For a single normal cup in an AeroPress, use 15 g of coffee to about 220 g of water — a 1:15 ratio that lands between the concentrate the AeroPress is famous for and a clean, drinkable cup. Everything else on this page is just that number scaled up or down: smaller for a stronger short cup, larger for a mug or the XL, and diluted after the press when you want more volume than the chamber can hold. Below is the full dose chart by cup size, plus how to bend the ratio for strength without wrecking extraction.
The AeroPress confuses people on ratios because it lies to you about size. The standard chamber tops out around 250 ml of water, which sounds like “one cup” but is really enough for a strong single or a diluted double. So “how much coffee per cup” depends entirely on what you’re actually doing: brewing to drink straight, or brewing a concentrate to top up with hot water. This chart covers both.
AeroPress Original
The standard chamber is the one every recipe on this page is built around. Nearly unbreakable, forgiving of grind and technique, and it makes a clean cup in under two minutes — the best-value single piece of brewing gear you can own.
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There’s one number to understand and the rest is arithmetic: the coffee-to-water ratio, written as 1:X, where X is the grams of water per gram of coffee.
- 1:12 to 1:14 is strong — concentrated, punchy, closer to the AeroPress “faux-espresso” territory. Great as a base to dilute, or for people who like it bold.
- 1:15 to 1:16 is the daily-drinker sweet spot — full-bodied but drinkable straight, similar strength to a good pour-over.
- 1:17 and up is lighter and more tea-like, which suits bright light roasts but starts to feel thin for medium and dark.
If you own a scale, you never have to memorize a chart again — pick your ratio, weigh your coffee, multiply by X for water. If you don’t own a scale, get one, because volume scoops swing your ratio by 20% depending on grind and bean density. A cheap coffee scale with a built-in timer is the single best AeroPress upgrade after the brewer itself.
The complete AeroPress dose chart
These are brew-to-drink numbers — coffee you press and drink as-is, no dilution. All use a medium-fine grind (fine table salt) and water at 185–205°F.
| What you want | Coffee | Water | Ratio | Notes |
|---|---|---|---|---|
| Small strong cup (~6 oz) | 15 g | 180 g | 1:12 | Bold, short, punchy |
| Standard cup (~8 oz) | 15 g | 220 g | ~1:15 | The everyday default |
| Bigger balanced cup | 17 g | 250 g | ~1:15 | Fills the standard chamber near max |
| Light-roast, tea-like | 14 g | 230 g | ~1:16.5 | Bright, clean, delicate |
Notice the standard chamber caps out around 250 g of water. That’s the ceiling for brew-to-drink in an Original AeroPress. Want more coffee than that? You have two options: dilute a concentrate, or step up to the XL.
Concentrate + dilute: how to get a full mug
This is the trick that makes the AeroPress punch above its size. Instead of trying to brew a 12 oz mug directly (you can’t — it won’t fit), you brew a strong concentrate in the chamber and then add hot water in the cup, exactly like an Americano.
| Mug size | Coffee | Brew water | Ratio (brew) | Add after press |
|---|---|---|---|---|
| 10 oz mug | 18 g | 150 g | ~1:8.3 | ~120 g hot water |
| 12 oz mug | 20 g | 160 g | ~1:8 | ~180 g hot water |
| 14 oz travel mug | 22 g | 180 g | ~1:8 | ~220 g hot water |
Brew the concentrate at a finer grind and a short 45–60 second steep, press, then top up in the mug to taste. The final in-cup ratio ends up around 1:15 to 1:17 — a normal-strength cup — but you got there without overflowing the chamber. This is also the best method for making coffee for two: brew one strong press, split it, dilute each cup.
AeroPress XL
Double the capacity of the standard chamber — it brews up to 20 oz (600 ml) at once and ships with a matching carafe. If you're constantly diluting concentrates to feed a mug or two people, the XL just does it in one press.
