Progression Scale Finder
What scale fits this progression?
Enter a chord progression — G D Em C, Am F C G, whatever you're working on — and instantly see the likely key, the best scales to solo with, simple pentatonic options, and chord tone targets for each chord as it passes by. With a fretboard map, position filters, and left-handed mode.
01 — Key First
Find the key, then the scale
The simplest way to solo over a progression is to find the key first. If most of the chords belong to one key, you can usually use that key's major or minor scale across the whole progression.
Roman numerals (I, IV, V, etc.) describe each chord's role in the key — useful for understanding why certain chords sound like home and others sound like tension. The Chords in Key Finder shows the full diatonic set for any key.
02 — Pentatonic First
Start with pentatonic
For most guitar players, pentatonic is the best starting point. Fewer notes to manage, and it usually sounds musical faster than running a full seven-note scale.
Major-key progressions like major pentatonic. Minor-key progressions like minor pentatonic. That's the rule that gets you 80% of the way for 20% of the effort.
03 — Target Chord Tones
Chord tones make it sing
The next level is targeting chord tones — when the chord changes, aim for notes inside the chord instead of just wandering through the scale.
Land on the root or the 3rd as the chord changes and your phrases will lock in. The Arpeggio Finder shows the chord tones for any chord across the entire neck.
04 — Borrowed Chords
When a chord doesn't fit
If one chord in your progression doesn't fit the detected key (this tool will flag it), you have two options: stay in the main scale and let the chord pass briefly, or target the notes of the borrowed chord when it appears.
The single-chord view in the Scale Over Chord Finder is useful for figuring out what to play over those passing chords.
How do I know what scale to play over a chord progression?+
Find the likely key of the chords. If the chords mostly come from one key, that key's major or minor scale will usually work across the progression.
Can one scale work over an entire chord progression?+
Yes. If the chords are diatonic to one key, one scale can work over the full progression. To sound more melodic, target chord tones as the chords change — the
Arpeggio Finder is built for that.
What is the safest guitar scale for a chord progression?+
Pentatonic is usually the safest starting point. Major pentatonic works well for major-key progressions, and minor pentatonic works well for minor-key progressions.
What if the progression has borrowed chords?+
If one chord does not fit the key perfectly, you can often stay in the main scale and use your ear, or briefly target the notes of the borrowed chord when it appears.
How should I type sharp, flat, minor, 7th, and sus chords?+
Use the root first, then the chord type. Examples: F# for F sharp, Bb for B flat, Am for A minor, G7 for G dominant 7, Cmaj7 for C major 7, Dm7 for D minor 7, Dsus4 for D suspended 4, and Dsus2 for D suspended 2.
Should I follow every chord change when I solo?+
You do not have to chase every chord change, but landing on chord tones makes your solo sound more connected. Start with one main scale, then add chord tone targeting as you improve.