tuneguitar.

LESS TUNING. MORE PLAYING.

Online guitar tuner.

The familiar six. Your starting point for almost everything.

Tune open strings first. Fit your capo, then switch on “Check with capo on”.

StandardE A D G B E
REFERENCE TONEA4 = 440 Hz
E2
E · 6th string82.41 Hz

Choose a string below to hear its note.

PLAY A STRINGThickest Thinnest
6 strings · 3 seconds each
Sound & advanced settings

A gentle ping follows a steady note within 5 cents. Its volume follows the sound slider. Microphone audio stays on your device.

Check your intonation.

Compare one open string with the same string pressed at fret 12. Remove your capo and mute the other strings.

  1. 1. Tune and measure the open string
  2. 2. Press at fret 12 and measure again

Press just behind fret 12 with normal pressure. Do not play a harmonic. Repeat the comparison to confirm the result.

Check your six strings.

Press start, then sweep gently across all six open strings, from thickest to thinnest. Let them ring together.

Experimental: overlapping notes can be unclear. Select any result to measure that string alone in this window.

Check a known reference.

Play a steady reference from another device or instrument whose frequency you know. Enter that frequency below.

This compares your input with the reference you supply. It is not a certified calibration. Only numbers are saved, never audio.
Acoustic, electric & classicalFree. No download. Just play.

By ear: click a note, match your string, then move to the next. Keyboard: 1–6 to play · Esc to stop

KNOW YOUR TUNING

Standard: E A D G B E

Tune the open strings with the capo off. Start at the thickest string, work across, then give all six one more check.

The table shows the open-string setup at A4 = 440 Hz. For capo pitches, use the capo controls above.

Standard notes and frequencies from thickest to thinnest
StringNoteHzFrom standard
6 · thickestE282.41E2
5A2110.00A2
4D3146.83D3
3G3196.00G3
2B3246.94B3
1 · thinnestE4329.63E4

THE TUNEGUITAR GUIDE

Choose the right check before you turn a peg

TuneGuitar guide · Updated 6 October 2026 · How we prepare our guides

Start with the intended notes

The tuner is the working surface; the guides below explain the decisions behind it. Choose standard or an alternate preset, compare the complete string sequence with your arrangement, and remove your capo for the open-string pass. The same lowest note can belong to several different tunings.

Match the symptom to the tool

What are you trying to find out?
QuestionWhere to start
Do I have the right open notes?Two-pass tuning routine
Why is the reading jumping?Microphone diagnosis
Why are fretted notes different?Intonation comparison
What does the number mean?Cents, hertz and calibration
How to tune a guitar: a repeatable two-pass routineWhy your guitar tuner jumps, hears nothing or finds the wrong octaveCents, hertz and calibration: what TuneGuitar's numbers mean

A DIFFERENT STARTING POINT

Find your tuning.

StandardE A D G B EDrop DD A D G B EDADGADD A D G A DOpen GD G D G B DOpen DD A D F♯ A DHalf-step downE♭ A♭ D♭ G♭ B♭ E♭Drop CC G C F A DD standardD G C F A DDrop C♯C♯ G♯ C♯ F♯ A♯ D♯Drop AA E A D F♯ BOpen AE A E A C♯ EOpen EE B E G♯ B EOpen CC G C G C EOpen D minorD A D F A DOpen E minorE B E G B EC standardC F B♭ E♭ G CC♯ standardC♯ F♯ B E G♯ C♯Drop BB F♯ B E G♯ C♯Baritone B standardB E A D F♯ BBaritone A standardA D G C E A7-string standardB E A D G B E7-string Drop AA E A D G B E8-string standardF♯ B E A D G B E12-string standardE E A A D D G G B B E E

READY FOR THE FIRST CHORD

Tune for a song.

Search 100 song setups by title or artist.

Browse all 100 songs →

GOOD TO KNOW

Guitar tuning FAQs

Why check the strings twice?

