How to Tune a Bass Guitar by Ear: Relative Tuning Method

Tuning by ear is faster than a tuner once you learn it, and it trains your ear to hear pitch relationships. Every bassist should know both methods.

The 5th fret method

1. Tune the E string to a reference (tuner, piano, another instrument)
2. Press the 5th fret of the E string — this is A
3. Tune the open A string to match
4. Press the 5th fret of the A string — this is D
5. Tune the open D string to match
6. Press the 5th fret of the D string — this is G
7. Tune the open G string to match

The harmonics method

More accurate but slightly harder:

1. Play the harmonic at the 5th fret of the E string
2. Play the harmonic at the 7th fret of the A string
3. They should produce the same pitch. Adjust the A string until they match.
4. Repeat for A→D and D→G.

Why relative tuning matters

If your E string is slightly flat but you tune the other strings relative to it, you're in tune with yourself. The whole bass might be a few cents flat, but the intervals between strings are correct. For solo practice, this is fine. For playing with others, always use a reference pitch.