4 strings · EADG (orchestral)
Double bass tuner.
Tune a double bass: E A D G (orchestral tuning), or go up to solo tuning, at any A4.
Tuner · Any tuning
Tune your double 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…
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.
Your browser asks once · nothing is recorded
Strings · tap to hear
Instrument
Try uke, bari, 5 string, cello…
Tuning
EADG (orchestral)
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
Double bass tuning
Orchestral tuning is E1 A1 D2 G2, the same notes as a bass guitar. The low E is 41.20 Hz, which phone mics hear only faintly.
Harmonics are the classic way to tune a double bass: they are louder and higher, so both your ear and the mic catch them easily.
Tip. Touch the string lightly at its middle and pluck: you get a harmonic one octave up. Turn on the ×2 harmonic mode to read it directly.
E A D G
Standard tuning: notes and frequencies
| String | Note | A = 440 | A = 432 | A = 442 |
|---|---|---|---|---|
| 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 double bass
On a phone, E1 is the hardest double bass string to hear: in our phone-mic model its fundamental arrives about 16 dB quieter, so the tuner works from the overtones and checks the octave against your tuning. In our phone-mic test E1 still read within about 2 ¢, the double bass strings above it within about 1.5 ¢, and clean test tones within 0.2 ¢.
Low notes. The lowest string here is E1 at 41.20 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.
Shift the whole tuning
The tuner can move all four strings together, from an octave down to an octave up, and add fine cents on top. Each step keeps every chord shape the same.
- F♯ B E AAll strings 2 half steps higher. Notes: F sharp B E A
- F B♭ E♭ A♭All strings 1 half step higher. Notes: F B flat E flat A flat
- EADG (orchestral)This pageThe usual double bass tuning. Notes: E A D G
- E♭ A♭ D♭ G♭All strings 1 half step lower. Notes: E flat A flat D flat G flat
- D G C FAll strings 2 half steps lower. Notes: D G C F
Questions
What are the standard double bass notes?
From String 4 to String 1: E1 A1 D2 G2 (EADG (orchestral)). At A4 = 440 Hz they are 41.20, 55.00, 73.42, 98.00 Hz.
What is solo tuning?
Solo tuning raises every string a whole step: F♯1 B1 E2 A2. It needs solo strings. Tap the ▸ arrow on the tuning chip twice to get there.
Can I tune my double 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.).