5-String Bass Tuner
Tune a 5-string bass guitar to standard tuning BEADG with a free mic tuner that shows note, Hz and cents for every string.
Values use equal temperament with A4 fixed at 440 Hz. Play one open string at a time and match it against the tuner below.
TuneStand needs microphone access to detect pitch. Audio is analysed on your device and never uploaded.
A 5-string bass adds a low B string below standard EADG, giving you B0, E1, A1, D2 and G2. The extra string extends the range down a fourth, popular in metal, gospel and modern session playing where the extra low notes matter.
Tuning the low B string
The top four strings, E1, A1, D2 and G2, match a standard 4-string bass exactly. The fifth string is added below the low E and tunes to B0 at 30.87 Hz, deep enough that it sits near the bottom edge of what a typical bass amp and speaker can reproduce cleanly.
Because B0 is so low, give the tuner a strong, sustained pluck and avoid background rumble in the room, which can confuse the pitch detector. Some 5-string basses instead add a high C string above the G rather than a low B; if your bass is strung that way, tune the top four strings here and add a C a fourth above G2.
Frequently asked questions
What is standard tuning for a 5-string bass?
B0, E1, A1, D2, G2 from lowest to highest. The top four strings match a standard 4-string bass, with a low B string added underneath.
What frequency is the low B string on a 5-string bass?
B0 is 30.87 Hz, close to the lower limit of typical bass amplification and a fourth below the standard low E at 41.2 Hz.
Do all 5-string basses add a low B?
Most do, but some are strung with a high C string above the G instead. Check which layout your bass uses before assuming which string is the added one.