Transposing Trumpet?

Question:

Transposing Trumpet?

Does anyone know how to Transpose Trumpet to French Horn

Best Answer - Chosen by Asker: Trumpet is written in B flat.
French horn is in key of F.

So, a B flat = F
B =F sharp
C =G
D flat=G sharp/A flat
Etc...

It might be helpful to play the transposed music while you go along to make sure that the intervals sound the same as the original trumpet composition.