Free Online Bb Trumpet 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 — for trumpet, this reveals whether pitch drifts as embouchure tires on a long note.
Trumpet (B♭) is already selected — note names match your written part. Switch to another instrument in the dropdown if needed.
Default is A440. Tap + / − to match your ensemble — A441–442 is common in orchestras, A415 for historical pitch.
The B♭ trumpet sounds a whole step lower than written: when you play a written C, the concert pitch is B♭. This tuner accounts for that automatically, so the note names you see match your part. Trumpet pitch is highly responsive to embouchure and air speed — faster air raises pitch, slower air drops it — which lets experienced players lip notes into tune, but also means intonation can shift as the embouchure tires through a long rehearsal or performance. The main tuning slide adjusts your overall pitch. The 1st and 3rd valve slides handle specific problem notes — low D and D♭ are notoriously flat on most trumpets and require extending the 3rd valve slide while you play them. The pitch history display helps identify whether a sustained note drifts as embouchure fatigues — a common pattern in early players worth catching early.
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