Classical Guitar Tuner
Tune a nylon-string classical or flamenco guitar with your microphone, or by ear with plucked reference notes. Standard E A D G B E, plus drop D for classical pieces.
- Free, no sign-up
- Tune by ear too
- Drop D for classical pieces
- Private, on-device
Reference pitch (A4)
Hz
Lower it in noisy rooms
Press Start tuning, then play a string
0/6 tuned
Standard notes
A4 = 440 Hz| String | Note | Frequency |
|---|---|---|
| 6 | E2 | 82.41 Hz |
| 5 | A2 | 110.00 Hz |
| 4 | D3 | 146.83 Hz |
| 3 | G3 | 196.00 Hz |
| 2 | B3 | 246.94 Hz |
| 1 | E4 | 329.63 Hz |
Nylon strings stretch
Classical guitars use the same notes as any guitar, E A D G B E, but nylon strings keep stretching for days after you put them on. You will need to retune often until they settle.
Many classical pieces use drop D, which lowers only the 6th string. Pick it from the menu and the tuner switches to it.
Keyboard shortcuts
- Space Start or stop the microphone
- 1–9 Play a string’s reference note
- M Switch Auto / Manual mode
-
Start the tuner
Press Start tuning and allow access to the microphone. Hold your classical guitar 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 peg
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
Is classical guitar tuning different from acoustic guitar tuning?
No. Classical, acoustic and electric guitars all use standard tuning: E2 A2 D3 G3 B3 E4. The only difference is what the strings are made of.
Why does my classical guitar go out of tune so quickly?
New nylon strings stretch for several days and react to changes in temperature and humidity. Tune up slowly and retune often until the strings settle.
Which tunings are common in classical music?
Most pieces use standard tuning. Many others use drop D, with the 6th string lowered to D. Some pieces also lower the 5th string to G.
All guitar tunings
Standard & down-tuned
Drop
Open
Alternate
7-string
8-string
12-string & guitalele
More tuners
- Bass Tuner 4, 5 and 6-string bass, from drop D to BEAD. E A D G
- Ukulele Tuner Soprano, concert, tenor and baritone ukulele. G C E A
- Violin Tuner G D A E with bowed reference tones. G D A E
- 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
- Mandolin Tuner Mandolin, mandola and octave mandolin. G D A E
- 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
- Tune Guitar by Ear Repeating reference notes for every string. E A D G B E