This tool converts Power in **dBm** to a percentage (**%**) value.

Converting dBm to a decibel percentage is not a standard conversion, as dBm and percentages are fundamentally different units representing different concepts.

However when a dBm value is compared to a reference power value in dBm it can be expressed as a percentage.

Enter

- Power in dBm
- Reference power in dBm

The tool will calculate the percent value

**Formula**

**P = 10 ^{(PdBm/10)} /1000**

**P = 10 ^{(PrefdBm/10)} /1000**

**Percent (%) = (P/P _{ref})*100**

where

**P**is the linear power**P**is the linear reference power_{ref}

**Example Calculations**

- A power level of
**-10 dBm**and Reference power of**0 dBm**converts to**10%** - Input power of
**0 dBm**and reference power of**-20 dBm**converts to**10,000%**