Instrument Tuning Chart: Every Tuning with Notes and Hz

Name: TuneStand instrument tuning dataset
Creator: FusionStudios
License: https://creativecommons.org/licenses/by/4.0/

45 tunings across 12 instruments, with the target note, the MIDI number and the exact frequency for every single string. Every value is computed from the equal temperament formula, never transcribed, and the whole set is available as one JSON file under CC BY 4.0.

Tuning charts on the web almost always stop at the letter names. This one does not: the reason a tuning chart is useful is that it tells you what pitch to hit, and a pitch is a frequency. Every row below links through to a page with the string-by-string difference from standard tuning, in semitones and in hertz, plus a microphone tuner set to those exact targets.

6-string guitar · 21 tunings

Tuning	Notation	Category	Notes, low to high	Frequencies (Hz)
Standard	EADGBE	standard	E2 A2 D3 G3 B3 E4	82.41 · 110.00 · 146.83 · 196.00 · 246.94 · 329.63
Drop D	DADGBE	drop	D2 A2 D3 G3 B3 E4	73.42 · 110.00 · 146.83 · 196.00 · 246.94 · 329.63
Drop C	CGCFAD	drop	C2 G2 C3 F3 A3 D4	65.41 · 98.00 · 130.81 · 174.61 · 220.00 · 293.66
Drop B	BF#BEG#C#	drop	B1 F#2 B2 E3 G#3 C#4	61.74 · 92.50 · 123.47 · 164.81 · 207.65 · 277.18
Drop A	AEADF#B	drop	A1 E2 A2 D3 F#3 B3	55.00 · 82.41 · 110.00 · 146.83 · 185.00 · 246.94
Drop C sharp	C#G#C#F#A#D#	drop	C#2 G#2 C#3 F#3 A#3 D#4	69.30 · 103.83 · 138.59 · 185.00 · 233.08 · 311.13
Half step down	EbAbDbGbBbEb	lowered	D#2 G#2 C#3 F#3 A#3 D#4	77.78 · 103.83 · 138.59 · 185.00 · 233.08 · 311.13
Whole step down	DGCFAD	lowered	D2 G2 C3 F3 A3 D4	73.42 · 98.00 · 130.81 · 174.61 · 220.00 · 293.66
B standard	BEADF#B	lowered	B1 E2 A2 D3 F#3 B3	61.74 · 82.41 · 110.00 · 146.83 · 185.00 · 246.94
Open G	DGDGBD	open	D2 G2 D3 G3 B3 D4	73.42 · 98.00 · 146.83 · 196.00 · 246.94 · 293.66
Open G minor	DGDGBbD	open	D2 G2 D3 G3 A#3 D4	73.42 · 98.00 · 146.83 · 196.00 · 233.08 · 293.66
Open D	DADF#AD	open	D2 A2 D3 F#3 A3 D4	73.42 · 110.00 · 146.83 · 185.00 · 220.00 · 293.66
Open D minor	DADFAD	open	D2 A2 D3 F3 A3 D4	73.42 · 110.00 · 146.83 · 174.61 · 220.00 · 293.66
Open E	EBEG#BE	open	E2 B2 E3 G#3 B3 E4	82.41 · 123.47 · 164.81 · 207.65 · 246.94 · 329.63
Open E minor	EBEGBE	open	E2 B2 E3 G3 B3 E4	82.41 · 123.47 · 164.81 · 196.00 · 246.94 · 329.63
Open C	CGCGCE	open	C2 G2 C3 G3 C4 E4	65.41 · 98.00 · 130.81 · 196.00 · 261.63 · 329.63
Open A	EAEAC#E	open	E2 A2 E3 A3 C#4 E4	82.41 · 110.00 · 164.81 · 220.00 · 277.18 · 329.63
DADGAD	DADGAD	modal	D2 A2 D3 G3 A3 D4	73.42 · 110.00 · 146.83 · 196.00 · 220.00 · 293.66
Double drop D	DADGBD	drop	D2 A2 D3 G3 B3 D4	73.42 · 110.00 · 146.83 · 196.00 · 246.94 · 293.66
All fourths	EADGCF	regular	E2 A2 D3 G3 C4 F4	82.41 · 110.00 · 146.83 · 196.00 · 261.63 · 349.23
New standard tuning	CGDAEG	regular	C2 G2 D3 A3 E4 G4	65.41 · 98.00 · 146.83 · 220.00 · 329.63 · 392.00

All 6-string guitar tunings side by side

7-string guitar · 2 tunings

Tuning	Notation	Category	Notes, low to high	Frequencies (Hz)
Standard	BEADGBE	standard	B1 E2 A2 D3 G3 B3 E4	61.74 · 82.41 · 110.00 · 146.83 · 196.00 · 246.94 · 329.63
Drop A	AEADGBE	drop	A1 E2 A2 D3 G3 B3 E4	55.00 · 82.41 · 110.00 · 146.83 · 196.00 · 246.94 · 329.63

