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AeroPress Recipe & Ratio Calculator

Use this AeroPress ratio calculator: enter your coffee amount and strength to get the exact water, bloom, and timing for standard or inverted AeroPress recipes.

Calculate your AeroPress recipe

g
1:15
Strong (1:12)Light (1:17)

Total water

Standard

255ml

Bloom pour

34ml

Total in oz

8.6oz

Plunge at

1:30-2:00

Brew timeline

Bloom

34 ml · 30s

Fill + stir

to 255 ml

Press

1:30-2:00

Coffee to water by weight

Strength

StrongLight

Next: Stronger or lighter cup? Move the strength slider and keep the rest of the recipe the same. Stop pressing at the first hiss.

Brew this with the step timer →

The math behind the calculator

The calculator applies water (ml) = coffee (g) × ratio across a 1:12–1:17 range — stronger than drip, because AeroPress recipes are often diluted or drunk concentrated depending on preference. The bloom water shown is roughly 2× the coffee weight, matching the amount needed to saturate the grounds evenly before the rest of the water goes in.

Standard and inverted methods use the same ratio math — the difference is steep control (inverted delays drip-through until you flip it), not a different formula.

How to use the result

  1. 1Enter your coffee dose and pick standard or inverted.
  2. 2Pour the bloom amount, wait 30 seconds, then fill to the total.
  3. 3Plunge at 1:30-2:00 and stop at the first hiss.

Common mistakes

  • Pressing past the hiss: extra bitterness.
  • Skipping the paper-filter rinse.
  • Brewing lighter instead of diluting a concentrated brew with hot water.

What this calculator assumes

Every fixed figure the maths uses, so you can check the result against your own gear.

  • Water is taken as 1 g per ml, so the ratio works by weight.
  • Ratio is coffee to water by weight: 1:15 means 15 g of water per 1 g of coffee.
  • The bloom uses about 2x the coffee weight in water.
  • The standard AeroPress chamber holds roughly 250 ml; larger brews need the AeroPress XL or a bypass (add water after pressing).
  • 1 fl oz = 29.57 ml.

Get a Consistent Fine-Medium Grind

AeroPress rewards a consistent grind since the steep time is short — these burr grinders handle the fine-medium range well.

Fellow Ode Gen 24.8

Fellow

Fellow Ode Gen 2 Review

A single-dose grinder built specifically for pour-over and filter coffee enthusiasts — not intended for espresso.

Turin DF64 Gen 24.8

Turin

Turin DF64 Gen 2 Review

An electric grinder with factory-aligned 64mm flat burrs and very low retention, built for single-dose espresso workflows.

The Brewer This Recipe Is For

Our review covers how the AeroPress handles standard and inverted brewing, what the paper filter changes, and who should pick something else.

AeroPress Original Coffee Maker4.6

AeroPress

AeroPress Original Coffee Maker Review

A fast, forgiving manual brewer that produces smooth, low-acid coffee for one or two cups, with plenty of room to experiment with technique.

Frequently Asked Questions

Quick answers before you buy.

What is the standard AeroPress ratio?

Most recipes fall between 1:12 and 1:15 for a concentrated brew you can drink straight or dilute, though some longer-steep recipes go as light as 1:17.

There's no single official ratio — AeroPress is flexible enough to support a wide range of styles.

Standard or inverted — does it matter?

Both produce good coffee; the difference is mainly in steep control and cleanup.

Inverted (brewing upside down, then flipping) keeps the grounds from dripping through before you're ready to press, giving more control over steep time.

Standard is simpler and has no flip step, which is easier for a quick brew.

How hard should I press?

Steady, moderate pressure over about 20-30 seconds, stopping as soon as you hear a hissing sound — that's air pushing through the nearly-empty chamber, and pressing further just adds bitter, over-extracted compounds without more coffee.

Do I need a metal or paper filter?

Paper (the standard AeroPress filter) gives a cleaner, lighter-bodied cup with less sediment; a reusable metal filter lets more oils and fine particles through for a heavier, French-press-like body.

Neither is more "correct" — it's a style preference.

How much coffee do I use in an AeroPress?

A common dose is 15-18 g of coffee.

At 1:15, 15 g takes 225 ml of water, and 18 g takes 270 ml.

Enter your dose above for the exact water and bloom amounts.

What grind size works best for an AeroPress?

Medium-fine is a good starting point, finer than pour-over and coarser than espresso.

Shorter steeps suit a finer grind and longer steeps a slightly coarser one.

If it tastes sour, grind finer or steep longer; if bitter, go coarser.

What is a good AeroPress recipe to start with?

Start with 15 g of medium-fine coffee and 225 g of water just off the boil (1:15).

Pour a small bloom, wait 30 seconds, fill to the total, stir, then press steadily over about 20 to 30 seconds.

Adjust strength with the ratio and taste with the grind.

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