Pitch Please Get the iPhone app Free online guitar tuner
Tune your guitar.Then play.
A free guitar tuner in your browser. Choose Standard, Drop D or DADGAD, play a reference tone, or let the microphone follow each open string.
No account or download needed. Sound starts only when you tap a note.
See the notes for every stringTurn on JavaScript to use the tuner and play reference tones.
Microphone audio is processed in your browser. Nothing is recorded or uploaded.
How to tune
- Choose your tuning. Standard guitar tuning is E2, A2, D3, G3, B3, E4, from the thickest string to the thinnest.
- Tap Start listening and allow microphone access. Move close to your device and mute the other strings so one note rings clearly.
- Pluck an open string and read its note and octave. A negative cents value means flat, a positive value means sharp. Adjust the tuning peg gradually toward the target note.
- Recheck every string after the first pass. Changing string tension can shift the strings you already tuned.
Notes and frequencies
The notes below run from string 6, the thickest string, to string 1, the thinnest. Frequencies use A4 = 440 Hz.
| String | Note | Hz |
|---|---|---|
| 6 | E2 | 82.41 |
| 5 | A2 | 110.00 |
| 4 | D3 | 146.83 |
| 3 | G3 | 196.00 |
| 2 | B3 | 246.94 |
| 1 | E4 | 329.63 |
| String | Note | Hz |
|---|---|---|
| 6 | D2 | 73.42 |
| 5 | A2 | 110.00 |
| 4 | D3 | 146.83 |
| 3 | G3 | 196.00 |
| 2 | B3 | 246.94 |
| 1 | E4 | 329.63 |
| String | Note | Hz |
|---|---|---|
| 6 | D2 | 73.42 |
| 5 | A2 | 110.00 |
| 4 | D3 | 146.83 |
| 3 | G3 | 196.00 |
| 2 | A3 | 220.00 |
| 1 | D4 | 293.66 |
Standard tuning
E, A, D, G, B, E is the usual starting point for a six-string guitar. The two E strings share a note name, but E2 and E4 are two octaves apart. Match the octave as well as the letter.
Drop D
From standard tuning, lower only the thickest string from E2 to D2, one whole tone. Leave the other five strings at A2, D3, G3, B3 and E4. Select Drop D above to hear the lower D reference.
DADGAD
From standard tuning, lower string 6 from E2 to D2, string 2 from B3 to A3, and string 1 from E4 to D4. Leave A2, D3 and G3 in place. The result is D2, A2, D3, G3, A3, D4.
Tuning questions
Does an online tuner work for acoustic and electric guitar?
It can hear an acoustic guitar directly. For an electric guitar, use an audible clean signal from an amplifier or a compatible audio input. Keep effects off while tuning, and let one string ring at a time.
Why does the tuner show the right letter but the string sounds wrong?
Check the octave number. D2 and D3 are different pitches even though both are D. Also check the selected tuning and mute other strings; overtones and background sound can confuse a microphone tuner.
Can I tune without microphone access?
Yes. Tap a note button to hear a reference tone and match it by ear. Reference tones do not use the microphone. Sound begins only when you tap a note.
Can I use Pitch Please on iPhone?
Yes. The iPhone app includes string targets, more alternate tunings and custom tunings, plus a metronome and other practice tools. All tools are free with ads. It requires iOS 18 or later and its interface is in English.
Keep practicing on iPhone
Keep string targets, more tunings and a metronome close at hand. Every tool is free with ads, with optional ad removal.
iPhone, iOS 18 or later, English interface.
