Bass tuner online
Tune your 4, 5 or 6-string bass guitar with your microphone. The tuner is optimised for low notes, down to a low B.
Standard 4-string bass tuning is E A D G, the same notes as the bottom four guitar strings, one octave lower.
Also called · EADG
String chart
Tuning your bass
- 1
Allow microphone access. For the most accurate reading, play close to the microphone and pluck firmly.
- 2
Play one string and let it sustain. Low notes take a moment longer to read, so hold the note.
- 3
Tighten the string if you're flat (needle left), loosen it if you're sharp (needle right).
- 4
Tip: the 12th-fret harmonic is an octave higher and often gives a steadier reading on the lowest strings.
Bass tunings
Questions & troubleshooting
- What are the notes of bass strings?
- A standard 4-string bass is tuned E A D G, from the thickest string to the thinnest. That's one octave below the bottom four strings of a guitar.
- Why is my low E or B string hard to tune?
- Laptop and phone microphones pick up very low frequencies weakly. Play closer to the microphone, pluck firmly, or tune using the 12th-fret harmonic, which sounds an octave higher.
- What frequencies are the bass strings?
- At A4 = 440 Hz: E1 is 41.20 Hz, A1 is 55.00 Hz, D2 is 73.42 Hz and G2 is 98.00 Hz. A 5-string's low B0 is 30.87 Hz.