The gas constant R in L·atm/(mol·K) and other units
R = N_A·k is exact since 2019. The atmosphere, bar, torr and thermochemical calorie are defined exactly in SI units, so these values are exact as well.
= 8.314 462 618… J mol−1 K−1 about this constant →
| Unit | Value | |
|---|---|---|
| L·atm·mol−1·K−1 litre atmospheres per mole kelvin | 0.082 057 366 081 | exact |
| L·bar·mol−1·K−1 litre bars per mole kelvin | 0.083 144 626 1815 | exact |
| L·kPa·mol−1·K−1 litre kilopascals per mole kelvin | 8.314 462 618 15 | exact |
| L·Torr·mol−1·K−1 litre torrs per mole kelvin | 62.363 598 2215 | exact |
| m3·Pa·mol−1·K−1 cubic metre pascals per mole kelvin | 8.314 462 618 15 | exact |
| cal·mol−1·K−1 thermochemical calories per mole kelvin | 1.987 204 258 64 | exact |
| kcal·mol−1·K−1 kilocalories per mole kelvin | 0.001 987 204 258 64 | exact |
| erg·mol−1·K−1 ergs per mole kelvin | 83 144 626.1815 | exact |
| ft·lbf·lbmol−1·°R−1 foot pound-force per pound-mole degree Rankine | 1545.347 100 82 | exact |
How it is computed: 8.314 462 618… J/(mol·K) ÷ 101.325 J/(L·atm) = 0.082 057 366 081.
All values computed from the CODATA 2022 value and unit definitions (SI Brochure, NIST SP 811). Exact values are rounded only for display. Checks.
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