Index Coffee · Home Brew Tools
Cold Brew Calculator
Brew as a concentrate you dilute before drinking, or brew ready-to-drink (no dilution) - pick your method, then indicate your batch size.
Steep time: we recommend 13 hours at room temperature or 24 hours refrigerated, which produces a thicker, silkier brew with a rounder flavor profile.
Concentrate is brewed strong (espresso strength) and diluted before drinking; Ready-to-Drink is brewed with more water, with no dilution step. We've shared our recommended ratios, but you can adjust to your taste.
Brew style
Measure in
Ratio — by weight
1 part coffee : 5.7 parts water
steeping ratio for concentrate — dilute after brewing
Water
mL
:
Coffee
g
Enter either amount — the other updates automatically.
Concentrate yield
—
Dilution — parts water per part concentrate
Finished cold brew (diluted)
—
Finished cold brew (ready-to-drink)
—
Our concentrate recipe is 2.6 L water per lb of coffee, yielding roughly 2 qt of concentrate per lb of coffee, which we dilute 1 part concentrate to 2 parts water to serve. Brewing ready-to-drink, we start at 1:12.5 and do not dilute.