How many grams of coffee per 9oz cup?

The Specialty Coffee Association (SCA) recommends a coffee-to-water ratio of 1:17, which means 1 gram of coffee for every 17 grams of water. Since 9oz is equivalent to 266 grams, we divide the total water weight (266 grams) by 17 (coffee-to-water ratio) to find the recommended dosage.

Recommended dosage = Total water weight / Coffee-to-water ratio

Recommended dosage = 266 grams / 17

Recommended dosage = 15.647 grams

Since most people use rounded measurements, it's common to use 14 grams of coffee for a 9oz cup of coffee.