Dose and water planner
Plan your brew
StrengthPreset ratio
All Coffee Corner tools
Dose Planner
Brew Ratio Calculator
Calculate coffee dose, brew water, and espresso yield for pour-over, drip, French press, AeroPress, moka pot, cold brew, and espresso recipes.
Dose in gramsWater or yieldDial-in recipe
Plan dose and water/yield for common brew methods. Ratios are starting points, because grind, roast, and taste still matter.
Ratio Guide
A coffee ratio calculator for repeatable brewing
A good coffee recipe starts with a simple relationship: coffee dose multiplied by ratio equals brew water or espresso yield. This calculator makes that relationship fast, readable, and easy to adjust for different brew methods.
Coffee-to-water ratio math
Enter a coffee dose in grams and choose a ratio to calculate brew water or espresso yield without mental arithmetic.
Common brew methods
Start from sensible defaults for pour-over, drip, French press, AeroPress, moka pot, cold brew, cold brew concentrate, and espresso.
Dial-in friendly
Use the result as a starting recipe, then adjust grind, contact time, temperature, and ratio until the cup tastes balanced.
Scale within your brewer’s capacity
Scale a recipe only within your brewer’s fill lines and basket capacity. The calculator does not know your equipment or check whether a batch will fit.
How to use this tool
- Pick the brew method closest to your recipe, or type a custom ratio.
- Enter either the dry coffee dose or water/yield in grams. The last amount edited stays fixed when you change the ratio.
- Use brew-water weight for filter recipes and finished beverage weight for espresso. Follow your equipment manual and capacity limits before using the amounts.
- Taste the cup and adjust the next brew: lower ratios taste stronger, higher ratios taste lighter.
Quick Answers
Frequently asked questions
Does the water amount tell me how much coffee I will pour?
No. For filter, immersion and cold brew, the calculator divides input water into shares; grounds and equipment retain some of that water. Weigh your finished brew to divide the actual output. Espresso is different: its ratio uses the target beverage weight in the cup.
What is a good pour-over coffee ratio?
A common starting point for pour-over or drip coffee is around 1:16, meaning 1 gram of coffee to 16 grams of water.
What is a good French press ratio?
A practical French press starting point is around 1:15. Some people prefer stronger full-bodied cups closer to 1:12 or 1:14.
What ratio should I use for cold brew?
The concentrate preset matches our guide: 100 g coffee and 400 g water, a 1:4 brewing ratio, refrigerated for 20–24 hours before filtering. Start by mixing one part finished concentrate with two parts water by volume. Brewing ratio and serving dilution describe different steps; adjust dilution to taste.
Can I scale a moka pot recipe to any amount?
No. The pot’s size and manufacturer instructions control the water and coffee amounts. For Bialetti Moka Express, keep water below the safety valve, fill the basket without tamping, and let the pot cool before opening. A calculated ratio does not override those instructions.
Does espresso use water ratio or yield ratio?
Espresso recipes usually track beverage yield. A 1:2 espresso means 18 g of ground coffee producing about 36 g of espresso.
Put the ratio to work
Use a complete recipe with your calculation
Follow our six brewing methods for grind, water temperature, pouring, and timing. The pour-over recipe is a measured starting point for filter coffee.
For concentrate, use the cold-brew dilution guide. For a shot, follow the espresso dose and yield recipe, then use our tasting guide to describe what you want to adjust.