Guitar Scientist

The fretboard editor with music theory built in

Draw fretboard diagrams in your browser, or generate scales, chords and voicings in any tuning. Export as PNG or PDF, share with the community, or keep your work private.

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A Guitar Scientist diagram: the CAGED system in A minor, with five shapes across the fretboard
30,825 registered guitarists 44,840 diagrams in the public library

See it in action

What you can create

Chords and voicings

Any chord in any tuning. Use the chord finder to explore voicings on shapes you already play.

Scales, modes, arpeggios

Full-fretboard views or position-based layouts (CAGED, three-notes-per-string), generated in one click.

Exercises and full lessons

Multi-fretboard documents with titles, notes, labels, and embedded YouTube videos alongside the diagrams.

Editor features overview

How it works

Built for guitarists, not designers

Click strings at frets. The editor handles note names, intervals, tuning and number of strings. No rectangles to drag, no grids to align.

Scale, chord and shape generators

Generate any scale in any tuning, find chord voicings, expand a fingering into related shapes. Skip the pen-and-paper part.

Community library as a starting point

Thousands of public diagrams. Fork one that's close to what you need and edit it, or use others' work to learn new voicings and positions.

PNG and PDF export

Export at the quality you need. Use your diagrams in lesson sheets, method books, tabs or social posts.

Pricing

Start free. Upgrade when you outgrow it.

Free

Full editor, no trial, no card required.

  • Create and save diagrams (up to 1/day)
  • Browse the full community library
  • PNG and PDF export
  • Up to 8 fretboards per document
Most popular

Pro · €49/year

Heavier use and advanced generators.

  • Unlimited documents
  • Up to 24 fretboards per document
  • Selectable-quality PNG and PDF export
  • Scale and chord shape generators
  • Private collections (share with students)
  • Guitar Scientist Trainer app

Cancel anytime · Your diagrams stay yours even if the membership ends

Start now — it's free

Open the editor without an account, or sign up to save and share your work.

Try the editor → Create a free account

Guitar Scientist is a solo project, maintained by a musician. It started as JavaScript experiments for scales and chords, and grew into a drawing tool and theory engine at the same time — for players who want to understand why the fingers go where they go.