Coffee-to-Water Ratio Calculator

Dial in the Perfect Does - Every Single Bew

Whether you’re pulling espresso, pouring a V60 or cold-brewing overnight, the coffee-to-water ratio is the single most important variable you control. Choose your brew method, enter your dose, and get the exact water volume for a perfect extraction every time.

Dial In the Perfect Dose — Every Single Brew

Choose your brew method, enter your dose, and get the exact water volume for a perfect extraction every time.

Choose Your Brew Method

Enter Your Measurements

Strength / Ratio 1:2.5

StrongBalancedLight

Your Perfect Brew

18.0

grams of coffee

ml of water (yield)

For a balanced espresso at 1:2.5 ratio.

Balanced

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Standard Coffee-to-Water Ratios by Brew Method

Use these as starting points — then adjust to taste

Method	Ratio Range	Coffee (per 300ml water)	Grind	Notes
Espresso Popular	1:2 – 1:2.5	18g dose → 36–45g yield	Fine	Ratio measured by liquid output, not input water. 25–30s extraction.
Moka Pot	1:7 – 1:10	30 – 42g	Medium-fine	Don't tamp. Fill basket level, water to just below valve, low-medium heat.
AeroPress	1:6 – 1:14	21 – 50g	Medium-fine	Very flexible — use 1:6 for concentrate, 1:12 for standard cup.
French Press	1:12 – 1:16	19 – 25g	Coarse	Steep 4 minutes then plunge slowly. Decant immediately.
Siphon / Vacuum	1:14 – 1:17	17.6 – 21g	Medium	Produces clean, tea-like body. Steep 60–90s before drawdown.
Electric Percolator	1:14 – 1:17	17.6 – 21g	Coarse	Avoid over-extraction — remove from heat as soon as cycle finishes.
Pour Over (V60) Popular	1:15 – 1:17	17.6 – 20g	Medium-fine	Bloom 30–45s. Bright, clean cup — ideal for single origins.
Chemex	1:15 – 1:17	17.6 – 20g	Medium-coarse	Thick filter yields a very clean cup. 4:00–5:00 total brew time.
Kalita Wave	1:15 – 1:17	17.6 – 20g	Medium	Flat bed gives even extraction and high repeatability.
Batch Brew	1:15 – 1:18	16.7 – 20g	Medium	Scales linearly. Lean stronger for milk-based drinks.
Cold Brew	1:4 – 1:8	37.5 – 75g	Coarse	Steep 12–24 hrs. 1:4–1:5 is concentrate — dilute before serving.
Turkish	1:10 – 1:12	25 – 30g	Extra-fine (powder)	Brewed in a cezve. Grounds stay in the cup — don't stir before drinking.
Cowboy	1:15 – 1:18	16.7 – 20g	Coarse	Simmer, rest, then pour carefully leaving grounds in the pot.

How to Dial In Your Coffee

The SCA Golden Ratio

The Specialty Coffee Association recommends 1g of coffee per 15–17ml of water for filter brewing (55–65g per litre). This produces coffee at roughly 1.2–1.4% total dissolved solids (TDS) — the sweet spot for clarity and balance. Start here, then adjust to taste.

When Your Cup Tastes Off

Thin, weak, or sour? Your ratio is too low — try adding 1–2g more coffee. Bitter, harsh, or dry? Your ratio is too high — reduce your dose slightly. Remember: ratio affects strength and extraction simultaneously. Always lock in your ratio before adjusting grind size or water temperature.