Fiddle tuner – Cajun (FCGD)
F-C-G-D · Alternative
Press “Start tuner” – the browser will ask for microphone access. Sound is analysed on this device and never uploaded.
This free online tuner listens through your microphone and shows how close each string of your Fiddle is to Cajun (FCGD) tuning (F-C-G-D). Play a string, watch the needle, and turn the peg until the meter glows green. If you prefer tuning by ear, tap any string card to hear its reference tone.
About Cajun (FCGD) tuning
Compared with Standard (GDAE), Cajun (FCGD) moves 4 strings. Every change is downward, the largest by 2 semitones, so the instrument sits at lower tension than in Standard (GDAE).
| String | Standard (GDAE) | Cajun (FCGD) | Change |
|---|---|---|---|
| 1 | G3 | F3 | down 2 semitones |
| 2 | D4 | C4 | down 2 semitones |
| 3 | A4 | G4 | down 2 semitones |
| 4 | E5 | D5 | down 2 semitones |
Played open, the strings sound F-C-G-D – from F3 at the bottom to D5 at the top, a span of 1 octave and 9 semitones. Step by step across the neck the intervals are a fifth, a fifth, a fifth, and that is what decides how chord shapes fall under the hand.
History
Where the Cajun (FCGD) tuning comes from
F-C-G-D is the Cajun tuning, a whole step below standard, used by Louisiana fiddlers to fit with the accordion and singers.
Other Fiddle tunings
Standard
Alternative
How do I tune my Fiddle to Cajun (FCGD)?
Allow microphone access, pluck a string, and the tuner will detect it automatically. The needle shows whether the string is flat or sharp – adjust until the reading is within ±5 cents (F-C-G-D).
Which notes are used in Cajun (FCGD) tuning?
Cajun (FCGD) tuning for Fiddle uses the notes F-C-G-D, listed from the lowest string to the highest.
Can I tune without a microphone?
Yes. Every string card plays a reference tone – tap it and match your string to the sound by ear.