A coffee-to-water ratio tells you how much brewing water to use for a measured amount of dry coffee. For a straightforward starting point with drip or pour-over coffee, try 1:16 by weight: one gram of coffee for every sixteen grams of water. Treat that as a test recipe, not a rule every coffee must follow.
The useful part is consistency. If you can repeat yesterday's cup, you can make a sensible adjustment tomorrow.
What 1:16 looks like in the kitchen
- 15 grams of coffee with 240 grams of water.
- 20 grams of coffee with 320 grams of water.
- 30 grams of coffee with 480 grams of water.
- 60 grams of coffee with 960 grams of water.
Those are water amounts going into the brew. The finished drink weighs less because the grounds retain some water. A machine's marked “cup” may also be much smaller than your favorite mug, so check its manual before using cup markings to plan servings.
Use a scale without making coffee complicated
- Place your empty container on the scale and zero it.
- Weigh the dry coffee.
- Multiply that weight by sixteen to find the starting water amount.
- Measure the water separately for an automatic brewer, or follow the scale total as you pour for a manual brew.
- Write down the result and taste before changing it.
Stay within the brewer's minimum and maximum batch sizes. A small manual dripper and a large automatic machine will not necessarily behave the same way at every volume. Our guide to coffee makers covers the main method differences.
Adjust strength in small steps
If the cup tastes balanced but lighter than you want, try 1:15 with the same coffee dose. Twenty grams of coffee would use 300 grams of water. If it tastes balanced but too concentrated, try 1:17, or 340 grams of water for that same dose. Keep the grind and technique steady while comparing.
A harsh, sour, or uneven cup needs more investigation than simply adding coffee. Grind, water, and brewing technique also matter. The National Coffee Association's pour-over guide likewise treats ratio as one part of the brewing process.
Does this work for espresso or cold-brew concentrate?
Use a method-specific recipe for those. Espresso recipes commonly compare dry coffee dose with finished beverage weight; cold-brew concentrate is deliberately stronger before dilution. Neither should be treated as an ordinary 1:16 pot of filter coffee.
Once your recipe is consistent, choosing beans gets easier. Explore our smooth and balanced coffees, and use the coffee ordering guide to translate your daily dose into a sensible buying routine.