# A Field Guide to WAV to MIDI ConversionSongwriters often start with a theme and a mood before any melody exists. SampLab Pro is an online music toolbox for producers, songwriters, musicians and students, with 12 tools on one site. This page looks at one of them, covered in more detail under [WAV to MIDI conversion for solo instruments](https://samplab.pro/wav-to-midi/).## What this pack of tools doesAudio to MIDI and WAV to MIDI turn melodies and solo instruments into editable MIDI notes in your browser. Nine of the tools run directly in your browser and are free to use without an account. Files for these tools are processed locally on your device and are not uploaded. The interface is available in 11 languages.## WAV to MIDIThe WAV to MIDI converter handles WAV recordings of melodies and solo instruments and produces editable MIDI notes, working locally in the browser.## What the toolbox covers- Audio to MIDI and WAV to MIDI conversion- BPM, key and timestamped chord detection- AI lyrics and an AI music generator- A browser MIDI editor with undo- AI stem splitting into vocals, accompaniment, bass and drums- Lead sheets with chord labels and MusicXML export- An interface in 11 languages- MIDI to WAV rendering with Piano-like, Synth or FM voices## Step by step1. Open the tool you need on samplab.pro; the browser tools need no sign-up.2. Load your audio or MIDI file.3. Run the analysis, conversion or edit.4. Preview the result.5. Download it, or send it on to the next tool.## Typical use cases- Songwriters drafting lyrics and quick demos- Musicians learning songs by ear- Students transcribing melodies and chords- Teachers building lead sheets for lessons- Hobbyists trimming and converting audio files- Producers preparing stems for remixes or practice## Local tools versus AI toolsMost of the toolbox works without any account. Cutting audio, converting audio or WAV to MIDI, finding BPM, key and chords, editing MIDI, rendering MIDI to WAV, splitting frequency bands and drafting lead sheets all happen locally in the browser, with no upload. Stem splitting, lyric writing and song generation are AI tasks that run on credits.## Free plan and creditsThere is a free plan. The browser tools need no sign-up, and the AI tools are paid for in credits. New free accounts get 50 credits, and a daily check-in adds 10.## Honest limits- AI tools use credits, and generations are not unlimited.- Local processing applies only to the nine browser tools; the AI tools upload files.- There is no public API.- A free account gets 50 credits at sign-up plus 10 credits for each daily check-in; beyond that, AI use is limited by credits.- The project is not open source.- Automatic transcription and detection are estimates and may need manual correction.## FAQ**How many languages are supported?** The interface is available in 11 languages.**Can tools be chained?** Yes. A stem can go to WAV to MIDI, then to the MIDI editor, then to audio or MusicXML.**Is there an API?** No.