Process vapour pressure interpolation calculator

Calculate vapour pressure with your own figures.

Your numbers

Use the units shown. Results update as you change valid inputs.

Use vapour pressure to compare changes to your inputs. The method and limits below explain the scope.

Examples

Examples

Try the starting example

Temperature (°C)
50
Supplied Antoine [A,B,C] for log10(P mmHg)=A−B/(C+T)
8.078986917994728,1733.926,233.665
Supplier validity temperature range [min,max] °C
30.85,59.85
Vapour pressure (mmHg)
92.555752
Vapour pressure (Pa)
12,339.753799

Try another scenario

Temperature (°C)
55.00000000000001
Supplied Antoine [A,B,C] for log10(P mmHg)=A−B/(C+T)
[8.078986917994728, 1733.926, 233.665]
Supplier validity temperature range [min,max] °C
[30.85, 59.85]
Vapour pressure (mmHg)
118.108236
Vapour pressure (Pa)
15,746.471948
Calculation method

Calculation method

Vapour pressure (mmHg)

10^(A−B/(C+T)) within supplied coefficient range.

Vapour pressure (Pa)

mmHg ×133.322387415.

Symbols and units
a
Temperature (°C)
b
Supplied Antoine [A,B,C] for log10(P mmHg)=A−B/(C+T)
c
Supplier validity temperature range [min,max] °C

Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.

Assumptions & limits

Assumptions & limits

  • Supplied Antoine coefficients and validity interval, with an explicit mmHg/°C convention. Default coefficients illustrate water; no substance identification or range is inferred. Quantities are deterministic calculations from supplied observations and assumptions; no external data is fetched. Supported limits: Finite inputs only; numeric fields bounded as labelled. Lists and JSON records are limited to 256 entries unless a stricter tool bound is stated. No automatic design approval, legal conclusion, treatment recommendation or safety certification. Default example is the NIST304–333K water coefficient set, explicitly converted from bar/K to mmHg/°C; user-supplied sets must use the displayed convention. Temperature (°C): minimum None, maximum 1000000000000.0. Supplied Antoine [A,B,C] for log10(P mmHg)=A−B/(C+T): minimum None, maximum 1000000000000.0. Supplier validity temperature range [min,max] °C: minimum None, maximum 1000000000000.0.
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Further reading

Method reference ↗

Background reading; this does not imply endorsement or independent review of SumFizz.

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