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The AeroPress XL doubles the standard chamber and, per AeroPress, brews up to 20 oz (600 ml) at once — enough for a big mug or two normal cups. The ratios don’t change; you just scale the whole recipe up.
| What you want | Coffee | Water | Ratio | Notes |
|---|---|---|---|---|
| One big 16 oz mug | 30 g | 450 g | ~1:15 | Same strength as the standard cup, bigger |
| Two 8 oz cups | 35 g | 500 g | ~1:14 | Slightly bolder to survive splitting |
| Max batch | 40 g | 580–600 g | ~1:15 | Near the XL ceiling |
Because the XL holds more water above the puck, give it a slightly longer steep (2:00–2:30) so the larger coffee bed extracts evenly, and press slowly. If you routinely make coffee for more than one person, the XL is the honest answer — trying to feed two people from the standard chamber means diluting concentrates every single morning.
How to adjust strength without breaking the cup
The mistake most people make is changing the wrong variable. If your coffee is too weak, don’t just dump in more grounds and keep the same water — that changes your ratio and your extraction unpredictably. Adjust deliberately:
- Too weak / watery? First tighten the ratio (more coffee or less water, e.g. 1:15 → 1:13). If it’s still flat, grind finer or steep longer — that’s under-extraction, not just dilution.
- Too strong / harsh? Loosen the ratio (1:13 → 1:16) or dilute in the cup. If it’s bitter rather than just intense, that’s over-extraction — grind coarser, cool the water toward 185°F, and don’t press out the last of the air.
- Too sour / thin? That’s under-extraction almost every time. Finer grind, hotter water (200–205°F), longer steep. Don’t reach for more coffee first.
Strength (ratio) and extraction (grind, temp, time) are different levers. Get in the habit of changing one at a time. If you want the full breakdown of what each variable does, our espresso ratios guide explains the same dose-to-yield thinking for shots, and it maps cleanly onto immersion brewing.
Grind is half the battle
None of these ratios work if your grind is inconsistent. A blade grinder throws a mix of dust and boulders into the chamber, so half your coffee over-extracts (bitter) while the other half under-extracts (sour) — in the same cup. That’s the muddy, can’t-quite-fix-it taste people blame on their beans.
For the AeroPress specifically you want a medium-fine, even grind for standard recipes and a finer grind for concentrates. A burr grinder is what makes that repeatable. If you’re grinding for AeroPress and don’t own one yet, start with the buyer’s guide — our best coffee grinders roundup covers real burr options at every price, and the coffee grind size chart shows exactly where AeroPress sits relative to pour-over and espresso.
Baratza Encore
A real burr grinder with 40 settings and repairable parts. It nails the medium-fine consistency AeroPress ratios depend on, and it covers pour-over and French press too — the safe first grinder for almost anyone.
Check price on Amazon → We earn a commission if you buy through this link, at no extra cost to you.Quick reference: the whole chart in one place
If you remember nothing else, remember these four:
- One normal cup: 15 g coffee, 220 g water (1:15).
- One strong short cup: 15 g coffee, 180 g water (1:12).
- A full mug: brew 20 g in 160 g water, then add ~180 g hot water in the cup.
- XL big batch: 30 g coffee, 450 g water (1:15), 2:00–2:30 steep.
Start at 1:15, taste, and move one notch stronger or weaker until it’s your cup. The AeroPress is forgiving enough that you’ll land it within two or three brews.
Who this chart is for — and who can ignore it
Use these ratios if you drink one or two cups at a time, want repeatable results without babysitting a pour-over, or travel and want one brewer that does everything. The AeroPress rewards weighing your coffee more than almost any other method because the chamber is small and errors show up fast.
You can skip the precision if you’re brewing for a crowd every morning — at that point a batch brewer or a larger immersion setup is less fiddly than pressing multiple times. And if you already brew by feel and love your cup, don’t let a chart talk you out of what works. Ratios are a starting point, not a rulebook.
If you’re new to the brewer entirely, pair this with our complete AeroPress guide for the standard-vs-inverted breakdown and step-by-step technique. Dial the method first, then use this page to size it to whatever cup you’re holding.
Next: the AeroPress recipes that break the ratio rules on purpose — extra-long steeps for light roasts and bypass brewing for clarity.