Tune your B♭ trumpet or cornet with your microphone. The tuner is set to B♭, so it shows the note you read on the page, not the note that sounds (concert pitch).
Free, no sign-up
B♭ transposition
Cents readout
Private, on-device
Reference pitch (A4)
Hz
Lower it in noisy rooms
B♭ instrumentA4 440 Hz
Press Start tuning, then play or sing a note
Detected note
B♭ instrument (written pitch)
Reference octave
Frequency
—
Target
—
Deviation
—
Clarity
—
Written notes for B♭ instrument
Concert pitch
You read
C
D
D♭
E♭
D
E
E♭
F
E
G♭
F
G
G♭
A♭
G
A
A♭
B♭
A
B
B♭
C
B
D♭
Tuning a trumpet
Warm the trumpet up for a minute first, because a cold instrument plays flat. Then play your tuning note with a relaxed, steady tone and watch the needle.
Needle left (flat): push the main tuning slide in.
Needle right (sharp): pull the main tuning slide out.
Bands usually tune to concert B♭, which is a written C on a B♭ trumpet. Some notes, such as low D and C♯, tend to be sharp. Use the first and third valve slides to fix them.
Trumpet parts are written in B♭, so a normal tuner shows a note a whole step away from the one you read. This tuner shows the written note instead.
How to use it
Warm up, press Start tuning and play your tuning note. Push the main slide in if the needle is on the left (flat) and pull it out if it is on the right (sharp).
Frequently asked questions
Why does the tuner show C when I play concert B♭?
The tuner is set to B♭ transposition, so it shows the written note. On a B♭ trumpet, a written C sounds as concert B♭. To see the note that actually sounds, switch to concert pitch in the menu.
Which way do I move the tuning slide?
Pull the main slide out to lower the pitch and push it in to raise it. Move it a few millimetres at a time and play again.
Can I use this for a C trumpet or a cornet?
A cornet is in B♭ like the trumpet, so keep the B♭ setting. For a C trumpet, choose concert pitch (C) in the menu.
