GuitarTuner.online

6-String Guitar tuner – All Fourths

E-A-D-G-C-F · Alternative

Also known as Perfect Fourths

–
Microphone off
··· Hz

Press “Start tuner” – the browser will ask for microphone access. Sound is analysed on this device and never uploaded.

This free online tuner listens through your microphone and shows how close each string of your 6-String Guitar is to All Fourths tuning (E-A-D-G-C-F). Play a string, watch the needle, and turn the peg until the meter glows green. If you prefer tuning by ear, tap any string card to hear its reference tone.

About All Fourths tuning

Compared with Standard E, All Fourths moves 2 strings. Every change is upward, the largest by 1 semitone, so the strings pull tighter than in Standard E.4 strings stay exactly where they were.

How All Fourths differs from Standard E, string by string.
StringStandard EAll FourthsChange
5B3C4up 1 semitone
6E4F4up 1 semitone

Played open, the strings sound E-A-D-G-C-F – from E2 at the bottom to F4 at the top, a span of 2 octaves and 1 semitone. Step by step across the neck the intervals are a fourth, a fourth, a fourth, a fourth, a fourth, and that is what decides how chord shapes fall under the hand.

All Fourths removes the one irregularity in standard tuning: the major third between the G and B strings becomes a fourth like everything else. Every scale shape and arpeggio then repeats identically across all six strings.

Jazz players are its main constituency – Stanley Jordan and Allan Holdsworth among them – because single-line playing and extended chords become far more systematic. The trade is real: the standard open chords and the CAGED shapes built around that third stop working.

The strings are pulled above their normal pitch, so a lighter set reduces the risk of breaking a string or over-loading the neck.

History

Where the All Fourths tuning comes from

All-fourths tuning removes the one irregularity of standard tuning – the major third between G and B – so that every shape can be moved anywhere on the neck, just as on the bass guitar. The jazz guitarist Stanley Jordan, famous for his two-handed tapping, is its best-known champion, and many modern jazz and fusion players, such as Tom Quayle, have followed.

History of the instrument: 6-String Guitar →

Other 6-String Guitar tunings

Standard

Standard E E-A-D-G-B-EHalf Step Down (Eb) D#-G#-C#-F#-A#-D#Whole Step Down (D) D-G-C-F-A-DB Standard B-E-A-D-F#-BPlus 1 (F) F-A#-D#-G#-C-FPlus 2 (F#) F#-B-E-A-C#-F#

Drop

Drop D D-A-D-G-B-EDouble Drop D D-A-D-G-B-DDrop C# C#-G#-C#-F#-A#-D#Drop C C-G-C-F-A-DDrop B B-F#-B-E-G#-C#Drop A A-E-A-D-F#-BDrop G# G#-D#-G#-C#-F-A#Drop G G-D-G-C-E-ADrop F# F#-C#-F#-B-D#-G#Drop E E-B-E-A-C#-F#

Open

Open C C-G-C-G-C-EOpen D D-A-D-F#-A-DOpen Dm D-A-D-F-A-DOpen E E-B-E-G#-B-EOpen Em E-B-E-G-B-EOpen F C-F-C-F-A-FOpen G D-G-D-G-B-DOpen Gm D-G-D-G-A#-DOpen A E-A-C#-E-A-EOpen A 2 E-A-E-A-C#-EOpen Am E-A-E-A-C-EOpen B B-F#-B-F#-B-D#CGDGBD (Open G Low C) C-G-D-G-B-DFACGCE (Fmaj7) F-A-C-G-C-EWahine (G) D-G-D-F#-B-D

Modal

DADGAD (D Modal) D-A-D-G-A-DG Modal D-G-D-G-C-DOrkney C-G-D-G-C-D

Alternative

Double Daddy D-A-D-D-A-DAll Fourths E-A-D-G-C-FNew Standard (NST) C-G-D-A-E-GNashville (High Strung) E-A-D-G-B-EEADF#BE E-A-D-F#-B-EOstrich D-D-D-D-D-D

Chords for this tuning

CGDAEFAll 6-String Guitar chords →
How do I tune my 6-String Guitar to All Fourths?

Allow microphone access, pluck a string, and the tuner will detect it automatically. The needle shows whether the string is flat or sharp – adjust until the reading is within ±5 cents (E-A-D-G-C-F).

Which notes are used in All Fourths tuning?

All Fourths tuning for 6-String Guitar uses the notes E-A-D-G-C-F, listed from the lowest string to the highest.

Can I tune without a microphone?

Yes. Every string card plays a reference tone – tap it and match your string to the sound by ear.