As we know One B is equal to 1.151277918 Np (1 B = 1.151277918 Np).

To convert Bel to Neper, multiply your B figure by 1.151277918.

Example : convert 25 B to Np:

25 B = 25 × 1.151277918 Np = Np

To convert Neper to Bel, divide your Np figure by 1.151277918.

Example : convert 25 Np to B:

25 Np = 25 ÷ 1.151277918 B = B