**dB** or deciBel is used to express the ratio of two power values on a logarithmic scale.

**V/m** or Volt per meter is a unit of measurement used to quantify the strength or intensity of an electric field at a specific point in space.

**dB** is a ratio and it cannot be converted to **V/m** which is an absolute number.

???? However a related quantity **dBV/m** can be converted to** V/m**

*Note the suffix V/m. It’s important that this be included.* The formula for this conversion is **V/m = 10 ^{((dBV/m) / 20)}**

Use the calculator below to find V/m from dBV/m

**Formula**

dBV/m, dBmV/m, dBµV/m, dBnV/m can all be converted to V/m using the following:

**V/m = 10**^{(((dBnV/m) – 180) / 20)}**V/m = 10**^{(((dBµV/m) – 120) / 20)}**V/m = 10**^{(((dBmV/m) – 60) / 20)}**V/m = 10**^{((dBV/m) / 20)}

**Example Calculation**

- 10 dBV/m converts to 3.16 V/m
- 10 dBµV/m converts to 3.16 * 10
^{-6 }V/m or 3.16^{ }µV/m

**Background**

**Volts per meter (V/m)** is a unit of measurement used to quantify the strength or intensity of an electric field at a specific point in space. It represents the electric potential gradient or the rate at which the electric potential (voltage) changes over a given distance.

**deciBel Volt-per-meter (dBV/m)** too represents the strength or intensity of an electric field at a specific point in space. The difference is dBV/m uses a logarithmic scale, which makes it easier to represent and compare a wide range of field strengths.

**Application**

**Where is dBV/m used?**

The unit is used by the FCC to specify radiation limits from electronic equipment. As example is shown in the picture below