Standard seven-string tuning is B1 E2 A2 D3 G3 B3 E4, low to high. The top six strings remain ordinary E standard; the seventh string adds B1 through D#2 below the old low E.
Use the custom tuner, select seven strings, and enter the octaves shown below.
Standard 7-string guitar tuning notes and frequencies
| String | Note | Target Hz | What changed from a 6-string |
|---|---|---|---|
| 7, lowest | B1 | 61.74 | new lower string |
| 6 | E2 | 82.41 | normal low E |
| 5 | A2 | 110.00 | unchanged |
| 4 | D3 | 146.83 | unchanged |
| 3 | G3 | 196.00 | unchanged |
| 2 | B3 | 246.94 | unchanged |
| 1, highest | E4 | 329.63 | unchanged |
This is why standard is the best first tuning for a new seven-string. It preserves the familiar fretboard and adds exactly five lower pitches: B, C, C#, D, and D#. Strandberg's extended-range guide makes the same distinction.
How to tune a 7-string guitar cleanly
- Configure B1 E2 A2 D3 G3 B3 E4 in the custom tuner.
- Mute six strings and pluck one string near the bridge.
- Tune upward into each note, starting with B1.
- Wait about half a second after the pick attack before judging the reading.
- Make a second pass after all seven strings are at pitch.
- On a floating tremolo, keep cycling until two consecutive passes need no correction.
If a phone microphone cannot hold B1, play the 12th-fret harmonic on the seventh string. It is B2, exactly one octave higher, so it tracks the same open-string tension while giving the microphone a clearer signal. Confirm the open string once the tuner stabilizes.
7-string standard tuning string gauges
Gauge advice without scale length and tension is mostly noise. A useful baseline is the low B's actual tension:
| Starting point | Published low-B tension | Use it when |
|---|---|---|
| .010-.059 seven-string set | 15.9 lb at B1 | normal pick attack; familiar 10s feel |
| .011-.064 seven-string set | 18.8 lb at B1 | firmer low end; heavier overall feel |
Those figures come from D'Addario's charts for its .010-.059 set and .011-.064 set.
Our preferred target is roughly 16-19 lb on the low B, then matching the feel of the other wound strings. A longer 26.5-inch scale produces more tension than 25.5 inches with the same string and pitch, so do not automatically buy a thicker set for the longer guitar. Put the real scale length into D'Addario's tension calculator.
If only the B feels loose, replace only that gauge or build a custom set. Moving every string from 10s to 11s to fix one weak string makes the top six unnecessarily stiff.
B standard on 7-string vs 6-string guitar
These tunings share a lowest note but not the same interval map:
| Instrument | Low-to-high tuning | Result |
|---|---|---|
| 7-string standard | B E A D G B E | six-string E standard plus low B |
| 6-string B standard | B E A D F# B | every string shifted down a fourth |
The G string is the giveaway. If a seven-string tab says standard, use G3, not F#3. Tuning it to F# copies the top of six-string B standard and breaks familiar chord and scale shapes.
7-string guitar tuning problems
Low B reads sharp immediately after the pick
The pick is bending a loose string sharp. Read the sustained pitch, use less attack, or move toward a higher-tension low-B gauge. Tuning the settled note flat to compensate makes soft notes flat.
B1 is correct but the 12th fret is sharp
Compare the 12th-fret harmonic and fretted note. If the fretted note is sharp, lengthen the string at the saddle; if flat, shorten it. Recheck after every small movement with the intonation procedure.
Chords turn to mud when the seventh string rings
Do not let B1 ring under every six-string chord. The seventh string is an extension, not a permanent drone. Practice ordinary E, A, and D shapes while deliberately muting B1 with the fretting-hand thumb or fingertip.
A 5-minute seven-string orientation drill
Set the metronome to 60 BPM. Play B1-C2-C#2-D2-D#2 on frets 0-4, then play open E2. Repeat while saying the notes. This teaches the five new pitches without relearning the other 90% of the fretboard.
FAQ about standard seven-string tuning
Is standard seven-string tuning Drop A?
No. Standard is B E A D G B E. Drop A lowers only the seventh string to A1: A E A D G B E.
Can a normal guitar tuner hear B1?
A chromatic tuner with a low enough detection range can. If the room or microphone masks 61.74 Hz, use the 12th-fret B2 harmonic and mute every other string.
Should a 25.5-inch seven-string use a .064 low B?
Only if you want the firmer feel. A .059 is a credible baseline; choose by measured tension, attack, and intonation rather than scale-length folklore.
