Enter the pressure range (psi), the voltage reading (volts), the upper voltage limit (volts), and the voltage lower limit (volts) into the calculator to determine the Pressure From Voltage.

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## Pressure From Voltage Formula

The following formula is used to calculate the Pressure From Voltage.

**P = PR * (Vr – VL) / (Vu – VL)**

- Where P is the Pressure From Voltage (psi)
- PR is the pressure range (psi)
- Vr is the voltage reading (volts)
- VL is the voltage lower limit (volts)
- Vu is the voltage upper limit (volts)

## How to Calculate Pressure From Voltage?

The following example problems outline how to calculate the Pressure From Voltage.

**Example Problem #1**

- First, determine the pressure range (psi). In this example, the pressure range (psi) is given as 100 .
- Next, determine the voltage reading (volts). For this problem, the voltage reading (volts) is given as 32 .
- Next, determine the voltage lower limit (volts). In this case, the voltage lower limit (volts) is found to be 15.
- Next, determine the upper voltage limit. For this problem, this is 30.
- Finally, calculate the Pressure From Voltage using the formula above:

P = PR * (Vr – VL) / (Vu – VL)

Inserting the values from above and solving yields:

P = 100 * (32 – 15) / (30 – 15) = 113.33 (psi)

**Example Problem #2**

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

pressure range (psi) = 500

voltage reading (volts) = 60

voltage lower limit (volts) = 40

voltage upper limit (volts) = 50

Enter these given values yields:

P = 500* (60 – 40) / (50 – 40) = 1000** **(psi)