Cold brew ratio calculator: concentrate at 1:4 to 1:5
Concentrate first, dilution second. Type the water your jar holds and get the grind weight, then see what it pours after a 1:1 dilution.
The calculator above is the full coffee ratio calculator with cold brew loaded. Switch methods with the buttons at the top and your numbers convert with it.
The published starting points
These are starting points, not laws. Every figure below is quoted from the source named beside it, and the calculator flags you when your number falls outside the published band.
| Method | Published ratio | Other published parameters | Source |
|---|---|---|---|
| Espresso | 1:2 (dose to brewed espresso) | 20 to 30 seconds of contact | National Coffee Association |
| Pour over | 1:13 to 1:16 | Medium grind, 93 plus or minus 3 C, 2 to 4 minutes | National Coffee Association |
| French press | 1:10 to 1:16 | Coarse grind, 93 plus or minus 3 C, about 4 minutes | National Coffee Association |
| AeroPress | No published weight ratio | 16 to 18 g, medium grind, water to the 4 mark, 185 F (85 C) | AeroPress |
| Moka pot | No published weight ratio | Cold water to the lower edge of the safety valve, funnel filled without pressing | Bialetti |
| Cold brew | 1:4 to 1:5 (concentrate) | Coarse grind, room temperature or cooler, about 12 hours | National Coffee Association |
The other five
Espresso ratio calculator
Pour over ratio calculator
French press ratio calculator
AeroPress ratio calculator
Moka pot ratio calculator
Full method notes and the reason two of these have no published ratio sit on the main ratio calculator. Bean prices are tracked on the coffee price tracker, and every free tool is listed on the tools page.