Coffee guides

How Much Coffee Per Cup? A Simple Coffee-to-Water Ratio

A no-fuss starting ratio, useful batch sizes, and an easy way to make your coffee stronger or milder without guessing.

Coffee recipes become much easier when you stop measuring by cups. A coffee maker cup may be smaller than the mug in your hand, and scoops can hold different amounts. A simple coffee-to-water ratio works with any brewer and makes a good cup repeatable.

Start with a 1:16 ratio

  • Use 1 gram of coffee for every 16 grams of water as a balanced starting point.
  • For a 10-ounce mug, try about 19 grams of coffee and 300 grams of water.
  • No scale? Start with roughly 2 level tablespoons of ground coffee for each 6 ounces of water.
  • If the cup tastes weak, add a little more coffee next time; if it feels too heavy, use a little less.

Why weighing works better

Water is easy to weigh because 1 milliliter of water weighs about 1 gram. Coffee is less consistent by volume: a tablespoon of fluffy coarse grounds does not weigh the same as a tablespoon of fine grounds. A small kitchen scale removes that variation and makes it easy to repeat a cup you liked.

Quick measurements for bigger batches

At a 1:16 ratio, use about 16 grams of coffee for 250 grams of water, 31 grams for 500 grams, 47 grams for 750 grams, or 62 grams for 1 liter. You do not need to hit every number perfectly. Treat the ratio as a reliable starting point, not a rule you can fail.

Strength and extraction are different

Adding coffee usually makes a cup stronger, but grind size and brew time affect whether it tastes balanced. If a strong cup is also bitter, a coarser grind or shorter brew may help more than changing the amount. If it is sour, a finer grind or longer brew may be the better adjustment.

Try this next: Weigh the coffee and water for your next brew, write down the ratio, and change the coffee dose by only 1 or 2 grams the next time.

Bottom line: Start near 1:16, keep the water amount consistent, and adjust the coffee dose to taste. The best ratio is the one you can repeat and enjoy.