Click any string to hear its reference tone. Match your guitar string to the pitch you hear.
How to Use This Tuner
This reference tuner plays the exact target frequency for each guitar string. Click a string, listen to the tone, then tune your guitar string until it matches the pitch. Work from the thickest string (6th) to the thinnest (1st).
Guitar Tuning Tips

Photo by Anastasia Lashkevich / Pexels
Standard Tuning (EADGBe)
Standard tuning is the most common guitar tuning. From the thickest to thinnest string: E2, A2, D3, G3, B3, E4. Most songs, chord charts, and lessons assume standard tuning.

Photo by Anastasia Lashkevich / Pexels
Alternate Tunings
- Drop D — Lower the 6th string one whole step to D2. Popular in rock and metal for power chords with one finger.
- Open G — Tune to D-G-D-G-B-D. Strumming open strings produces a G major chord. Used in blues and slide guitar.
- DADGAD — A suspended tuning favored in Celtic and folk music. Creates a rich, droning sound.
General Tips
- Always tune up to the target pitch, not down. If you overshoot, go below and come back up.
- New strings stretch and go flat quickly. Stretch them by gently pulling away from the fretboard, then retune.
- Tune in a quiet environment for the best results.
- Check your tuning after placing a capo, as capos can pull strings slightly sharp.
- Retune every time you pick up your guitar. Temperature and humidity affect tuning stability.