Online Mandolin Tuner
Tune your mandolin, mandola or octave mandolin with your microphone. Choose standard G D A E, cross tuning and more, with bright plucked reference tones.
- Free, no sign-up
- Mandolin family
- Private, on-device
Reference pitch (A4)
Hz
Lower it in noisy rooms
Press Start tuning, then play a string
0/4 tuned
Standard notes
A4 = 440 Hz| String | Note | Frequency |
|---|---|---|
| 4 | G3 | 196.00 Hz |
| 3 | D4 | 293.66 Hz |
| 2 | A4 | 440.00 Hz |
| 1 | E5 | 659.26 Hz |
Tuning in pairs
The mandolin is tuned G D A E like a violin, but every note is a pair of strings, called a course. Tune each string of a course separately, so the pair sounds like one clean, shimmering note.
Keyboard shortcuts
- Space Start or stop the microphone
- 1–9 Play a string’s reference note
- M Switch Auto / Manual mode
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Start the tuner
Press Start tuning and allow access to the microphone. Hold your mandolin 20–50 cm from the mic.
-
Play one string
Pluck one string and let it ring. Auto mode shows the closest string. To stay on one string, switch to Manual.
-
Adjust the tuning machine
If the needle is on the left, tighten the string to raise the pitch. If it is on the right, loosen it. Stop when the needle is in the middle and turns green.
Frequently asked questions
How is a mandolin tuned?
G3 D4 A4 E5, the same as a violin. Each note is a course of two strings tuned to exactly the same pitch.
How do I tune the string pairs?
Tune one string of the pair, mute it, then tune its partner. When both match perfectly, the pair sounds like a single, shimmering note.
What is a mandola?
It is a larger mandolin tuned C G D A, a fifth lower, like a viola. See mandola tuning.
All mandolin tunings
Mandolin family
More tuners
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- Viola Tuner C G D A, a fifth below the violin. C G D A
- Cello Tuner C G D A, an octave below the viola. C G D A
- Double Bass Tuner Upright bass in orchestral and solo tuning. E A D G
- Banjo Tuner Open G, double C, sawmill, tenor and Irish tenor. G D G B D
- Chromatic Tuner Any instrument or voice, with B♭/E♭/F transposition.
Music tools
- Metronome Accurate online metronome with accents and subdivisions.
- Tone Generator Play any frequency from 20 Hz to 20 kHz.
- Tuning Fork 415, 432, 440, 442 and 444 Hz forks.
- Pitch Detector See the exact note and frequency you play. C
- Custom Tuning Tuner Build any tuning with 3 to 12 strings. E A D G B E
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