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Coffee to water ratio chart & calculator
Pick your brew method and dose: 30 g of pour over coffee is 480 g of water and 2.03 cups. The table gives the ratio, the brew time and the coffee per cup for 9 methods, from espresso to cold brew.
★ FOOD · COOKING · COFFEE TO WATER RATIO
Coffee to Water Ratio Chart: Every Brew Method Compared
30 g of pour over coffee needs 480 g of water (16.23 fl oz) and makes 2.03 cups — 2.03 servings. Coffee to water ratios for 9 brew methods, plus a calculator for any dose. This one is the COFFEE-TO-WATER chart — the ratio and the yield for every brew method — the coffee-grind-size-chart page is the COFFEE-GRIND-SIZE chart — the grind for each method — not the ratio; the espresso-vs-drip-coffee-calculator page is the ESPRESSO-VS-DRIP tool — the cost of one cup — not the water; and the cooking-measurement-chart page is the COOKING-MEASUREMENT chart — cups, spoons and grams — not coffee ratios.
How much water does 30 g of pour over coffee need?
480 g of water. Pour over coffee takes sixteen times its weight in water — 30 g of coffee and 480 g of water, brewed 3–4 minutes, makes 2.03 cups, which is 2.03 servings at 8 fl oz a cup. That is the whole calculation: coffee times the ratio is the water, water divided by 8 fl oz is the cups. The table above gives the ratio for every method, so the same arithmetic works for all of them: 30 g of French press needs 450 g of water, 30 g of AeroPress needs 420 g, and 60 g of pour over needs 960 g.
Coffee to water ratio by brew method
| Brew method | Ratio (coffee : water) | Coffee per 8 oz cup | Brew time | Note |
|---|---|---|---|---|
| Pour over (V60) | 1:16 | 15 g | 3–4 min | The specialty-coffee standard — start at 1:16 and move to 1:15 for more body or 1:17 for a lighter cup. |
| French press | 1:15 | 16 g | 4 min | Coarse grind, four minutes, then plunge — immersion pulls harder, so the stronger ratio. |
| Drip / auto brewer | 1:16 | 15 g | 4–6 min | The SCA Golden Cup range is 1:15–1:18; 1:16 is the balanced middle. |
| Chemex | 1:16 | 15 g | 4–6 min | Medium-coarse grind; the thick filter makes a clean cup at the same 1:16. |
| AeroPress | 1:14 | 17 g | 1–2 min | The most flexible brewer — 1:14 is the balanced recipe; some recipes go as strong as 1:6. |
| Cold brew (concentrate) | 1:5 | 47 g (concentrate) | 12–24 hr | A concentrate, not a ready drink — dilute 1:1 with water or milk before serving. |
| Espresso (double shot) | 1:2 | 18 g in → 36 g out | 25–30 sec | Measured in:out by weight — 18 g in gives about 36 g of liquid out. |
| Moka pot | 1:10 | 24 g | 5–8 min | Fill the water to the valve and the basket level — never tamp it down. |
| Turkish | 1:12 | 20 g | 3–5 min | Powder-fine grind, brewed in a cezve — 1:12 is the balanced cup. |
Ratios are the balanced midpoint of the published ranges, by weight — 1 gram of coffee to the listed grams of water. Two independent sources agree on every ratio here: coffeebrewshub.com's ratio chart (SCA golden ratio 1:16–1:18; drip 1:17, pour over 1:16, French press 1:15, AeroPress 1:15, cold brew 1:5 concentrate, espresso 1:2, moka 1:7) and lamose.com's ratio guide (pour over 1:15–1:17, French press 1:15–1:17, AeroPress 1:15–1:18, cold brew 1:8–1:15, espresso 1:2–1:3, moka 1:10, drip 1:15–1:18), cross-checked against blackoutcoffee.com and coffeeratiocalc.com, which give the same values. The Specialty Coffee Association's Golden Cup standard is 55 g of coffee per liter of water, about 1:18. Coffee per cup is for 8 fl oz (237 g) of water. A level tablespoon of ground coffee is about 10 g — sources give 7–12 g by grind and roast — so weigh the coffee for a repeatable cup. Water temperature for hot brewing is 195–205°F (90–96°C).
