Free · in your phone's browser · nothing uploaded
7-string guitar tuner
A free 7-string guitar tuner in your phone's browser: B E A D G B E, drop A, or the Brazilian low C of the violão de sete cordas, one string at a time. Nothing uploaded.
Seven strings, the low one is the one that matters. Mika asks for it first.The microphone closes when you stop, when all is in tune, or after half a minute of quiet. Nothing is recorded.
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The strings in Hz
Standard (low B)
| String | Note | Hz |
|---|---|---|
| 7th | B1 | 61.74 |
| 6th | E2 | 82.41 |
| 5th | A2 | 110.00 |
| 4th | D3 | 146.83 |
| 3rd | G3 | 196.00 |
| 2nd | B3 | 246.94 |
| 1st | E4 | 329.63 |
Other tunings
| Tuning | Notes | Hz |
|---|---|---|
| Drop A | A1 E2 A2 D3 G3 B3 E4 | 55.0 · 82.4 · 110.0 · 146.8 · 196.0 · 246.9 · 329.6 |
| Brazilian (low C) | C2 E2 A2 D3 G3 B3 E4 | 65.4 · 82.4 · 110.0 · 146.8 · 196.0 · 246.9 · 329.6 |
At A4 = 440 Hz; the reference switch above moves them all.
How to tune
A seven-string guitar is a six-string with one more string below: B E A D G B E, the B a fourth under the low E at 61.7 Hz. Metal players drop it further to A for drop A; the switch above handles both.
In Brazil the seven-string is a choro and samba instrument, the violão de sete cordas, and its seventh string is traditionally tuned to C, a third below the E, for the bass runs called baixarias; that's the third switch. Whatever the note, the low string needs a heavier gauge than a six-string set has, or it flaps and reads flat.
Then play something
The notes you tuned can go into Brumm as a short melody over a beat. Hum a line on top and it becomes an instrument.
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