5 strings · B Standard
5-string bass tuner.
Tune a 5-string bass: B E A D G, Drop A or any shift, at any A4.
Tuner · Any tuning
Tune your 5-string bass.
Pluck a string and the meter shows how far off it is. Tap any string to hear it at its true pitch and tune by ear.
- Pick any instrument and tuning
- Shift it down or up by half steps
- Set A to anything: 440, 432, 442…
B E A D G
Check string tension →The sound never leaves your device.
Keys: Space start or stop · ← → half step · ↑ ↓ A (Shift: bigger steps) · 1–9 string · M mode · R hear · − + volume · L copy link · Esc done
Ready
Strings 1 → 6
3 times each
Tap Start, then pluck any string.
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Strings · tap to hear
Instrument
Try uke, bari, 5 string, cello…
Tuning
B Standard
Shape
Shift
Standard pitch
Higher or lower
Fine-tune
Moves every string a little, for example to match a recording.
Custom tuning
Any strings, any notes
One row for each string. The top row is the top string, usually the thickest.
Start from
Strings
+ adds a lower string at the top. − takes the top string away.
Notes from C0 to C8. Type a note like D2, F♯3 or B♭1, or use − and +.
Save and use keeps it on this device (up to 8 tunings). Use without saving tunes with it for now.
Reference A
Slider 380–500 Hz. Type any value from 300 to 600 Hz.
More pitches
Sound
Violin, viola, cello and double bass start with Bowed, the rest with Acoustic.
Note length
Match a recording Beta
Find the A a song was recorded at, then tune to it and play along.
…listening
Play the song, loud and clear.
Result
This recording sits on A 440
The tuner already matches it: nothing to change.
A recording is only known within a half step: if the song is a half step down, also change the tuning.
Beta: tested on real records and synthetic songs. Check the result by ear.
Nothing is uploaded: the sound is measured on this device.
Settings
Mode
Guided: one string at a time, from the thickest.
Meter
Bar: a slider with a mint in-tune zone.
Note length
How long a tapped string and Hear sound. Repeat plays the string again every few seconds, Continuous holds it: tap it again to stop.
Reference sound
Violin, viola, cello and double bass start with Bowed, the rest with Acoustic. A sound you pick stays.
Volume
Phone speakers play very low notes an octave up.
Note names
Sharps and flats
Octave numbers (E2, E4)
Tells the two E strings apart: E2 is the low one, E4 the high one.
Frequencies (Hz)
Each string's pitch in hertz, such as 82.4 Hz.
In tune within
Precise is not used with harmonics: Normal ±3 applies.
Harmonic mode
For one low string: play its 12th-fret harmonic (×2) or its 5th-fret one (×4).
Pro view
The pitch heard in Hz, tenths of a cent and the input picker. Turns on octave numbers and frequencies.
Device names appear after you allow the microphone.
Input channel
Auto picks the channel with sound. Interfaces: choose the input your instrument is plugged into.
Background
Night ocean, cosmos, forest and more.
The sound never leaves your device. No account, no cookies.
Standard tuning
5-string bass tuning
The 5-string adds a low B0 at 30.87 Hz. That is far below the point where most phone mics start to lose level, so the low B is the hardest string to tune with a phone.
Strings 1 to 4 are tuned like a 4-string bass: E A D G.
Tip. For the low B, use the 12th-fret harmonic (×2 mode), plug in through an audio interface, or match it by ear: String 5 at fret 5 is E, the same note as open String 4.
B E A D G
Standard tuning: notes and frequencies
| String | Note | A = 440 | A = 432 | A = 442 |
|---|---|---|---|---|
| 5 | B0 | 30.87 | 30.31 | 31.01 |
| 4 | E1 | 41.20 | 40.45 | 41.39 |
| 3 | A1 | 55.00 | 54.00 | 55.25 |
| 2 | D2 | 73.42 | 72.08 | 73.75 |
| 1 | G2 | 98.00 | 96.22 | 98.44 |
Measured
How the tuner hears a 5-string bass
On a phone, B0 is the hardest 5-string bass string to hear: in our phone-mic model its fundamental arrives about 20 dB quieter, so the tuner works from the overtones and checks the octave against your tuning. In our phone-mic test B0 still read within about 2 ¢, the 5-string bass strings above it within about 2 ¢, and clean test tones within 0.2 ¢.
Low notes. The lowest string here is B0 at 30.87 Hz. Most phone mics lose a lot of level below 80–100 Hz, so they mostly hear the string's overtones. If the reading jumps, play the 12th-fret harmonic with the ×2 harmonic mode, or plug in through an audio interface. That's physics, not you.
String tension
String tension
A typical 45–130 set on a 34″ scale pulls about 197 lb (89 kg) in B Standard, or 39.4 lb per string on average.
Check string tension → String by string, with your own set and scale length.
- String by stringPounds, kilograms or newtons for each string, so you see which one goes slack first.
- Your set, your scalePick a common set or type your own gauges, on any scale length.
- Any tuning, any A4Drop, standard and open tunings, shifted by half steps, at the A you use.
Other 5-string bass tunings
Shift the whole tuning
The tuner can move all five strings together, from 5½ whole steps down to an octave up, and add fine cents on top. Each step keeps every chord shape the same.
- C♯ StandardAll strings 2 half steps higher. Notes: C sharp F sharp B E A
- C StandardAll strings 1 half step higher. Notes: C F B flat E flat A flat
- B StandardThis pageThe usual 5-string bass tuning. Notes: B E A D G
- B♭ StandardAll strings 1 half step lower. Notes: B flat E flat A flat D flat G flat
- A StandardAll strings 2 half steps lower. Notes: A D G C F
Questions
What are the standard 5-string bass notes?
From String 5 to String 1: B0 E1 A1 D2 G2 (B Standard). At A4 = 440 Hz they are 30.87, 41.20, 55.00, 73.42, 98.00 Hz.
Can a phone really tune a low B?
Often not from the open string alone. The harmonic at the 12th fret (61.74 Hz) is much easier, and the ×2 harmonic mode reads it as B0. An audio interface works best of all.
Can I tune my 5-string bass lower or higher?
Yes. Use the ◂ ▸ arrows on the tuning chip to move every string by a half step. One half step down takes about 11% of the tension off; one half step up adds about 12% (approx.).