How much coffee do I need?
Dial in your household and cup size, tap how many bags you’re buying, and see about how many days that lasts — no spreadsheet required.
Cup size (brewed coffee)
Each drink is sized in US fluid ounces. Dose follows a 1 : 16 water-to-coffee ratio — 15 g beans per 8 oz serving right now.
Coffee drinkers in household
How many people at home drink coffee about like this? (Rough head count is fine.)
8 oz drinks per person per day
Each number is how many 8 oz servings one drinker averages in a day.
How many bags are you grabbing?
We treat each bag as about 340 g of beans — a common 12 oz shelf size. Your label may differ.
About this long between grocery runs
23 days
at your pace — from 2 × ~12 oz bags, roughly 680 g of whole beans on the scale.
1 coffee drinker at home; each averages 2 8 oz servings a day.
Each serving uses about 15 grams of beans, so your household burns about 30 g per day all together.
Days are rounded from bag weight (340 g) ÷ daily use. Bags vary — check the label and tweak if your grind or ratio runs heavier or lighter.
Planning only — your grinder and brew method might want a different ratio in the cup. For dialing, see Water & extraction and Brew methods.