Mash Calculator
Calculate your strike water temperature and water volumes for all-grain and BIAB brewing. Hit your target mash temperature every time.
Strike Water Temperature
The grain will cool your hot water when you add it. This calculates how hot your strike water needs to be to reach your target mash temperature.
Room temp ≈ 70°F
Typical: 1.25–1.75
Water Volume Calculator
Calculate your total water needs including mash water, grain absorption, and sparge volume.
Volume you need in the kettle before boiling
Mash Temperature Guide
Tips
Grain absorption is approximately 0.125 gallons per pound of grain. This calculator uses that standard estimate.
BIAB brewers: Use a higher water-to-grain ratio (2.0+ qt/lb) since you're doing a full-volume mash with no sparge.
Pre-heat your mash tun with boiling water before adding strike water. This prevents the vessel from absorbing heat and dropping your mash temperature.