Pressure Conversion
The Pressure Conversion tool converts between different pressure units used in brewing.
How to Use
Enter a value in any pressure unit field
View instant conversions - All other units update automatically
The tool remembers your last entered value
Supported Units
Bar: Metric pressure unit
PSI (Pounds per Square Inch): US standard
kPa (Kilopascals): SI unit
Atmospheres (atm): Standard atmosphere
Carbonation Pressures
At 3.3°C (38°F)
2.0 vols CO2: 0.34 bar (5 PSI)
2.5 vols CO2: 0.69 bar (10 PSI)
3.0 vols CO2: 1.10 bar (16 PSI)
3.5 vols CO2: 1.45 bar (21 PSI)
Temperature Adjustment
Higher temperatures require more pressure:
Add ~0.07 bar per 1°C increase (~1 PSI per 2°F)
Subtract ~0.07 bar per 1°C decrease (~1 PSI per 2°F)
Serving Pressures
Typical Settings
Ales: 0.69-0.83 bar (10-12 PSI)
Lagers: 0.83-0.97 bar (12-14 PSI)
Wheat Beers: 0.97-1.24 bar (14-18 PSI)
Belgian Ales: 0.83-1.10 bar (12-16 PSI)
Line Resistance
Add pressure for:
Vertical lift: 0.05 bar per meter (0.5 PSI per foot)
Line length: Varies by diameter
Flow restrictors: Check specs
Pressure Relief
Safety Limits
Corny Kegs: 9 bar max (130 PSI)
Sanke Kegs: 4 bar typical (60 PSI)
PET Bottles: 4 bar max (60 PSI)
Glass Bottles: 3.5 bar typical (50 PSI)
PRV Settings
Set 0.7-1.0 bar (10-15 PSI) above serving
Test regularly
Replace if faulty
Practical Applications
Force Carbonation
Burst carb: 2.0-2.8 bar (30-40 PSI)
Set and forget: 0.83-0.97 bar (12-14 PSI)
Adjust for temperature
Pressure Testing
Check for leaks: 1.4-2.0 bar (20-30 PSI)
Seal testing: 0.34-0.69 bar (5-10 PSI)
System pressure checks
Altitude Adjustments
Lower atmospheric pressure
Affects carbonation levels
Adjust accordingly
Quick Reference
Common Conversions
0.69 bar = 10 PSI
1.03 bar = 15 PSI
1 bar = 14.5 PSI
2.07 bar = 30 PSI
Tips
Use accurate pressure gauges
Check regularly as pressure can drift
Always use pressure relief valves for safety
Last updated
Was this helpful?