Online Mandolin Tuner

Use this free online mandolin tuner to tune your mandolin. This is for the standard GDAE mandolin tuning. Mandolins have strings that are in pairs, which are tuned to exactly the same note. These pairs of strings create a cool chorus-like effect, very similar to the sound of the 12 string guitar.

Mandolin Tuner
String 4	String 3	String 2	String 1	Alternative Tunings Tone Natural Beep Sharps/Flats ♯ ♭ Repeat Yes No Volume
D4	A4	E5	B5
C♯4	G♯4	D♯5	A♯5
C4	G4	D5	A5
B3	F♯4	C♯5	G♯5
A♯3	F4	C5	G5
A3	E4	B4	F♯5
G♯3	D♯4	A♯4	F5
G3	D4	A4	E5
F♯3	C♯4	G♯4	D♯5
F3	C4	G4	D5
E3	B3	F♯4	C♯5
D♯3	A♯3	F4	C5
D3	A3	E4	B4
C♯3	G♯3	D♯4	A♯4
C3	G3	D4	A4
G	D	A	E

If there is no sound or the tuner above does not work, try updating your web browser to the latest version. If it still does not work, please try our older Online Mandolin Tuner that runs on Adobe Flash.

How to use this tuner: Click on the note for the string you want to tune and then turn the tuning pegs on your mandolin to match it up with the note that is being played. For best results adjust the volume on your computer until it has the same volume as your mandolin.

Comments (88)

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Tuning

The C-G-D-A tuning is perfect for tuning my tenor banjo.

by Charlie on Apr 10, 2025 | 11:12 AM

Found a very old mandolin and snapped two strings while tuning it lmao (please help me)

by Help me on Apr 17, 2024 | 3:29 PM

Found a very old mandolin and snapped two strings while tuning it lmao (please help me)

by Help me on Apr 16, 2024 | 7:11 PM

eel

i showed my cousinlaw this and then we got married at last a search is over

by diamater on Feb 10, 2024 | 5:44 AM

eel

i showed my cousinlaw this and then we got married at last a search is over

by diamater on Feb 1, 2024 | 11:51 AM

eel

i showed my cousinlaw this and then we got married at last a search is over

by diamater on Feb 1, 2024 | 7:19 AM

springy one

my cousin-in-law showed me this tuner and then we got married thanks

by buhboinglad on Feb 1, 2024 | 6:02 AM

At last a search for a versatile online Mandolin player is over. Fabulous Tuner. So easy and handy to use

by chandrashekhar bhagwat on Aug 29, 2023 | 2:07 PM

At last a search for a versatile online Mandolin player is over. Fabulous Tuner. So easy and handy to use

by chandrashekhar bhagwat on Aug 2, 2023 | 3:01 PM

Easy to use. Better than other tuners on line. Am bookmarking this one. Thanks!

by Chuck on Feb 3, 2023 | 10:09 PM

At last a search for a versatile online Mandolin player is over. Fabulous Tuner. So easy and handy to use

by chandrashekhar bhagwat on Jan 3, 2023 | 11:19 AM

At last a search for a versatile online Mandolin player is over. Fabulous Tuner. So easy and handy to use

by chandrashekhar bhagwat on Jan 3, 2023 | 11:19 AM

At last a search for a versatile online Mandolin player is over. Fabulous Tuner. So easy and handy to use

by chandrashekhar bhagwat on Dec 27, 2022 | 12:10 PM

At last a search for a versatile online Mandolin player is over. Fabulous Tuner. So easy and handy to use

by chandrashekhar bhagwat on Dec 27, 2022 | 12:10 PM

At last a search for a versatile online Mandolin player is over. Fabulous Tuner. So easy and handy to use

by chandrashekhar bhagwat on Dec 12, 2022 | 4:57 PM

i

must

by say on Dec 9, 2022 | 7:32 AM

i

say

by must on Dec 9, 2022 | 7:32 AM

must

say

by i on Dec 9, 2022 | 7:32 AM

must

say

by i on Dec 9, 2022 | 7:31 AM

At last a search for a versatile online Mandolin player is over. Fabulous Tuner. So easy and handy to use

by chandrashekhar bhagwat on Nov 22, 2022 | 1:30 PM

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