Free Online A Clarinet Tuner
Play a note — see exactly how in tune you are.
Allow microphone access to begin
How to use this tuner
Click Start Tuning and allow microphone access. Play a note — the tuner detects pitch in real time and shows how sharp or flat you are in cents.
The bar spans −50 to +50 cents. Zero is perfectly in tune. The history line shows where you’ve been — useful for spotting whether certain registers consistently drift sharp or flat.
Clarinet (A) is already selected — note names match your written part. When you play a written C, the tuner shows A: correct for your part, a minor third below concert pitch.
Default is A440. Tap + / − to match your ensemble — A441–442 is common in orchestras, A415 for historical pitch.
The A clarinet transposes a minor third below written pitch: when you play a written C, the concert pitch is A. Orchestral composers chose A clarinet for pieces in sharp keys — A, E, and B major — because the transposition puts the instrument in comfortable fingerings. A piece in A major is simply written in C major for the A clarinet. Switching between Bb and A clarinets mid-performance is common in orchestral playing; because the difference is only a semitone, it’s easy to forget to change the tuner setting. Always check the dropdown when you switch instruments. The A clarinet’s throat tones — the G, Ab, A, and Bb above the staff — behave similarly to the Bb: they tend sharp because fewer fingers on the instrument reduces resistance. The pitch history display helps you track whether these problem notes consistently sit above the line across a passage, giving you objective data rather than guesswork.
Want the complete experience?
The Tunable app adds 15+ tuning temperaments, metronome, tone generator, recording, ear training, and more — all on your phone.