All 7-string guitar tunings side by side

4-string bass guitar · 4 tunings

Tuning	Notation	Category	Notes, low to high	Frequencies (Hz)
Standard	EADG	standard	E1 A1 D2 G2	41.20 · 55.00 · 73.42 · 98.00
Drop D	DADG	drop	D1 A1 D2 G2	36.71 · 55.00 · 73.42 · 98.00
Half step down	EbAbDbGb	lowered	D#1 G#1 C#2 F#2	38.89 · 51.91 · 69.30 · 92.50
Drop C	CGCF	drop	C1 G1 C2 F2	32.70 · 49.00 · 65.41 · 87.31

All 4-string bass guitar tunings side by side

5-string bass guitar · 2 tunings

Tuning	Notation	Category	Notes, low to high	Frequencies (Hz)
Standard	BEADG	standard	B0 E1 A1 D2 G2	30.87 · 41.20 · 55.00 · 73.42 · 98.00
Tenor (high C)	EADGC	raised	E1 A1 D2 G2 C3	41.20 · 55.00 · 73.42 · 98.00 · 130.81

All 5-string bass guitar tunings side by side

Soprano, concert or tenor ukulele · 3 tunings

Tuning	Notation	Category	Notes, low to high	Frequencies (Hz)
Standard reentrant	GCEA	standard	G4 C4 E4 A4	392.00 · 261.63 · 329.63 · 440.00
Low G	GCEA (linear)	lowered	G3 C4 E4 A4	196.00 · 261.63 · 329.63 · 440.00
D tuning	ADF#B	raised	A4 D4 F#4 B4	440.00 · 293.66 · 369.99 · 493.88

All soprano, concert or tenor ukulele tunings side by side

Baritone ukulele · 1 tuning

Tuning	Notation	Category	Notes, low to high	Frequencies (Hz)
Standard	DGBE	standard	D3 G3 B3 E4	146.83 · 196.00 · 246.94 · 329.63

5-string banjo · 4 tunings

Tuning	Notation	Category	Notes, low to high	Frequencies (Hz)
Open G	gDGBD	standard	G4 D3 G3 B3 D4	392.00 · 146.83 · 196.00 · 246.94 · 293.66
Double C	gCGCD	open	G4 C3 G3 C4 D4	392.00 · 130.81 · 196.00 · 261.63 · 293.66
Sawmill (mountain modal)	gDGCD	modal	G4 D3 G3 C4 D4	392.00 · 146.83 · 196.00 · 261.63 · 293.66
Open D	f#DF#AD	open	F#4 D3 F#3 A3 D4	369.99 · 146.83 · 185.00 · 220.00 · 293.66

All 5-string banjo tunings side by side

Mandolin · 2 tunings

Tuning	Notation	Category	Notes, low to high	Frequencies (Hz)
Standard	GDAE	standard	G3 D4 A4 E5	196.00 · 293.66 · 440.00 · 659.26
Cross tuning GDAD	GDAD	modal	G3 D4 A4 D5	196.00 · 293.66 · 440.00 · 587.33

All mandolin tunings side by side

Violin · 2 tunings

Tuning	Notation	Category	Notes, low to high	Frequencies (Hz)
Standard	GDAE	standard	G3 D4 A4 E5	196.00 · 293.66 · 440.00 · 659.26
Cross tuning AEAE	AEAE	open	A3 E4 A4 E5	220.00 · 329.63 · 440.00 · 659.26

All violin tunings side by side

Viola · 1 tuning

Tuning	Notation	Category	Notes, low to high	Frequencies (Hz)
Standard	CGDA	standard	C3 G3 D4 A4	130.81 · 196.00 · 293.66 · 440.00

Cello · 1 tuning

Tuning	Notation	Category	Notes, low to high	Frequencies (Hz)
Standard	CGDA	standard	C2 G2 D3 A3	65.41 · 98.00 · 146.83 · 220.00

Double bass · 2 tunings

Tuning	Notation	Category	Notes, low to high	Frequencies (Hz)
Standard (orchestral)	EADG	standard	E1 A1 D2 G2	41.20 · 55.00 · 73.42 · 98.00
Solo tuning	F#BEA	raised	F#1 B1 E2 A2	46.25 · 61.74 · 82.41 · 110.00

All double bass tunings side by side

Use the data

The whole table above is one file: /api/tunings.json. No key, no registration, no rate limit, CORS open to every origin. It is licensed CC BY 4.0, which means you may use it anywhere including commercially, as long as you credit it: Data from TuneStand (https://tunestand.com). The dataset page has the schema, a curl example and the changelog.

What the categories mean

Standard: the reference tuning the instrument is normally sold and taught in. Everything else on this page is measured against it.
Drop: only the lowest string is lowered, usually a whole step, which turns the bottom three strings into a one-finger power chord.
Open: the open strings together sound a chord, so a straight finger across any fret gives that chord again. This is what slide playing is built on.
Modal: the open strings sound a chord with no third, so it is neither major nor minor and stays ambiguous until you fret it.
Lowered and raised: every string moves by the same interval, so the intervals between strings, and therefore every shape, are unchanged.
Regular: every pair of adjacent strings is the same interval apart, with no exception, which makes the fretboard fully symmetrical.

Frequencies on this page are computed at build time from twelve tone equal temperament with A4 = 440 Hz, using the twelfth root of two (about 1.059463) per semitone. Nothing is typed in by hand. See the full method and sources. Maintained by FusionStudios. Last reviewed: 5 August 2026.