Click save settings to reload page with unique web page address for bookmarking and sharing the current tool settings

Change the answer mode for this tool by selecting P_{1} gas pressure, V_{1} gas volume, P_{2} gas pressure or V_{2} gas volume as the parameter to calculate instead

**Absolute pressure measurement products**

- 760mmHg absolute range digital vacuum gauge
- 3000 psia high accuracy 0-10Vdc out pressure sensor for leak checking pressurized tanks
- DS200P Sanitary Low Range Pressure Gauge, Switch and Sensor
- PGS40 Mid Pressure Calibration Hand Pump

## Related Tools

- Ideal gas law calculator
- Charles’ law calculator
- Avogadro’s law calculator
- Gay-Lussac’s law calculator
- Combined gas law calculator
- Pressure units conversion
- Volume units conversion

## User Guide

This tool will calculate any parameter from the equation defined by Boyle’s law P₁V₁=P₂V₂, which includes the P_{1} gas pressure, V_{1} gas volume, P_{2} gas pressure and V_{2} gas volume.

Boyle’s law explains that for an ideal gas, the absolute pressure is inversely proportional to its volume, if the amount of gas and the temperature of the gas remain constant.

### Formulas

Boyle’s Law is explained with math in the following ways.

The pressure of an ideal gas is inversely proportional to its volume:

P ∝ 1 / V

The pressure multiplied with the volume of the gas in a given state, equals a constant value:

P · V = Constant

The multiplying together of the pressure and volume of an ideal gas in one state, equals the multiplying of the pressure and volume of an ideal gas in another state, as long as the temperature and quantity of gas does not change between the two states.

P_{1} · V_{1} = P_{2} · V_{2}

The formulas used by this Boyle’s law calculator to determine each individual parameter are:

P_{1} = P_{2} · V_{2} / V_{1}

V_{1} = P_{2} · V_{2} / P_{1}

P_{2} = P_{1} · V_{1} / V_{2}

V_{2} = P_{1} · V_{1} / P_{2}

#### Symbols

- P
_{1}= Pressure of the first gas state - V
_{1}= Volume of the first gas state - P
_{2}= Pressure of the second gas state - V
_{2}= Volume of the second gas state

### P_{1}

This is the absolute pressure of the first gas state.

### V_{1}

This is the total volume occupied by the first gas state.

### P_{2}

This is the absolute pressure of the second gas state.

### V_{2}

This is the total volume occupied by the second gas state.

**Absolute pressure measurement products**

- 5 to 20 psi absolute ambient 4 to 20 ma pressure transmitter
- 300 psi absolute range 4-20 milliamps output pressure sensor
- NPSH 4-22 psia 4-20mA filtration pump suction port pressure sensor for water treatment
- Atmospheric air pressure transducer with 10 volt output