Cold Brew Ratio Calculator
The Cold Brew Ratio Calculator works out how much coffee and water you need for cold brew concentrate or ready-to-drink cold brew. Enter your coffee amount and preferred ratio.
Formula
Water (ml) = Coffee (g) × Ratio
- A 1:8 ratio makes a concentrate you dilute 1:1 with water or milk.
- A 1:15–1:17 ratio brews cold brew you can drink straight.
100 g coffee at 1:8
Inputs
- Ground Coffee: 100 g
- Ratio (1 : X): 8
100 × 8 = 800 ml of water for a strong cold brew concentrate.
Frequently asked questions
What is the best cold brew ratio?
1:8 makes a concentrate to dilute later; 1:15–1:17 makes cold brew ready to drink as-is.