Starter
$4.99one time
10 transcription minutes
Convert Audio to MIDI
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One file per transcription. Batch upload is not currently supported.
AI transcription provides an editable note draft, not a guaranteed exact reproduction. Recording quality, overlapping instruments and effects can cause missing or extra notes and timing errors. Try the free trial to assess the results before purchasing.
Duration limits and billing
Free trial: one whole recording up to 0:30. Paid transcription: up to 30:00 per file. Longer recordings require paid minutes; files are not automatically trimmed.
Paid transcription uses at least 1 minute of credit per file. Longer files use their detected duration, rounded up to the next second. Credits never expire; failed jobs return the full deduction. Existing purchasers keep their original billing rules.
Keeps expressive timing and natural note placement from the recording.
Advanced settings
Shared by MIDI and MusicXML. Automatic is recommended unless you know the rhythm.
Automatic retains detected N/4 grouping. Select 6/8, 9/8 or 12/8 explicitly for compound meter.
Fixed tempo changes the output tempo map. Leave BPM blank to use the detected tempo as a constant; it does not make note detection more accurate.
Cloud processing
Your audio is uploaded securely for cloud transcription. See our Privacy Policy for third-party processing and retention details. Only upload audio you are allowed to use.
Audio to MIDI: turn a recording into notes you can edit
Audio-to-MIDI transcription estimates musical notes from a recording: their pitch, start time and duration. Unlike converting WAV to MP3, it is not a change of file format. The model has to interpret the sound, so the result may contain missed notes, extra notes or inaccurate timing.
MIDI Toolbox sends your audio to the cloud transcription service and returns an editable MIDI file, with MusicXML when available. Listen to the MIDI preview and inspect the detected notes before downloading. The MIDI contains performance instructions, not the original audio, lyrics or the exact sound of the recorded instruments.
Where audio-to-MIDI fits in a music workflow
Piano recordings and chord sketches
Turn a keyboard recording into a starting point for a piano roll. Review simultaneous notes and held chords, then correct durations and velocities rather than assuming every note of the original performance has been recovered.
Guitar lines, bass and hummed melodies
A clear single-instrument or single-melody recording is a useful place to start. Slides, vibrato, bends and breath sounds can complicate note detection; clean up short fragments and pitch errors in a MIDI editor.
Arrangement and notation drafts
Use detected notes to sketch an arrangement or begin a score. A full song with vocals, drums and layered instruments is a harder input than an isolated part. This tool does not offer user-controlled stem separation or a guarantee of correct instrument assignment.
Simple prepaid pricing
Buy transcription minutes once and use them when needed. They do not expire, and there is no recurring subscription.
Standard
$9.99one time
30 transcription minutes
Studio
$29.99one time
100 transcription minutes
No subscription or automatic renewalRestore the balance with your checkout emailFailed transcriptions automatically return minutes
Paid transcription uses at least 1 minute of credit per file. Longer files use their detected duration, rounded up to the next second. Credits never expire; failed jobs return the full deduction. Existing purchasers keep their original billing rules. Audio duration is rounded up to the next second. The current paid limit is 30 minutes per file.
Get a cleaner transcription
Source quality matters more than file format. These choices give the model a clearer musical signal.
Use a clean recording
Reduce background noise, heavy reverb, clipping and crowd sound where possible.
Favor a clear arrangement
Solo instruments and simple polyphonic passages are easier to separate than dense full mixes.
Review the result
Check note starts, durations, tempo, instruments and meter in your DAW or notation editor.
MP3 to MIDI or WAV to MIDI: which file should you upload?
Use the clearest source you already have. Renaming a file extension does not convert audio to MIDI, and saving a compressed recording as WAV cannot restore detail that was lost.
- MP3
- Suitable for an existing music clip or exported recording. Avoid repeatedly re-encoding it at low quality. A clean MP3 can be a better input than a noisy WAV.
- WAV, FLAC and AIFF
- Useful when you have the original recording or can export directly from your DAW. Lossless files avoid another lossy encoding step, but can be larger; the upload limit still applies.
- M4A, OGG and WebM
- Supported for recordings from phones, browsers and other audio tools. Only the validated first audio stream is processed, not a video track or every audio stream in a container.
MIDI or MusicXML: choose the output for your next step
MIDI for production and editing
Import the .mid file into a DAW or MIDI editor to change pitches, timing, velocity and instrument sounds. Playback depends on the synthesizer or sound library you use, so it will not reproduce the original recording’s timbre. The browser note preview is limited to 10,000 notes; that limit does not truncate the downloaded MIDI.
MusicXML for sheet music
Open MusicXML in a compatible notation editor to work with measures, voices and staves. Review key signatures, meter, rests and readable note durations. MusicXML is an editable notation format, not a finished PDF; you can continue with the MIDI Toolbox sheet-music tool for a printable score.
Choose timing and notation settings for the recording
Start with the defaults if you are unsure. These controls shape the output; they do not guarantee more accurate pitch detection.
Performance timing or quantization
Preserve performance for expressive timing. Choose quantization when you want notes aligned to a musical grid. If the transcription service cannot establish a reliable beat grid, it may return performance timing instead; the result displays that fallback.
Subdivision and time signature
Choose a straight, triplet or swing grid only when it suits the music. Automatic meter retains the detected N/4 grouping; compound meters such as 6/8, 9/8 and 12/8 require an explicit selection. A wrong setting can make an otherwise usable transcription harder to edit.
Fixed BPM
A fixed tempo changes the output tempo map. Enter 30–300 BPM, or leave the field blank to use the detected BPM as a constant. Keep performance pacing when natural tempo changes matter to your recording.
MusicXML optimization
Optional notation optimization improves staff assignment, voices, beaming and rests in MusicXML. It does not change the MIDI or repair misidentified notes, and adds processing time. If optimization is unavailable, the standard score remains the fallback.
Balance and refund policy
The charging rules are visible before you submit a file, so you know what will happen to your minutes.
Failed jobs
If the transcription service fails after reserving time, the reserved seconds are automatically returned to your balance. This is a minute refund, not a cash refund.
Access and billing issues
For duplicate charges, a missing balance or an activation email that never arrives, contact support with the checkout email and transaction details.
Approved payment refunds
When a payment refund or chargeback is approved, the corresponding purchased minutes are removed from the balance. Statutory consumer rights still apply.
Continue working with your MIDI
Preview, edit, notate or render the generated file using the other MIDI Toolbox tools.
Frequently asked questions
Practical answers about formats, accuracy, billing and files before you start.