Enter the torque (N-m), the RPM, and the current (amps) into the calculator to determine the Voltage from RPM.

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## Voltage from RPM Formula

The following formula is used to calculate the Voltage from RPM.

V = 2*pi / 60 * t * w / I

- Where V is the Voltage from RPM (volts)
- t is the torque (N-m)
- w is the RPM
- I is the current (amps)

To calculate the voltage from RPM, multiply the torque by the RPM, divide by the current, then multiply by 2 times pi over 60.

## How to Calculate Voltage from RPM?

The following example problems outline how to calculate Voltage from RPM.

**Example Problem #1**

- First, determine the torque (N-m). In this example, the torque (N-m) is determined to be 15 .
- Next, determine the RPM. For this problem, the RPM is measured to be 4 .
- Next, determine the current (amps). In this case, the current (amps) is found to be 50.
- Finally, calculate the Voltage from RPM using the formula above:

V = 2*pi / 60 * t * w / I

Inserting the values from above and solving yields:

V = 2*3.14159/ 60 * 15 * 4 / 50 = .125 (volts)

**Example Problem #2**

Using the same method as above, determine the variables required by the formula. For this example problem, these are:

torque (N-m) = 41

RPM = 1

current (amps) = 52

Enter these given values into the calculator or above yields:

V = 2*3.1415/ 60 * 41 * 1 / 52 = .082** **(volts)