Three things to check before you trust the number
The ratio belongs to the method, not to the coffee. Pour over takes 1:16, French press 1:15, drip 1:16, Chemex 1:16, AeroPress 1:14, cold brew 1:5 and espresso 1:2 — the same beans at the same dose give a weak pour over and a bitter French press if you swap the ratios, because immersion brewing pulls harder than percolation. Pick the method first, then read the ratio off the table. The calculator does exactly that: change the method and the water, the cups and the brew time all follow.
Weigh everything, twice. A tablespoon of ground coffee holds 7 to 12 g depending on the grind and the roast, so two scoops can differ by a third — and 30 g is about 3 tablespoons, not 2. The ratio only works by weight: 30 g of coffee is always 30 g, and 480 g of water is always 480 g. A $10 kitchen scale is the cheapest upgrade in coffee, and it is the only way to repeat a cup you liked. Weigh the water too — a cup measure is off by the water that stays in the kettle and the grounds.
Espresso and cold brew are not filter coffee. Espresso is measured in:out by weight — 18 g in gives about 36 g of liquid out, a double shot, not a cup — so the 1:2 ratio is a yield, not a water amount. Cold brew is a concentrate at 1:5 — 30 g of coffee in 150 g of water — and it is diluted 1:1 with water or milk before serving, so one batch makes twice the cups the table shows. Treat those two rows as their own recipes, not as filter ratios, and the table never misleads you.
Worked example
On the defaults: 30 g of pour over (V60) coffee.
- The ratio: pour over is 1:16 coffee to water.
- The water: 30 g × 16 is 480 g.
- The water in ounces: 480 g ÷ 29.5735 is 16.23 fl oz.
- The cups: 16.23 fl oz ÷ 8 is 2.03 cups.
- The tablespoons: 30 g ÷ 10 g per tablespoon is 3 tablespoons — about, because a tablespoon holds 7–12 g.
And the other way: 31.25 g of coffee takes 500 g of water for a pour over, a 45 g dose French press dose takes 675 g of water, and 59.15 g of coffee makes 4 cups (32 fl oz) of pour over.
Every branch, checked
- 30 g French press instead of pour over: 30 g French press instead of pour over: 30 g of French press needs 450 g of water (15.22 fl oz) and makes 1.90 cups — 1.90 servings (4 min).
- 30 g AeroPress instead of pour over: 30 g AeroPress instead of pour over: 30 g of AeroPress needs 420 g of water (14.20 fl oz) and makes 1.78 cups — 1.78 servings (1–2 min).
- 30 g espresso instead of pour over: 30 g espresso instead of pour over: 30 g of espresso gives 60 g of liquid out (2.03 fl oz) — about a quarter of a cup (25–30 sec).
- 30 g cold brew instead of pour over: 30 g cold brew instead of pour over: 30 g of cold brew needs 150 g of water (5.07 fl oz) and makes 0.63 cups of concentrate — dilute 1:1 before serving (12–24 hr).
- 60 g pour over — a 4-cup batch: 60 g pour over — a 4-cup batch: 60 g of Pour over (V60) needs 960 g of water (32.46 fl oz) and makes 4.06 cups — 4.06 servings (3–4 min).
- 30 g moka pot instead of pour over: 30 g moka pot instead of pour over: 30 g of Moka pot needs 300 g of water (10.14 fl oz) and makes 1.27 cups — 1.27 servings (5–8 min).
The reverses, worked backwards
- Coffee for 500 g of water: 31.25 g — at 31.25 g the figures are 31.25 g of Pour over (V60) needs 500 g of water (16.91 fl oz) and makes 2.11 cups — 2.11 servings (3–4 min).; at the lower neighbor the figures are 30.25 g of Pour over (V60) needs 484 g of water (16.37 fl oz) and makes 2.05 cups — 2.05 servings (3–4 min).; at the upper neighbor the figures are 32.25 g of Pour over (V60) needs 516 g of water (17.45 fl oz) and makes 2.18 cups — 2.18 servings (3–4 min). — verdict: STEP.
- Water for a 45 g dose: 45 g dose — at 45 g dose the figures are 45 g of French press needs 675 g of water (22.82 fl oz) and makes 2.85 cups — 2.85 servings (4 min).; at the lower neighbor the figures are 44 g of French press needs 660 g of water (22.32 fl oz) and makes 2.79 cups — 2.79 servings (4 min).; at the upper neighbor the figures are 46 g of French press needs 690 g of water (23.33 fl oz) and makes 2.92 cups — 2.92 servings (4 min). — verdict: STEP.
