What Key Am I In?
Guitar Chord Analyser
If you’ve ever sat down with a handful of chords and wondered what key you’re playing in, this tool will tell you — and more importantly, explain why.
The What Key Am I In app analyses the chords you’re playing, identifies the most likely key, and tells you which scales to use over them. It’s written in plain English, not music theory jargon. No sign-up required. Completely free.
How to use it
Tap the chords you’ve been playing, hit Analyse, and the app gives you a full breakdown — the key, why those chords point to it, and the scales that will sound best over them. It works for major keys, minor keys, and ambiguous progressions where more than one key is possible.
What it’s useful for
- Working out the key of a song you’re learning by ear
- Understanding why certain chords sound good together
- Finding the right scale to improvise or solo over a chord progression
- Writing songs and wanting to know what key your chords belong to
- Making sense of music theory in a practical, guitar-focused way
Why knowing your key matters
Most guitarists learn scales and chords separately and never connect them. When you know what key you’re in, everything clicks into place — the chords, the scales, the arpeggios all come from the same pool of notes. This tool is the bridge between the chords you already know and the theory that explains why they work.
FREE TO USE. NO ACCOUNT NEEDED.
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