Headspace and Pressure Calculator for
Cellaring 750mL Wine Bottles
#1 Establish Current Parameters at 68°F
Headspace Distance  
 mm*
Headspace by volume 
 mL
Bottle Pressure 
 psi (relative)

#2 Select a Storage Temperature for Examination

Select Test Wine Temperature 

 °F

#3 Calculate Changes to Headspace and Pressure
 
Expected Ullage by Volume 
 mL
In Millimeters 
 mm*
Expected Internal Bottle Pressure 
 psid (differential)

Calculations are intended to demonstrate the effects of different temperatures on wines based on their headspace and internal pressure at bottling. It normally takes several hours for a wine bottle to reach a homogenous temperature.Please note that closure sealing properties may begin to compromise as internal pressure exceeds 15psi. Based on 14% alcohol dry wine and standard claret bottle. Other bottles and wine matrices may differ.

* Assumes the average diameter of the headspace is 20.9mm. Actual meaurements vary by bottle shape. Users should confirm headspace calculation by measuring the volume between the bottom of the cork and the expected fill height level.