Free Online Fiddle Tuner

Standard · G D A E Mic or drone Chromatic No login

Tune up

Tune your fiddle right here

Jam Trainer's chromatic tuner listens through your mic and shows how sharp or flat each string is — or play the built-in drone and tune by ear. A fiddle tunes to the same G D A E as a mandolin, so pick that preset and you're set.

Open the free tuner → Opens the tuner at the G D A E preset · no login

Standard fiddle tuning (G D A E)

G4th (low)
D3rd
A2nd
E1st (high)

Low to high: G, D, A, E — each string a perfect fifth above the last. A fiddle is a violin, so the tuning is identical.

How to tune a fiddle

A fiddle is tuned in perfect fifths — from the lowest string to the highest, G D A E. It's the exact same tuning as a violin (a fiddle is a violin — "fiddle" just describes the old-time and bluegrass playing style) and the same four notes as a mandolin.

  1. Open the tuner and choose the G D A E (Mandolin) preset.
  2. Play one string at a time. The tuner hears the pitch and shows whether you're sharp or flat.
  3. Use the pegs for big adjustments, then the fine tuners on the tailpiece for the last little bit — that's what they're there for.
  4. Work from the G string up to the E, then re-check — tuning one string can nudge the others as the bridge settles.

Tune by ear with the drone

Old-time and bluegrass fiddlers live and die by their ear, so it's worth learning to tune without staring at a needle. Play the drone on a string's target note and match the string to it — when the two stop "beating" against each other, you're in tune. Because a jam won't pause for you to plug in a tuner, that skill pays off fast.

Check your tuning against the band

Once you're close, the real test is playing along. Pull up a tune in Jam Trainer and you'll hear immediately whether your fiddle sits right on top of the guitar and mandolin, or whether a string has drifted. So tune first with the needle, then let your ear confirm it against a full band.