Ideal Gas Law Calculator (PV=nRT)
Solve any one of pressure, volume, amount of substance or temperature from the ideal gas law PV = nRT, with Pa/kPa/bar/atm and m³/L/cm³/K/°C units.
Key points
Ideal Gas Law Calculator (PV=nRT): Solve any one of pressure, volume, amount of substance or temperature from the ideal gas law PV = nRT, with Pa/kPa/bar/atm and m³/L/cm³/K/°C units. Formula: PV = nRT ｜ R = 8.314 J/(mol·K). Enter parameters on the DD-CAT IDE online tool page to get results instantly, with a calculation-model diagram that updates with the inputs. Ideal gas law PV = nRT: R = 8.314 J/(mol·K); temperature must be in kelvin (K), pressure in Pa and volume in m³. At STP (0 °C, 1 atm), one mole of ideal gas occupies about 22.414 L.
Inputs
PV = nRT ｜ R = 8.314 J/(mol·K)Calculation model (updates with parameters)
| Pressure P | 101.3 kPaPa | P = nRT / V |
| Pressure (kPa) | 101kPa | |
| Full state | P 101000 Pa · V 0.0224 m³ · n 1 mol · T 273.15 K | Remaining state quantities converted from the current inputs |
| Gas constant R | 8.314J/(mol·K) |
Engineering notes
- Ideal gas law PV = nRT: R = 8.314 J/(mol·K); temperature must be in kelvin (K), pressure in Pa and volume in m³.
- At STP (0 °C, 1 atm), one mole of ideal gas occupies about 22.414 L.
- Real gases deviate from the ideal model at high pressure / low temperature (requiring the van der Waals correction); this tool is an ideal-model estimate.
FAQ
- What is Ideal Gas Law Calculator (PV=nRT) for?
- Solve any one of pressure, volume, amount of substance or temperature from the ideal gas law PV = nRT, with Pa/kPa/bar/atm and m³/L/cm³/K/°C units.
- What is the formula for Ideal Gas Law Calculator (PV=nRT)?
- Core formula: PV = nRT ｜ R = 8.314 J/(mol·K). The tool returns results instantly using this formula and the selected parameters.
- What engineering notes should I keep in mind when using Ideal Gas Law Calculator (PV=nRT)?
- Ideal gas law PV = nRT: R = 8.314 J/(mol·K); temperature must be in kelvin (K), pressure in Pa and volume in m³. At STP (0 °C, 1 atm), one mole of ideal gas occupies about 22.414 L. Real gases deviate from the ideal model at high pressure / low temperature (requiring the van der Waals correction); this tool is an ideal-model estimate.