Drip Bags for a Large Mug Calculator

Big mug, weak coffee? Find out how many drip bags you actually need to fill a large mug without watering it down.

Grams per bag:= 10 g total
Your cup strength
1:35.0
Very weak — add a bag · 1:35 · 10 g coffee

That mug is too big for 1 bag — the cup will taste watery. Use 3 bags, or pour a smaller 150 ml for a balanced cup.

350
ml water
120
mg caffeine
195–205°F
water temp
2.5–3 min total
brew time

Caffeine is an estimate (~12 mg per gram of ground coffee). One bag brews one cup — a spent bag can't be reused.

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How many drip bags for a large mug?

One 10 g drip bag is designed for a 150 ml cup. Pour it into a full 350 ml (12 oz) mug and you're brewing at a watery 1:35. For a big mug you have two good options: use two bags for a full-strength cup, or brew a smaller ~180 ml cup from one bag and top up with hot water afterward if you want more volume without more bitterness.

Set your mug size above and the calculator tells you the exact strength you'll get — and when to reach for a second bag.

Frequently asked questions

Is one drip bag enough for a big mug?

For a 12 oz (350 ml) mug, one bag brews a thin cup. Use two bags for full strength, or make a smaller ~180 ml cup from one.

How much coffee does one drip bag make?

About 150 ml (5 oz) of balanced coffee. Stretching a single bag much past ~200 ml makes it noticeably weak.