SIESTA AUDIO

โ† Free music tools

Guitar tunings chart and tuning reference

By GlenยทPitch ยท Free toolยทFree, runs in your browserยทUpdated 2026
โ€“Press start and play one note
Uses your mic or audio interface. Nothing is recorded or sent anywhere.
Reference pitch

A4 at 440 Hz.

Tunings you can hear

Click a string to hear it. With the tuner running, the string you are closest to lights up.

Standard tuning is E2 A2 D3 G3 B3 E4: 82.41, 110.00, 146.83, 196.00, 246.94 and 329.63 Hz, with A4 at 440 Hz. A bass in standard is an octave below the guitar's bottom four strings: E1 A1 D2 G2.

Reference pitches

Guitar tunings

Guitar, low string first
TuningLow โ†’ highHz at A440
StandardE2 A2 D3 G3 B3 E482.41 ยท 110.00 ยท 146.83 ยท 196.00 ยท 246.94 ยท 329.63
Half step down (Eโ™ญ)Jimi Hendrix, Stevie Ray Vaughan, Guns N' RosesEโ™ญ2 Aโ™ญ2 Dโ™ญ3 Gโ™ญ3 Bโ™ญ3 Eโ™ญ477.78 ยท 103.83 ยท 138.59 ยท 185.00 ยท 233.08 ยท 311.13
Drop Done-finger power chords on the low stringsD2 A2 D3 G3 B3 E473.42 ยท 110.00 ยท 146.83 ยท 196.00 ยท 246.94 ยท 329.63
D standarda whole step downD2 G2 C3 F3 A3 D473.42 ยท 98.00 ยท 130.81 ยท 174.61 ยท 220.00 ยท 293.66
Drop Cโ™ฏdrop D, a half step lowerDโ™ญ2 Aโ™ญ2 Dโ™ญ3 Gโ™ญ3 Bโ™ญ3 Eโ™ญ469.30 ยท 103.83 ยท 138.59 ยท 185.00 ยท 233.08 ยท 311.13
Drop Cheavy rock and metalC2 G2 C3 F3 A3 D465.41 ยท 98.00 ยท 130.81 ยท 174.61 ยท 220.00 ยท 293.66
C standarddoom and stonerC2 F2 Bโ™ญ2 Eโ™ญ3 G3 C465.41 ยท 87.31 ยท 116.54 ยท 155.56 ยท 196.00 ยท 261.63
Drop BB1 Fโ™ฏ2 B2 E3 Gโ™ฏ3 Cโ™ฏ461.74 ยท 92.50 ยท 123.47 ยท 164.81 ยท 207.65 ยท 277.18
B standarddoom, sludge, baritone guitarB1 E2 A2 D3 Fโ™ฏ3 B361.74 ยท 82.41 ยท 110.00 ยท 146.83 ยท 185.00 ยท 246.94
Drop Aas low as most six-strings goA1 E2 A2 D3 Fโ™ฏ3 B355.00 ยท 82.41 ยท 110.00 ยท 146.83 ยท 185.00 ยท 246.94
DADGADopen, modal, dronesD2 A2 D3 G3 A3 D473.42 ยท 110.00 ยท 146.83 ยท 196.00 ยท 220.00 ยท 293.66
Open Gslide and Keith Richards riffs (he takes the low string off)D2 G2 D3 G3 B3 D473.42 ยท 98.00 ยท 146.83 ยท 196.00 ยท 246.94 ยท 293.66
Open Dslide, folkD2 A2 D3 Fโ™ฏ3 A3 D473.42 ยท 110.00 ยท 146.83 ยท 185.00 ยท 220.00 ยท 293.66
Open EslideE2 B2 E3 Gโ™ฏ3 B3 E482.41 ยท 123.47 ยท 164.81 ยท 207.65 ยท 246.94 ยท 329.63
Open Cbig ringing chordsC2 G2 C3 G3 C4 E465.41 ยท 98.00 ยท 130.81 ยท 196.00 ยท 261.63 ยท 329.63
7-string standardB1 E2 A2 D3 G3 B3 E461.74 ยท 82.41 ยท 110.00 ยท 146.83 ยท 196.00 ยท 246.94 ยท 329.63

Going down more than a couple of steps, heavier strings keep the tension and the tuning stable. Detuned guitars also want less low end and more mids than you would expect, so they cut through rather than turning to mud.

Bass tunings

Bass, low string first
TuningLow โ†’ highHz at A440
Standard (4-string)E1 A1 D2 G241.20 ยท 55.00 ยท 73.42 ยท 98.00
5-stringB0 E1 A1 D2 G230.87 ยท 41.20 ยท 55.00 ยท 73.42 ยท 98.00
Drop DD1 A1 D2 G236.71 ยท 55.00 ยท 73.42 ยท 98.00
D standardD1 G1 C2 F236.71 ยท 49.00 ยท 65.41 ยท 87.31
Drop CC1 G1 C2 F232.70 ยท 49.00 ยท 65.41 ยท 87.31
C standardC1 F1 Bโ™ญ1 Eโ™ญ232.70 ยท 43.65 ยท 58.27 ยท 77.78

Tuning tips that actually help

Tuned down? Go further down.

Drown is a two-knob doom fuzz.

C standard and B standard were made for it. MURK brings up the fuzz and an octave-below sub together, DEPTH blooms the note into a drone, FREEZE holds it under you. Plug your guitar in and play it live in the browser. Bass player? Try La Bestia.

Play Drown live โ†’

Quick answers

How do I tune my guitar online?

Use the online guitar tuner: press Start, allow the microphone and play one open string. It finds the string and shows how many cents sharp or flat you are. The chromatic tuner on this page works too and shows the nearest note.

What are the frequencies of standard guitar tuning?

With A4 at 440 Hz: E2 82.41 Hz, A2 110.00 Hz, D3 146.83 Hz, G3 196.00 Hz, B3 246.94 Hz and E4 329.63 Hz.

What is A440?

A440 means the A above middle C is tuned to 440 vibrations per second. It is the international standard reference pitch (ISO 16), and almost all tuners and instruments default to it.

Should I tune to 432 Hz or 440 Hz?

Either works if the whole band and the session agree. 432 Hz is 31.8 cents lower than 440 Hz. There is no acoustic evidence that 432 is special; it is a taste choice. 440 is the standard, so it is the safe default when you will play with others or use samples.

What notes is drop D tuning?

Drop D is D2 A2 D3 G3 B3 E4: standard tuning with the low E string lowered a whole step to D.

Can I tune a bass with an online tuner?

Yes. This tuner reads down to the low B of a five-string (about 31 Hz). Built-in laptop and phone mics pick up very little at that range, so if the reading jumps around, play the 12th fret harmonic, which is the same note an octave higher.

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About the author. Glen is a BMI composer whose music has been placed on NBC, MTV, E!, Disney+, Hulu and Amazon. He builds the Siesta Audio plugins and these tools, which he uses on his own sessions. More about Glen.