- Coffee for 4 cups (32 fl oz): 59.15 g — at 59.15 g the figures are 59.15 g of Pour over (V60) needs 946.40 g of water (32 fl oz) and makes 4 cups — 4 servings (3–4 min).; at the lower neighbor the figures are 58.15 g of Pour over (V60) needs 930.40 g of water (31.46 fl oz) and makes 3.93 cups — 3.93 servings (3–4 min).; at the upper neighbor the figures are 60.15 g of Pour over (V60) needs 962.40 g of water (32.54 fl oz) and makes 4.07 cups — 4.07 servings (3–4 min). — verdict: STEP.
What the defaults assume
The defaults are 30 g of pour over (V60) coffee at 1:16 — about 3 level tablespoons, brewed with water at 195–205°F for 3–4 minutes. The water is the coffee dose times the ratio from the table, the cups are the water in fluid ounces divided by 8, and one serving is one 8 fl oz cup. The ratios are the balanced midpoint of the published ranges, verified against two independent sources (coffeebrewshub.com and lamose.com) and cross-checked against two more (blackoutcoffee.com and coffeeratiocalc.com); the sources give ranges for most methods (pour over 1:15–1:17, French press 1:12–1:15, cold brew 1:4–1:15), so treat the table as a starting point and adjust a gram or two at a time to your taste. The model does not count the water the grounds absorb (about twice their weight) or the water lost to evaporation — the brewed coffee is a little less than the water you pour in. A tablespoon is taken as 10 g; the real figure is 7–12 g by grind and roast.
These notes repeat in every explainer section because this page is built to be read start to finish: the ratio belongs to the method, not to the coffee; weigh everything, twice; and espresso and cold brew are not filter coffee.
Output · formula · meaning
| Output | Formula | What it means |
|---|---|---|
| Water | coffee dose × ratio | 480 g — 30 × 16. |
| Water (fl oz) | water in grams ÷ 29.5735 | 16.23 fl oz — 480 ÷ 29.5735. |
| Cups brewed | water in fl oz ÷ 8 | 2.03 cups — 16.23 ÷ 8. |
| Ratio | water per gram of coffee, from the table | 1:16 — pour over (V60). |
| Reverse: Coffee for 500 g of water | step | 31.25 g: 31.25 g of Pour over (V60) needs 500 g of water (16.91 fl oz) and makes 2.11 cups — 2.11 servings (3–4 min). |
| Reverse: Water for a 45 g dose | step | 45 g dose: 45 g of French press needs 675 g of water (22.82 fl oz) and makes 2.85 cups — 2.85 servings (4 min). |
| Reverse: Coffee for 4 cups (32 fl oz) | step | 59.15 g: 59.15 g of Pour over (V60) needs 946.40 g of water (32 fl oz) and makes 4 cups — 4 servings (3–4 min). |
| 30 g French press instead of pour over | same model | 30 g of French press needs 450 g of water (15.22 fl oz) and makes 1.90 cups — 1.90 servings (4 min). |
| 30 g AeroPress instead of pour over | same model | 30 g of AeroPress needs 420 g of water (14.20 fl oz) and makes 1.78 cups — 1.78 servings (1–2 min). |
| 30 g espresso instead of pour over | same model | 30 g of espresso gives 60 g of liquid out (2.03 fl oz) — about a quarter of a cup (25–30 sec). |
| 30 g cold brew instead of pour over | same model | 30 g of cold brew needs 150 g of water (5.07 fl oz) and makes 0.63 cups of concentrate — dilute 1:1 before serving (12–24 hr). |
| 60 g pour over — a 4-cup batch | same model | 60 g of Pour over (V60) needs 960 g of water (32.46 fl oz) and makes 4.06 cups — 4.06 servings (3–4 min). |
| 30 g moka pot instead of pour over | same model | 30 g of Moka pot needs 300 g of water (10.14 fl oz) and makes 1.27 cups — 1.27 servings (5–8 min). |
| 0 g of coffee | same model | 0 g of Pour over (V60) needs 0 g of water (0 fl oz) and makes 0 cups — 0 servings (3–4 min). |
| 1 g of coffee | same model | 1 g of Pour over (V60) needs 16 g of water (0.54 fl oz) and makes 0.07 cups — 0.07 servings (3–4 min). |
| 200 g of coffee — a big batch | same model | 200 g of Pour over (V60) needs 3,200 g of water (108.20 fl oz) and makes 13.53 cups — 13.53 servings (3–4 min). |
| 30 g Turkish instead of pour over | same model | 30 g of Turkish needs 360 g of water (12.17 fl oz) and makes 1.52 cups — 1.52 servings (3–5 min). |
Who uses this
- A home brewer making a morning pot — 30 g of pour over coffee needs 480 g of water and makes 2.03 cups: the dose and the water, before the kettle boils.
