About Guitar Scale Master

Service Overview

Guitar Scale Master is a free web application designed to support guitarists in their practice and songwriting. By visually displaying scales on the guitar fretboard, you can intuitively understand scale structures and fingering patterns.

It serves as a learning tool for beginners memorizing scales, and as a reference for experienced players exploring new scales or seeking ideas during composition.

Main Features

🎸

Scale Visualization

Display 13+ scales (Major, Minor, Pentatonic, Modes, Miyako-bushi, etc.) clearly on the guitar fretboard. Root notes are shown in red, other scale notes in green.

🎵

Audio Auto-Analysis

Upload MP3, WAV, or M4A files and AI will automatically detect the key and scale. Perfect when you want to learn a song but don't know the scale.

🎹

Scale Playback

Listen to the selected scale's notes. Connect the sounds with fretboard positions while training your ear.

🎥

Reference Videos

YouTube videos for each scale and root note. Deepen your understanding with performance examples and tutorials.

🔧

Tuning Support

Supports various tunings including standard, Drop D, 7-string guitar, half-step down. Switch displays to match your guitar setup.

📱

Responsive Design

Works comfortably on PC, tablet, and smartphone. On mobile, the fretboard can be rotated 90 degrees.

Supported Scales

Basic Scales

  • ・Major
  • ・Natural Minor
  • ・Harmonic Minor
  • ・Melodic Minor

Mode Scales

  • ・Dorian
  • ・Phrygian
  • ・Lydian
  • ・Mixolydian
  • ・Locrian

Pentatonic & Others

  • ・Major Pentatonic
  • ・Minor Pentatonic
  • ・Blues
  • ・In Sen

How to Use

  1. 1

    Choose Root Note

    Select the base note from 12 notes: C, D, E, etc.

  2. 2

    Choose Scale

    Select the scale you want to learn: Major, Minor, Pentatonic, etc.

  3. 3

    Check the Fretboard

    Look at the positions on the fretboard and try playing them on your guitar.

  4. 4

    Listen and Learn

    Press the play button to hear the scale and improve retention through ear training.

Recommended For

  • ✓Guitar beginners wanting to learn scale basics
  • ✓Those wanting to try improvisation but unsure what to play
  • ✓Those wanting to know the key and scale of songs to cover
  • ✓Those needing scale reference during composition
  • ✓Intermediate players wanting to learn scales beyond pentatonic
  • ✓Those wanting to explore diverse scales like Japanese scales or modes
Try It Now → →