Changing string tension can slightly shift the other strings. A second pass catches the small changes and gives you a more settled guitar.

Which tuning should I choose for my guitar?

Start with Standard for a six-string guitar unless your arrangement specifies something else. TuneGuitar lists the complete string sequence for each preset. Check every target, not just the lowest note: Drop D and D standard both start on D but require different notes on the other strings.

How do I tune if I cannot use the microphone?

Select Tune by ear, choose a string and listen to its reference tone. Match the corresponding guitar string, then stop that tone before moving on. Repeat keeps the reference playing; Play all strings lets you hear the complete sequence. This gives you a listening reference, but it cannot measure your guitar without microphone input.

Why does the note jump when I pluck a string?

Mute the other strings and use a gentle, steady pluck. Let the initial attack settle before turning a peg. If the reading jumps to the same note an octave higher, the microphone may be detecting a harmonic. Try another device position and check the target octave as well as the note letter.

Should I tune before or after fitting a capo?

Tune the open strings first with the capo removed. Fit the capo, select its fret and enable Check with capo on to compare the raised pitches. If fitting it makes notes sharp, check its position and pressure before adjusting the guitar. Do not raise the uncapped strings to the capo targets.

Does TuneGuitar record my playing or save my guitar settings?

Microphone audio is analysed in your browser and is not recorded, saved or uploaded by TuneGuitar. Stop listening releases the microphone. Guitar profiles and setlists are saved separately in this browser on this device. A share link includes the setup information you choose to share; it does not contain a recording.

Privacy & cookies

Your guitar audio is processed entirely on your device. We do not record it, store it or upload it.

Saved guitars, setlists and your ping preference are stored in this browser on this device. You can delete each guitar in “My guitars”. Clearing site data removes these settings and the offline cache. The offline cache contains the tuner’s pages and the code that generates reference tones, never microphone recordings.

Google Analytics (G-G2RC12Y00X) loads only after you accept analytics cookies. It measures visits and usage; microphone audio is never sent to Google. Use Cookie settings in the footer to accept or withdraw consent. Analytics cookies and your choice last up to six months. Advertising uses separate consent settings. The hosting service may process routine connection data to deliver and secure the site.

This site includes the Google AdSense publisher tag. It contacts Google to connect this site to AdSense and load any consent messages published for the site. Advertising is subject to Google’s review and the publisher’s ad and consent settings. Analytics consent does not grant advertising consent. When Google’s advertising consent message is available, use Ad privacy settings in the footer to revisit it. No microphone audio is shared with AdSense.

Last updated 13 September 2026.

Read the full privacy policy

My guitars

Save the current strings, capo setup, reference sound and concert pitch for your guitar. No account needed.

Your guitars will appear here.

Saved only in this browser. Up to 20 guitars.

Share this tuning

This link includes your strings, capo, reference pitch and tuning mode.

Copy the link, then paste it into a message.

Keep your tuner close.

Use your browser’s menu and choose Install app or Add to Home Screen. On iPhone or iPad, open this page in Safari, tap Share, then Add to Home Screen.

Once the tuner shows “Ready offline”, reference tones and microphone tuning work without a connection. Microphone permission is still required.

Your own tuning.

Enter 4 to 12 notes in physical string order, from the thickest side. Include the octave, for example E2 A2 D3 G3 B3 E4. Use notes suitable for your strings and instrument.

Save your setup in My guitars, or share its link.

Your setlists.

A setlist keeps songs in playing order, with the tuning and capo for each one. Open a song’s setup in the tuner when you are ready to play.

Create your first setlist

Give your practice session a name, then add songs.

Create a setlist to start adding songs.

    Saved in this browser. Up to 10 setlists with 30 entries each. Shared lists open for review before saving.

    Your lists stay on this device. Songs are not played automatically.

    Share a correction.

    Describe the guitar part or version, the correct tuning and a source. You can copy or share the report with the site owner. It is not submitted automatically.