rarely changes the outcome unless the MP3 was genuinely low-bitrate.
Is this WAV to MIDI converter free?
Yes — converting and previewing is completely free, with no account required. Upload a WAV file, watch the transcription build on the piano roll, and listen back against the original immediately, all without signing up. What requires an account is everything downstream of that first pass: saving the result to your conversion history, using the full note-editing tools (move, delete, transpose, re-quantize) instead of just previewing, and exporting sheet music as MusicXML or PDF alongside the MIDI download. A quick one-off MIDI download without editing needs no account at all — the transcription engine itself is identical either way, whether you're signed in or not, so nothing about the free tier is a stripped-down demo of the real thing, just a smaller feature set layered on top of the same result.
What is the maximum file size?
Uploads are capped at 50 MB and roughly 10 minutes per file, a ceiling that comfortably covers most individual recordings and practice takes without any trimming. WAV files are uncompressed, so they run noticeably larger than an MP3 of the same length — a few minutes of CD-quality stereo WAV can approach that limit faster than you'd expect, so if you hit it, either export at a lower sample rate or bit depth, or trim to the specific passage you actually need rather than uploading an entire long session. For best transcription results regardless of file size, favor a dry, monophonic recording — a single melodic line without heavy accompaniment — since that is what the underlying model performs best on, regardless of how much headroom you have left in the 50 MB ceiling.