Pressure Conversion

Convert between PSI, bar, kPa, and other pressure units used in brewing.

The Pressure Conversion tool converts between different pressure units used in brewing.

How to Use

1. Enter a value in any pressure unit field

2. View instant conversions - All other units update automatically

3. 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

Related docs

• Carbonation Calculator