12 physical strings · 6 courses
Tune all 12 strings of a 12-string guitar
Work through every physical string—not just six note names—with traditional octave-first bass courses and two independently selectable members in each course.
Start tuning now
Private by design · no account · audio stays on this device
Live target±5 cents
E3·E2·A3·A2·D4·D3·G4·G3·B3·B3·E4·E4
FlatIn tuneSharp
Know the target
Traditional 12-string course order
The four lower courses place the thinner octave string first: E3/E2, A3/A2, D4/D3 and G4/G3. The B3/B3 and E4/E4 courses are unison pairs. tuner.love preserves that physical order across the selector, peg overlays and Auto traversal.
Tune each member separately while muting its partner. The active string and its exact tuning-peg silhouette glow blue while listening; a confirmed string turns green in the current Auto session.
Four clear steps
How to tune accurately
- 1Choose a course, then select the individual Oct, Main or Uni member you want to tune.
- 2Mute the neighboring member and pluck only the selected physical string.
- 3Adjust the matching peg until the reading remains inside the green ±5-cent zone.
- 4Continue until all twelve exact peg outlines are confirmed green.
Reference: A4 = 440 Hz
Notes and frequencies
| Physical string | Target | Frequency |
|---|---|---|
| Course 1, octave member | E3 | 164.81 Hz |
| Course 1, main member | E2 | 82.41 Hz |
| Course 2, octave member | A3 | 220.00 Hz |
| Course 2, main member | A2 | 110.00 Hz |
| Course 3, octave member | D4 | 293.66 Hz |
| Course 3, main member | D3 | 146.83 Hz |
| Course 4, octave member | G4 | 392.00 Hz |
| Course 4, main member | G3 | 196.00 Hz |
| Course 5, main member | B3 | 246.94 Hz |
| Course 5, unison member | B3 | 246.94 Hz |
| Course 6, main member | E4 | 329.63 Hz |
| Course 6, unison member | E4 | 329.63 Hz |
Changing the tuner calibration recalculates every target from A4 = 415–450 Hz. The values above use the common 440 Hz reference.
Practical answers
Frequently asked questions
Are the lower four 12-string courses tuned in octaves?
Yes. In Standard tuning the E, A, D and G courses pair a higher octave with the fundamental; B and high E are tuned in unison.
Why does the tuner show twelve targets instead of six?
Each physical string has its own peg and can drift independently. Auto mode therefore visits all twelve strings, including both members of every course.
Does tuner.love upload my microphone audio?
No. Pitch analysis runs locally in your browser. Microphone audio is not uploaded to a backend and is never replayed through your speakers.
Ready to tune?
Open the live tuner. Your browser handles the microphone signal locally.
Open tune all 12 strings of a 12-string guitar