Enter the total number of electron volts (eV) and the mass into the calculator to determine the velocity.

## eV to Velocity Formula

The following equation is used to calculate the .

V = SQRT(2* eV * 1.602*10^-19 / m)

• Where V is the velocity (m/s)
• eV is the number of electron volts (eV)
• m is the mass (kg)

To calculate velocity from electron volts (ev), multiply the electron volts by 2 times 1.602 times 10 to the negative 19th power, then divide by the mass. Finally, take the square root of this result.

## How to Calculate Velocity from eV?

Example Problem:

The following example outlines the steps and information needed to calculate velocity from eV.

First, determine the number of electron volts. In this example, the number of electron volts is found to be 30 eV.

Next, determine the mass. For this problem, the mass is found to be .0000035 kg.

Finally, calculate the velocity from eV using the formula above:

V = SQRT(2* eV * 1.602*10^-19 / m)

V = SQRT(2* 30 * 1.602*10^-19 / .0000035)

V = 0.00000165719 m/s