Standard Temperature
and Pressure
Advanced Calculator
Scroll to the bottom for instructions
For a simpler STP Calculator Click Here

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  V o l u m e          
  Temperature      
  P r e s s u r e      

Volume At STP Equals:








And the Number Of Moles Of Gas Equals:

Since gases do not have definite volumes, scientists have agreed upon a standard temperature of 0° Celsius and a standard pressure of 1 Standard Atmosphere at which gas volumes can be compared.

This calculator determines STP volume from data that can be input in a wide variety of different units (8 volume units, 4 for temperature and 18 for pressure). It displays the output in liters as well as 7 other volume units.
Also, it will display the number of moles of the gas based on 22.4 liters per mole.


Significant Figures >>>
Numbers are displayed in scientific format with the option to specify the precision by inputting a number in the box above. For easy readability, numbers between .001 and 1,000 will not be displayed in scientific notation
Internet Explorer and most other browsers, will display the numbers properly but there are a few browsers that will show no output whatsoever. If so, enter a zero in the box above. This eliminates all formatting but it is better than seeing no output at all.

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