Use Guithub to Tune your 4, 5, or 6-String Bass
Most online bass tuners quietly assume your bass has four strings. If you play a 5-string with a low B, or a 6-string with a high C on top, you are usually out of luck — left to tune the "extra" strings by ear or by guesswork.
Guithub is different. It is one of the few free, browser-based tuners that lets you explicitly choose a 4-, 5-, or 6-string bass, then tunes every string to the correct pitch. No app to install, no ads, no math.
What changes on a 5- or 6-string bass
It is common for bassists to start on a 4-string instrument, which makes them the most popular type of bass by a wide margin. It also means that you may not realize the difference between a 4-string and a 5- or 6-string bass until you try one. Here's how they differ:
- 4-string: E A D G — good ol' 4-string, the classic bass range.
- 5-string: adds a low B below the E, extending your low end for heavier and modern styles.
- 6-string: keeps the low B and adds a high C above the G, giving you chordal and soloing range.
Naturally, having a tuner that supports your specific instrument is super helpful.
Bass tunings Guithub supports
These tables are generated directly from the tuner's own data, so they always match what you will see in the app — including the exact target frequency for every string.
Bass (4-string)
Standard (EADG)
| String | Note | Octave | Frequency |
|---|---|---|---|
| 1 | E | 1 | 41.20 Hz |
| 2 | A | 1 | 55.00 Hz |
| 3 | D | 2 | 73.42 Hz |
| 4 | G | 2 | 98.00 Hz |
Drop D (DADG)
| String | Note | Octave | Frequency |
|---|---|---|---|
| 1 | D | 1 | 36.71 Hz |
| 2 | A | 1 | 55.00 Hz |
| 3 | D | 2 | 73.42 Hz |
| 4 | G | 2 | 98.00 Hz |
Half Step Down (Eb Ab Db Gb)
| String | Note | Octave | Frequency |
|---|---|---|---|
| 1 | Eb | 1 | 38.89 Hz |
| 2 | Ab | 1 | 51.91 Hz |
| 3 | Db | 2 | 69.30 Hz |
| 4 | Gb | 2 | 92.50 Hz |
Bass (5-string)
Standard (BEADG)
| String | Note | Octave | Frequency |
|---|---|---|---|
| 1 | B | 0 | 30.87 Hz |
| 2 | E | 1 | 41.20 Hz |
| 3 | A | 1 | 55.00 Hz |
| 4 | D | 2 | 73.42 Hz |
| 5 | G | 2 | 98.00 Hz |
Drop A (AEADG)
| String | Note | Octave | Frequency |
|---|---|---|---|
| 1 | A | 0 | 27.50 Hz |
| 2 | E | 1 | 41.20 Hz |
| 3 | A | 1 | 55.00 Hz |
| 4 | D | 2 | 73.42 Hz |
| 5 | G | 2 | 98.00 Hz |
Bass (6-string)
Standard (BEADGC)
| String | Note | Octave | Frequency |
|---|---|---|---|
| 1 | B | 0 | 30.87 Hz |
| 2 | E | 1 | 41.20 Hz |
| 3 | A | 1 | 55.00 Hz |
| 4 | D | 2 | 73.42 Hz |
| 5 | G | 2 | 98.00 Hz |
| 6 | C | 3 | 130.81 Hz |
How to switch string count in the tuner
- Open the bass tuner.
- Choose your instrument — 4-, 5-, or 6-string bass — from the instrument selector.
- Pick a tuning (Standard, Drop D, Drop A, or Half Step Down, depending on the bass).
- Play each string and watch the meter as you adjust your tuning peg. Green means you are in tune.
Prefer the keyboard? Press Cmd+K (or Ctrl+K on Windows) to open the command palette and switch instruments or tunings instantly — handy between songs at a gig.
Alternate bass tunings
Standard tuning is only the start. Guithub ships the alternate bass tunings players reach for most:
- Drop D on 4-string (D A D G) — drop the low E a whole step for heavier riffs and easy power chords.
- Drop A on 5-string (A E A D G) — the low B dropped to A for extended-range metal.
- Half Step Down (Eb Ab Db Gb) — match guitarists who tune down a semitone.
Playing along with a guitar in an alternate tuning? Guithub also has a full guitar tuner and a chromatic tuner for anything else.
Don't see your bass tuning?
Guithub supports 4-, 5-, and 6-string basses with the most common tunings. If yours is missing, tell me and I'll add it.
Request a bass tuningTune with confidence
Whether you are locking in a low B for the first time or retuning a 6-string mid-set, Guithub gives you a tuner that respects how your bass is actually built.
Open the bass tuner and give it a try. If it earns a spot in your rig, consider leaving a tip — and read the story behind Guithub if you want to know why it exists.