Bass guitar standard 4-string tuning: E A D G
This bass guitar tuner listens through your microphone and shows the closest string, how many cents you are from it, and whether to tighten or loosen. Tap any string's button to hear its reference tone and tune by ear instead.
| String (top to bottom) | Note | Frequency |
|---|---|---|
| 1 | E1 | 41.20 Hz |
| 2 | A1 | 55.00 Hz |
| 3 | D2 | 73.42 Hz |
| 4 | G2 | 98.00 Hz |
Tips for tuning a bass guitar
Bass notes are low, so let each string ring for a moment before reading the tuner, and pluck with the side of your finger for a cleaner fundamental. A 5-string bass adds a low B0 (30.87 Hz).
Tune in a quiet room, play one string at a time, and let it ring past the initial attack before you read the needle. Within ±5 cents is in tune for almost any purpose. Your audio is analysed in your browser and never uploaded.
Prefer a different instrument? See the chromatic tuner or any of the tuners below.
Questions
What are the notes of a bass guitar in standard 4-string tuning?
From the lowest string: E1 (41.20 Hz), A1 (55.00 Hz), D2 (73.42 Hz), G2 (98.00 Hz).
How do I tune a bass guitar without a tuner?
Tap each string's reference tone on this page and adjust the peg until the string matches it. When two notes are almost the same you'll hear a slow wobble; it disappears when they match.
Does the tuner work on my phone?
Yes. Open the page in your phone's browser, allow the microphone and hold the phone close to the instrument.
More free tools
Online tuner · Online metronome · BPM tapper · Interval ear training · Chord ear training · Tone deaf test · Vocal range test · Note frequency chart · Binaural beats generator · Frequency sweep generator · White, pink & brown noise · Tone generator · Perfect pitch test · Hearing test