Guitar Tuner
Tune your Standard Guitar to Open G
Open G Tuning (D-G-D-G-B-D)
Open G tuning transforms your guitar into a G major chord when all strings are strummed open. This tuning is fundamental to blues and slide guitar, and has been a favorite of legendary guitarists for over a century. Keith Richards of The Rolling Stones famously uses Open G (often removing the low 6th string entirely) for many of the Stones' most iconic riffs. The tuning excels for slide guitar because single-finger barres produce clean major chords, and it creates rich, resonant voicings perfect for acoustic blues and folk music.
Musical genres
Blues, slide guitar, rock, country blues, folk, acoustic
Famous songs
- "Start Me Up" - The Rolling Stones
- "Brown Sugar" - The Rolling Stones
- "Tumbling Dice" - The Rolling Stones
- "Death Letter" - Son House
- "She Caught the Katy" - Taj Mahal
Tips
- A barre across all strings gives you a major chord at any fret
- Keith Richards often removes the low 6th string for a 5-string approach
- The tuning is excellent for slide guitar - the slide at any fret produces a major chord
- Experiment with open string drones for authentic delta blues sound
Instruments
Tunings
General Tunings
Raised Tunings
Lowered Tunings
Dropped Tunings
Double Dropped Tunings
Major Open Tunings
Minor Open Tunings (Cross-note)
Modal Tunings
Miscellaneous Tunings
Frequently Asked Questions
Standard guitar tuning is E-A-D-G-B-E from the lowest (thickest) string to the highest (thinnest). This tuning has been the standard for centuries and is used in most guitar music across all genres. The low E string is tuned to E2 (82.41 Hz), and the high E string is tuned to E4 (329.63 Hz).
Click the microphone icon to enable microphone access, then play a single string. The tuner will detect the pitch and show you whether the note is sharp (too high), flat (too low), or in tune. Adjust your tuning peg accordingly until the indicator is centered.
Drop D tuning lowers the 6th (lowest) string from E to D, while keeping all other strings in standard tuning (D-A-D-G-B-E). This is popular in rock and metal music because it allows for easy power chords using a single finger and produces a heavier, lower sound.
Yes! This chromatic tuner works for both acoustic and electric guitars. For electric guitars, you can either use the microphone to pick up sound from your amp, or connect your guitar directly to your computer's audio input for the most accurate results.
Open tunings are alternative guitar tunings where strumming all open strings produces a chord. Popular examples include Open G (D-G-D-G-B-D), used by Keith Richards, and Open D (D-A-D-F#-A-D), popular for slide guitar. These tunings are common in blues, folk, and slide guitar playing.
You should tune your guitar every time you play, and check tuning periodically during longer practice sessions. Temperature changes, humidity, and playing can cause strings to go out of tune. New strings especially need frequent retuning until they stretch and settle.
Common reasons include: new strings that haven't stretched yet, changes in temperature or humidity, worn tuning pegs, an improperly set nut or bridge, or old strings. Regular string changes and proper guitar maintenance can help maintain tuning stability.