Homebrewing Calculators

Fermentation Temperature Rate Calculator

Calculate how temperature changes affect fermentation speed using the Q10 rule. Predict new fermentation time when raising or lowering your fermentation temp.

Dry Hop Rate Calculator for Beer

Calculate how many ounces or grams of hops to add for dry hopping. Scales by batch size and desired intensity from subtle aroma to very hazy double dry hop.

Homebrew Boil-Off Volume Calculator

Estimate how much wort you lose to evaporation during the boil. Enter pre-boil volume, boil time, and kettle diameter to hit your target batch size.

Mash Strike Water Temperature Calculator

Calculate the correct strike water temperature to hit your target mash temperature. Uses the standard Palmer formula for grain-to-water ratio and grain temp.

Mash Thickness Calculator

Calculate mash thickness from grain bill and strike water. Get water-to-grain ratio in qt/lb or L/kg for any all-grain or partial mash recipe.

Homebrewing Hop Utilization Calculator

Calculate hop alpha-acid utilization by boil time and gravity. Get IBU contribution by hop addition for IPAs, lagers, and stouts using Tinseth formula.

Beer Color (SRM) Calculator

Calculate the expected SRM color of your homebrew from the grain bill. Predict whether your beer will be pale gold, amber, or black using the Morey equation.

Brewing Water Chemistry Calculator

Calculate mineral additions for your brewing water. Adjust calcium, magnesium, sulfate, and chloride levels to hit your target water profile for any beer style.

Fermentation Temperature Correction Calculator

Correct your hydrometer gravity readings for fermentation temperature. Hydrometers are calibrated at 20 C and give inaccurate readings at other temperatures.

Homebrew ABV Calculator

Calculate alcohol by volume (ABV) from original and final gravity readings. Uses the standard and alternate formulas for homebrewing accuracy.

IBU Bitterness Calculator

Calculate hop bitterness in IBU (International Bitterness Units) using the Tinseth formula. Enter hop weight, alpha acid, and boil time.

Keg Carbonation Calculator

Calculate CO2 pressure (PSI) needed to carbonate your homebrew keg to a target volumes of CO2. Based on beer temperature and target style.

Mash Water Volume Calculator

Calculate mash water and sparge water volumes for all-grain homebrewing. Based on grain weight, water-to-grain ratio, and target pre-boil volume.

Original Gravity Calculator

Calculate expected original gravity (OG) for your homebrew from grain bill. Enter grain weight, extract efficiency, and batch size.

Priming Sugar Calculator

Calculate how much priming sugar to add for bottle carbonation. Enter batch size, desired CO2 volumes, beer temperature, and sugar type.

Yeast Pitch Rate Calculator

Calculate the correct amount of yeast to pitch for your homebrew. Based on wort volume, OG, and yeast type. Avoid under-pitching and off-flavors.