Online Flute Tuner
Precise chromatic tuning for flute, with concert A and Bb reference tones.
Tap the mic and play a note
How to tune a flute online
Tap the microphone button and allow browser access — nothing is recorded or uploaded. Play a note with a steady air stream and hold it. CleanTune analyzes any pitch chromatically — use the reference tones below to set your headjoint.
The crown cork: a second, rarely touched tuning point
Beyond pulling the headjoint out, there's a second tuning adjustment most players never touch: the cork inside the head near the crown, positioned by a tuning rod. Its distance from the embouchure hole affects the flute's overall scale — how in tune the low, middle and high registers sit relative to each other — rather than just shifting everything sharp or flat together like the headjoint pull does. It's set at the factory and rarely needs adjustment, but if your flute sounds unevenly in tune across registers no matter how you pull the headjoint, a technician checking the cork position is worth considering before assuming a playing problem.
Adjust your headjoint
Pull the headjoint out slightly to flatten your pitch, push it in to sharpen it.
Watch your embouchure and air angle
Rolling the flute in or out and changing your air angle affects pitch as much as the headjoint — keep your embouchure consistent while tuning.
Tune in the middle register first
Get your headjoint set using a comfortable middle-register note before checking your low and high range.
Frequently asked questions
What note do you tune a flute to?
Most orchestras and bands tune flutes to a concert A (A4), though some band settings use Bb.
Why is my flute sharp in the high register?
This is a common tendency — most flutists correct it with air support and embouchure rather than constantly moving the headjoint.
Can I use this tuner without playing into the microphone?
No — CleanTune listens to real sound through your device's microphone, so you need to play the flute normally for it to detect pitch.
I've adjusted my headjoint but registers still sound uneven — what else could it be?
That points to the crown cork position inside the headjoint, which affects how the registers relate to each other rather than shifting overall pitch. It's a factory-set adjustment, not something to change casually — worth a technician check rather than more headjoint pulling.