Coffee ratio calculator
Tell us how much coffee you want and how you brew it. You’ll get the grams of coffee to weigh out, with a tablespoon estimate if you don’t own a scale.
Based on Specialty Coffee Association
How to use the result
Weigh beans, not scoops: bean density varies a lot by roast, so tablespoons are only an estimate (we use about 5 g per level tablespoon of whole beans). Start at the method’s ratio, then adjust by taste: if it’s weak or sour, use a little more coffee or grind finer; if it’s harsh or bitter, use a little less or grind coarser.
For espresso, the ratio describes the drink you get out (yield) relative to the dry dose, so an 18 g dose at 1:2 gives about 36 g of espresso.
Frequently asked questions
What is the "golden ratio" for coffee?
Many brewers start around 1 gram of coffee per 15–17 grams of water for drip and pour-over. It’s a starting point; adjust to taste.
How many grams is a cup of coffee?
A 12 fl oz mug (about 355 ml) at 1:16 needs about 22 grams of coffee.
Does cold brew use more coffee?
Yes. Concentrate is often brewed around 1:8 and then diluted with water or milk before drinking.
What sources did we use?
- Specialty Coffee Association (accessed October 23, 2026)