OmniCalcsCoffee Ratio Calculator
Find how much water to pour from your coffee dose and a brew ratio such as 1:16.
How to Use This Coffee Ratio Calculator
Enter the coffee dose in grams and the brew ratio n in 1:n. The calculator returns the water to pour and the expected liquid yield.
- Pour-over — 1:15 to 1:17 is a common starting range.
- French press — often around 1:15.
- AeroPress — often 1:12 to 1:16 depending on style.
Practical Example
An 18 g V60 dose at 1:16:
- Water = 18 × 16 = 288 g
- Expected yield ≈ 288 g of brew (grounds retain a little water in the filter)
What Your Results Mean
- Brew water — the mass of water to heat and pour.
- Expected yield — the liquid in the carafe if little water stays in the bed; for pour-over this matches the water mass in this calculator.
- Ratio — restated as 1:n so you can log the recipe.
Frequently Asked Questions
What brew ratio should I start with?
1:16 is a widely used pour-over starting point. Go lower (1:15) for a stronger cup, higher (1:17) for a lighter one.
Is water measured in grams or milliliters?
For brewing water, grams and milliliters are effectively the same. Use a scale in grams when you can.
Why is yield equal to water here?
This tool treats yield as the water mass, which is the recipe target. Real pour-over keeps a little water in the grounds, so the carafe may be slightly less.
Does this work for espresso?
Espresso uses a different ratio, often 1:2 dose to beverage. You can still multiply dose by that ratio, but extraction time and grind matter more.
Should I include rinse water?
No. Rinse the paper, dump that water, then pour the calculated brew water onto the dose.