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7-String Guitar Tuner: B E A D G B E.

The familiar six, with a low B underneath.

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

7-string standardB E A D G B E
REFERENCE TONEA4 = 440 Hz
B1
B · 6th string61.74 Hz

Choose a string below to hear its note.

PLAY A STRINGThickest Thinnest
7 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.
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By ear: click a note, match your string, then move to the next. Keyboard: 1–6 to play · Esc to stop

KNOW YOUR TUNING

7-string standard: B E A D G B E

Tune the seven open strings from low B to high E. The upper six match standard six-string tuning. Use manual string selection if the tuner hears a harmonic instead of the fundamental.

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

7-string standard notes and frequencies from thickest to thinnest
StringNoteHzFrom standard
7 · thickestB161.74Use the labelled target
6E282.41Use the labelled target
5A2110.00Use the labelled target
4D3146.83Use the labelled target
3G3196.00Use the labelled target
2B3246.94Use the labelled target
1 · thinnestE4329.63Use the labelled target

THE TUNEGUITAR GUIDE

Understand 7-string standard

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

The upper six retain their familiar map

The added B1 sits below E2 A2 D3 G3 B3 E4. Standard six-string shapes remain available on strings 6 through 1, while string 7 extends the bass. Tune the upper six first if that helps orient your hands, then add the low B. Always confirm the numbered button before moving a peg.

Two Bs are two octaves apart

The seventh-string B1 and second-string B3 share a note name but differ by two octaves. Their frequencies are about 61.74 and 246.94 Hz. Hearing B on the display is not enough to select the correct string. Muting the other six also stops sympathetic resonance from confusing an automatic detector.

Drop A changes only the new bass

For seven-string Drop A, lower the seventh string B1 to A1 and preserve the upper six. Do not select the six-string Drop A preset: it has a different upper-string sequence and no high E. Save profiles with '7-string' in their names so instrument changes do not silently load an incompatible set of targets.

Check the register of every target

Individual strings at A4 = 440 Hz
String / courseNoteHz
7B161.74
6E282.41
5A2110.00
4D3146.83
3G3196.00
2B3246.94
1E4329.63

The order follows this preset, not an instruction to rearrange the physical strings. On paired courses, identify the main string and its partner before plucking. A single-note detector cannot prove that two strings sounding together are independently correct.

READY FOR THE FIRST CHORD

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GOOD TO KNOW

Questions about 7-string standard

Which string is added on a seven-string guitar?

In this standard setup, the seventh string is a low B1 below the usual low E2. Other seven-string tunings use different notes.

Can I check the upper six strings with the normal standard preset?

Their targets are the familiar E2 A2 D3 G3 B3 E4, but that preset omits the low B1. Use the seven-string preset for a complete pass with matching string numbers, and mute the low B when isolating the others.

Why does the tuner sometimes show B2 on the lowest string?

B2 is an octave above the intended B1 and may be a strong harmonic of the low string. Pluck gently, mute adjacent strings and try a different microphone position. Do not tighten the string toward B2 merely to match a prominent reading.

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Last updated 13 September 2026.

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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.

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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.

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