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decibel (power)
Symbol:  dB (power) 
Category:  Logarithm of a ratio 
SI Equivalent:  1 dB
Dimension nil (log) 
System:  SI 
 
Notes
The decibel is a unit for expressing the ratio between two amounts of acoustic power. It is defined as 10┬Ělog10P1/P2.
Convert     dB (power)  
1 dB (power) =
Logarithm of a ratio
  Symbol Unit Name
0.1  B (power)  bel (power) 
0.2  B (voltage)  bel (voltage) 
dB (voltage)  decibel (voltage) 
0.230259  NP  neper 
Glossary