How to Tune a Bass Guitar
Updated Nov 11, 2026 · By 
Jonah Mercer · Editorial policy
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Clip a chromatic tuner to the headstock and tune each open string to E, A, D, G, from the thickest string to the thinnest. Pluck one string at a time and turn its tuning peg until the tuner shows it in tune. Check every string again at the end, since tuning one string can shift the others.
Clip a chromatic tuner to the headstock
Clip the tuner to the headstock so its display faces you. Set the tuner to chromatic mode, so it reads any note instead of locking to one tuning. Clip it on firmly so it picks up the string's vibration through the headstock, and it keeps working when other instruments play nearby. The display shows the note the string plays and whether it sits flat or sharp. Leave the tuner clipped on while you work through the strings.
Start with the lowest string
Pluck the thickest string open, without pressing it against the fretboard. The tuner should show E. If the note reads flat, turn the tuning peg to raise the pitch. If it reads sharp, turn the peg the other way to lower it. Turn the peg in small steps and pluck the string again after each turn, so the tuner reads the settled pitch. Stop when the display shows the string in tune.
Tune the remaining strings in order
Move to the next string and repeat the same steps: pluck it open, read the note, and turn its peg until the tuner shows it in tune. The strings tune to A, then D, then G, from the thickest to the thinnest. Tune one string fully before you move to the next, so you always know which string you are working on. If a string keeps drifting away from its note, pluck it again and turn the peg in smaller steps.
Check every string again
After the last string is in tune, pluck each string once more from the lowest to the highest. Tuning one string can shift the others, so a string you tuned first can sit flat or sharp by the time you finish. Adjust any string that has moved, then check the full set once more. The bass is in tune when each open string reads its note on the tuner.
Know when a string needs replacing
A string that no longer holds tune may be worn out. Look for strings that look discolored or feel rough, and for rust on the winding. A string that slips out of tune soon after you tune it has reached the end of its life. Replace the worn string and tune the bass again from the lowest string.
What you need
New bee Guitar Tuner Rechargeable
A rechargeable clip-on tuner with a color screen and chromatic mode, plus a 360-degree rotatable screen, for guitar, bass, ukulele, violin, and cello.
- Chromatic mode
- Rechargeable
- Tuner type: Clip On
D'Addario Micro Headstock Tuner
A compact headstock tuner with a tri-color backlit screen that shows red, yellow, and green, and a piezo transducer that reads vibration.
- Tuner type: Headstock
Snark SN1X Clip-On Chromatic Tuner
A clip-on chromatic tuner with a display that rotates 360 degrees, pitch calibration from 415 to 466 Hz, and a tap tempo metronome.
- Chromatic mode
- Tuner type: Clip-On
AODSK Clip-on Guitar Tuner Accurate Chromatic
A clip-on chromatic tuner with a large clear LCD display and a 360-degree rotatable screen, for acoustic guitar, ukulele, bass, and violin, with 10 guitar picks included.
- Chromatic mode
- Tuner type: Clip-On
These come from our ranked list Best Bass Tuner, which compares them spec by spec.
Frequently asked questions
What notes does a bass guitar tune to?
A four-string bass tunes to E, A, D, G, from the thickest string to the thinnest. Tune each open string to its note with a chromatic tuner, then check every string again.
How do I know if a string is flat or sharp?
The tuner display shows the note and whether it sits below or above it. Flat means the pitch sits below the note, so turn the peg to raise it. Sharp means the pitch sits above the note, so turn the peg to lower it.
How often should I change bass strings?
Change them when they show signs of wear, not on a fixed schedule. Look for strings that look discolored or feel rough, rust on the winding, and strings that no longer hold tune.
Can I use a guitar tuner on a bass?
Yes, if it has a chromatic mode. A chromatic tuner reads any note, so it covers the low notes of a bass. Set the tuner to chromatic mode and tune each open string to E, A, D, G.
Ranked guitar tuners lists
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