Banjo
How to Tune a 5-String Banjo to Open G
Tune a 5-string banjo to standard open G tuning with a clear string-by-string process, octave guidance, and common troubleshooting tips.
Standard five-string banjo tuning is called open G because the open strings already form a G major chord. Its note pattern is written gDGBD. The lowercase g represents the short fifth string, which is a high note even though it is physically positioned above the lower-pitched fourth string.
That unusual fifth string is the main reason guitar-based tuning habits can be confusing on a banjo. Once you separate string number from pitch order, the process becomes straightforward.
Learn the gDGBD string order
The long strings are numbered one through four from the floor side toward your face when the banjo is in playing position. The first string is D, the second is B, the third is G, and the fourth is a lower D. The short drone string is the fifth string and is tuned to a high G.
Do not tune the fifth string to the same low octave as the third string. They share the note name G, but the short fifth string sounds one octave higher. A chromatic tuner can show the right letter while you are still in the wrong octave, so listen for the expected high drone character as well.
- 1st string: D4
- 2nd string: B3
- 3rd string: G3
- 4th string: D3
- 5th string: G4
Tune safely from the fourth string upward
Beginning with the low fourth string gives your ear a stable foundation. Pluck near the bridge with moderate force, wait for the pitch to settle, and make small peg movements. Banjo strings are thin and responsive, so a large turn can move past the target quickly.
After tuning the four long strings, tune the fifth string last. Its peg is usually mounted partway up the neck. Make sure you are turning that fifth-string peg rather than reaching for a headstock peg by habit.
- 1Tune the fourth string to low D.
- 2Tune the third string to G.
- 3Tune the second string to B.
- 4Tune the first string to high D.
- 5Tune the short fifth string to high G.
- 6Brush all open strings together and repeat the check.
Use the open chord as a final check
A gentle strum across all five open strings should produce a settled G major sound. If the individual tuner readings look correct but the chord sounds severely dissonant, check whether the B string was tuned to B-flat or whether one of the repeated D or G notes is in the wrong octave.
You can also compare the fifth-string G with the first string fretted at the fifth fret. Those notes should match. Compare the open first-string D with the second string at the third fret. These checks are useful when microphone recognition is unstable, but they assume at least one reference string is already correct.
Check bridge position when fretted notes sound wrong
A banjo bridge is movable. If it has shifted, open strings may tune correctly while notes up the neck sound sharp or flat. Compare the harmonic at the twelfth fret with the fretted twelfth-fret note. If the fretted note is sharp, the speaking string length is generally too short; if it is flat, the length is generally too long.
Bridge placement adjustments affect playability and intonation, so move the bridge in very small increments and keep it upright. If you are unsure, mark the current position lightly or ask a repair technician to set the instrument up. Tuning pegs cannot correct a misplaced bridge.
Other useful banjo tunings
Open G is the best starting point for bluegrass instruction and many common chord shapes, but it is not the only banjo tuning. Double C, gCGCD, is common in old-time playing. Sawmill, gDGCD, changes the second string and creates a suspended sound. Players often capo these shapes and raise the fifth string with a spike or fifth-string capo.
Always select the intended tuning before turning pegs. Moving directly between alternate tunings changes string tension, and the other strings may drift while the neck settles. Retune the complete instrument after any tuning change or capo adjustment.
Frequently asked questions
What is standard tuning for a 5-string banjo?
Standard open G tuning is gDGBD. The short fifth string is a high G, followed by D, G, B, and D across the four long strings.
Why is the fifth banjo string so high?
The fifth string is a short drone string. Its shorter vibrating length produces the high G that gives five-string banjo rolls their characteristic sound.
Can a guitar tuner tune a banjo?
A chromatic guitar tuner can detect the notes, but a banjo mode is clearer because it shows the correct string order and helps prevent octave mistakes.