Bass tuning · C G C F
Bass Drop C tuner.
C G C F: String 4 dropped to C1. Tune with your mic or by ear, at A4 = 440 or any pitch you need.
Tuner · Any tuning
Tune your 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…
C G C F · Drop D shape · −2 st
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
tab: D
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
Drop C
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.
Bass · Drop tuning
About Bass Drop C
D Standard with String 4 dropped a whole step, to C1: C G C F. Drop tunings make a power chord from one finger across the lowest three strings, so heavy riffs get easier to play.
Bass Drop C matches guitars in Drop C. String 4 goes down to C1, 32.70 Hz, which phone mics hear only faintly.
Also written: CGCF
How to get there from standard
- String 4: lower 2 whole steps (E1 → C1)
- String 3: lower a whole step (A1 → G1)
- String 2: lower a whole step (D2 → C2)
- String 1: lower a whole step (G2 → F2)
Quicker from D Standard: lower String 4 a whole step (D1 → C1).
4 strings
Notes and frequencies
| String | Note | A = 440 | A = 432 | A = 442 |
|---|---|---|---|---|
| 4 | C1 | 32.70 | 32.11 | 32.85 |
| 3 | G1 | 49.00 | 48.11 | 49.22 |
| 2 | C2 | 65.41 | 64.22 | 65.70 |
| 1 | F2 | 87.31 | 85.72 | 87.70 |
The tuner on this page works at any A4 from 300 to 600 Hz, and can shift the whole tuning by half steps or fine cents.
Low notes. The lowest string here is C1 at 32.70 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.
Measured
How the tuner hears C1
Bass Drop C goes down to C1 on String 4, 32.70 Hz. A phone mic hears C1 faintly: in our phone-mic model its fundamental arrives 19 dB quieter. Read from its overtones, C1 stayed within 2 ¢.
String tension
Strings and tension
String 4: about 37% less tension. Strings 3–1: about 21% less tension (approx., same strings, same scale length).
To keep the feel of a 45–105 set at standard pitch, try about 50–135 (approx.: string makers' charts differ, and many players simply like it looser).
Check string tension → String by string, with your own set and scale length.
Neighboring tunings
Higher tunings first. Each rung moves every string of Bass Drop C by a half step; in the tuner, the ◂ ▸ arrows on the tuning chip do the same.
- Drop DLow string down to D
- Drop C♯Drop D, 1 half step lower. Notes: C sharp G sharp C sharp F sharp
- Drop CThis pageDrop D, 2 half steps lower. Notes: C G C F
- Drop BDrop D, 3 half steps lower. Notes: B F sharp B E
- Drop B♭Drop D, 4 half steps lower. Notes: B flat F B flat E flat
Questions
What are the notes of Bass Drop C?
From String 4 to String 1: C1 G1 C2 F2. At A4 = 440 Hz the lowest string is 32.70 Hz and the highest is 87.31 Hz.
How is Bass Drop C different from C Standard?
C Standard lowers all four strings 2 whole steps (C F B♭ E♭). Bass Drop C takes only String 4 that low; the other strings stay at D Standard (G C F).
Do I need heavier strings for Bass Drop C?
String 4: about 37% less tension. Strings 3–1: about 21% less tension (approx.). To keep the feel of a 45–105 set at standard pitch, try about 50–135 (approx.: string makers' charts differ, and many players simply like it looser).