Enter the absolute pressure and the atmospheric pressure into the calculator to determine the gauge pressure.

- Absolute Pressure Calculator
- Vapor Pressure Calculator (Solvent/Solution)
- Pressure Altitude Calculator

## Gauge Pressure Formula

The following equation is used to calculate the gauge pressure.

Pg = Pa – Pat

- Where Pg is the gauge pressure
- Pa is the absolute pressure
- Pat is the atmospheric pressure

## Gauge Pressure Definition

Gauge pressure is a pressure measure by an instrument minus the atmospheric pressure surrounding the gauge.

## Gauge Pressure Example

How to calculate gauge pressure?

**First, determine the absolute pressure.**Calculate the absolute pressure.

**Next, determine the atmospheric pressure.**Measure the atmospheric pressure.

**Finally, calculate the gauge pressure.**Calculate the gauge pressure using the formula above.

## FAQ

**What is a gauge pressure?**

A gauge pressure is a pressure measured by an instrument without taking into account the atmospheric pressure around it.

**How is gauge pressure calculated?**

The gauge pressure is calculate by subtracting the atmospheric pressure from the absolute pressure.

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