Keg Forced Carbonation Calculator and Chartv1.0.0

This calculator determines the CO2 regulator pressure required to force carbonate kegged beer using the set-and-forget method. Force carbonation works by connecting a CO2 tank to a sealed keg and allowing the gas to dissolve into the beer over time. The pressure required depends on two factors: the temperature of the beer and the desired level of carbonation measured in volumes of CO2. The standard carbonation formula used here is P = -16.6999 - 0.0101059 * T + 0.00116512 * T^2 + 0.173354 * T * V + 4.24267 * V - 0.0684226 * V^2, where T is the temperature in degrees Fahrenheit, V is the desired volumes of CO2, and P is the resulting pressure in PSI.

• Select your preferred Unit System at the top. Choose US for Fahrenheit and PSI or Metric for Celsius and bar.
• Choose Calculator mode to find the pressure for a specific temperature and carbonation level, or choose Carbonation Chart mode to view a full reference table.
• In Calculator mode, optionally select a Beer Style Guide to auto-fill the recommended midpoint carbonation level for that style.
• Enter your Desired Volumes of CO2 as a decimal value. Most beers fall between 2.0 and 3.0 volumes. You can enter fractions such as 5/2 or mixed numbers such as 2 1/2.
• Enter your Beer / Keg Temperature as measured inside the keg or refrigerator. Typical keg temperatures range from 32 to 50 degrees Fahrenheit (0 to 10 degrees Celsius).
• Click Calculate or wait for the auto-calculation to display the required regulator pressure.
• Open Settings to adjust decimal precision or enable the step-by-step formula display showing the substitution of your values into the carbonation equation.
• Switch to Carbonation Chart mode to view a complete reference grid of CO2 volumes at various temperature and pressure combinations.

Force carbonation is essential for homebrewers and craft brewers who keg their beer. Knowing the correct regulator pressure eliminates guesswork and prevents over-carbonated or flat beer. Below are practical scenarios where this calculator and chart provide value.

• Homebrewing: Set the CO2 regulator to the exact PSI needed for a pale ale at 38 degrees Fahrenheit with 2.4 volumes of carbonation, then wait 10 to 14 days for full absorption.
• Craft Brewing: Compare regulator settings across multiple kegs stored at different temperatures to ensure consistent carbonation levels throughout a taproom lineup.
• Style Matching: Use the built-in style guide to find the recommended carbonation range for a German wheat beer (3.3 to 4.5 volumes) or a British ale (1.5 to 2.0 volumes) and set the pressure accordingly.
• Troubleshooting: Diagnose over-carbonation or foaming problems by verifying that the current regulator pressure matches the target volumes for the serving temperature.
• Metric Brewing: Convert between PSI and bar, or Fahrenheit and Celsius, for brewers working with metric equipment or following European recipes.
• Quick Reference: Print or bookmark the carbonation chart for use at the keg without needing a phone or computer during brew day.
• Competition Preparation: Dial in precise carbonation levels to match BJCP style guidelines before submitting entries to homebrew competitions.
• Education: Understand the relationship between temperature, pressure, and dissolved CO2 by examining the formula derivation in step-by-step mode.