Pour-Over Coffee Ratio & Brew Water Calculator
Pick your coffee dose and ratio (1:15 to 1:17) to get exact water amounts for blooming, first, and second pour
Choose your hand-drip coffee dose (grams) and preferred ratio (1:15 to 1:17) to get your total water volume, plus exactly how much water to use for blooming and each pour stage.
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How to use
- Choose your coffee dose (g) and preferred ratio (1:15 to 1:17).
- See the exact water amount (ml) needed for the bloom, first pour, and second pour.
FAQ
- What's the standard pour-over ratio?
- 1:16 — 320ml of water for 20g of coffee — is the classic Gold Cup Standard, widely considered the most balanced ratio.
- How does the ratio affect flavor? Is a lower number like 1:15 different from 1:17?
- A lower ratio like 1:15 uses relatively less water, giving a stronger, fuller-bodied cup. A higher ratio like 1:17 uses more water for a lighter, brighter, more acidic cup.
- Why is the blooming water calculated separately?
- Blooming typically uses about twice the coffee's weight in water to release trapped gas, and that amount counts toward your total. Subtracting it first is what keeps the first and second pour amounts accurate.