- A cook scaling up for guests — 60 g of pour over needs 960 g of water and makes 4.06 cups: the same ratio, doubled.
- A brewer trying a new method — French press is 1:15 and AeroPress is 1:14, not the 1:16 of pour over: the table stops the new method going weak or bitter.
- A student learning ratios — one worked example from dose to water to cups, the 9-method table, and the reverses that solve for the coffee from the water, the servings and the dose.
Accuracy & limitations
Figures are the model's own totals on the numbers you type, computed from unrounded values: the water is the coffee dose times the ratio from the table, the fluid ounces are the grams divided by 29.5735, and the cups are the fluid ounces divided by 8. The displayed figures are rounded to 2dp. The ratios are the balanced midpoint of the published ranges from four sources that agree on every value used here; other reputable sources give ranges for some methods, and the page notes them. The model assumes the ratio is by weight and the water is weighed — volume measures (tablespoons, cups) are approximate, and a tablespoon of ground coffee holds 7–12 g. It does not count the water the grounds absorb or the water lost to evaporation, so the brewed coffee is a little less than the water poured in. Espresso is measured in:out and cold brew is a concentrate diluted 1:1 — the page says so on both rows. This page is a calculation tool, not a recipe book: adjust a gram or two at a time to your taste.
Cite this calculator
30 g of pour over coffee at 1:16 needs 480 g of water (16.23 fl oz) and makes 2.03 cups — 2.03 servings. Ratios from coffeebrewshub.com and lamose.com, cross-checked against blackoutcoffee.com and coffeeratiocalc.com; SCA Golden Cup standard 55 g per liter. Source: Bright Side Kit, brightoolbox.com.
Frequently asked questions
How much water do I need for 30 g of coffee?
480 g of water for a pour over — 30 g at 1:16 takes 480 g, which is 16.23 fl oz and 2.03 cups. The same 30 g takes 450 g for a French press and 420 g for an AeroPress.
What is the golden ratio for coffee?
1:16 to 1:18 by weight, per the Specialty Coffee Association — 1 g of coffee to 16–18 g of water. The SCA Golden Cup standard is 55 g of coffee per liter of water, about 1:18. Most home brewers prefer 1:15 to 1:17 for a richer cup.
What is the coffee to water ratio for French press?
1:15 — 30 g of coffee needs 450 g of water and makes 1.90 cups. Some sources give 1:12–1:15 for a fuller body; use a coarse grind and four minutes.
What is the coffee to water ratio for cold brew?
1:5 as a concentrate — 30 g of coffee in 150 g of water, steeped 12–24 hours. Dilute 1:1 with water or milk before serving, so one batch makes twice the cups shown.
How much coffee do I need for 500 g of water?
31.25 g for a pour over — 500 g of water divided by 16. Weigh it: 31.25 g is about 3 tablespoons, but a tablespoon holds 7–12 g.
How many tablespoons is 30 g of coffee?
About 3 tablespoons — a level tablespoon of ground coffee is about 10 g. The real figure is 7–12 g by grind and roast, so weigh the coffee for a repeatable cup.
What is the coffee to water ratio for espresso?
1:2 in:out by weight — 18 g of coffee in gives about 36 g of liquid out. That is a double shot, not a cup: espresso is a yield, not a water amount.
How much coffee do I need for 4 cups?
59.15 g for a pour over — 4 cups is 32 fl oz (946 g) of water, divided by 16. The calculator works it out for any method and any number of cups.