CO2 Calculator

CO₂ & Spunding Calculator

Precision calculations for carbonation stone correction, headspace pressurization, and natural carbonation (spunding)

⚠️ Important Note on Equipment Safety and Internal Pressure

This tool is intended to assist with brewing calculations. When pressurizing tanks, always confirm and adhere to the vessel's Maximum Allowable Working Pressure (MAWP) and standard safety procedures to prevent structural failure due to overpressurization.

CO₂ Measurement Unit:
1. Tank Conditions & Carb Stone Settings
Gravity Unit:

※ 35.6 °F

※ approx. 4.90 g/L CO₂

※Vertical distance from stone to liquid surface

※ approx. 3.1 °P

※Resistance pressure before bubbles form (usually 2-5 PSI)

2. Regulator Setting Pressure Summary
16.7 PSI
1.15 bar
Equilibrium Pressure (Henry's Law):
10.1 PSI
Hydrostatic Correction:
+ 3.6 PSI
Wetting Correction:
+ 3.0 PSI