Drip & Dose

The Coffee to Water Ratio for Every Brewing Method

How much coffee to use for drip, pour-over, French press, cold brew and espresso, from the National Coffee Association's own numbers, with a worked chart in grams and tablespoons and the one cheap tool that makes it repeatable.

By Stephen V.Last updated How we choose

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A lot of home coffee is one ratio away from being better coffee. Not a new machine, not expensive beans: just the right amount of coffee for the amount of water, used the same way every morning. This page is the reference for that number, method by method, using the figures the National Coffee Association publishes rather than anyone’s rule of thumb.

The short version, if that is all you need:

  • Drip coffee maker:1 to 2 tablespoons of ground coffee for every 6 oz of water — the NCA’s “Golden Ratio”.
  • Pour-over:1 gram of coffee to 13–16 grams of water (1:13 to 1:16).
  • French press:1 gram of coffee to 10–16 grams of water (1:10 to 1:16).
  • Cold brew:1 gram of coffee to 4–5 grams of water (1:4 to 1:5) — a concentrate, not a ready-to-drink cup.
  • Espresso:1 gram of dry coffee to 2 grams of espresso in the cup (1:2) — measured on the way out, not the way in.
  • Moka pot: there is no ratio to choose. The pot sets it (more on that below).

What a coffee to water ratio actually means

A ratio like 1:16 means one part coffee to sixteen parts water, by weight. Twenty grams of coffee at 1:16 wants 320 grams of water (20 × 16). Going the other way, if you know how much water you are using, divide it by the second number: 500 grams of water at 1:16 needs 31.25 grams of coffee (500 ÷ 16).

The smaller the second number, the stronger the coffee. 1:13 uses more coffee for the same water than 1:16, so it makes a stronger cup. That is the whole idea behind the NCA’s ranges: the low end is the strong end, the high end is the lighter end, and anywhere inside is a reasonable cup.

The water side is easier than it sounds. The U.S. Geological Survey puts the density of water at “roughly 1 gram per milliliter”, so 320 grams of water is, for kitchen purposes, 320 mL. If they own a measuring jug but no scale big enough for the water, the jug will do. It is the coffee that really needs weighing, for reasons that come up in a moment.

One more detail: for every method except espresso, the ratio describes the water you pour in, not the coffee you end up with. The wet grounds keep some of it, so the cup is always a little smaller than the water you started with.

The NCA’s ratios by brewing method

Every figure below is the National Coffee Association’s, from its consumer brewing guides, with its contact time for each method alongside.

MethodNCA ratioIn plain termsContact time
Drip coffee maker1–2 tbsp per 6 oz1 to 2 tablespoons of ground coffee for every 6 oz of water (the “Golden Ratio”)About 5 minutes
Pour-over1:13 to 1:161 g of coffee to 13–16 g of water2–4 minutes
French press1:10 to 1:161 g of coffee to 10–16 g of waterRoughly 4 minutes
Cold brew1:4 to 1:51 g of coffee to 4–5 g of water, which makes a concentrateApproximately 12 hours
Espresso1:21 g of dry coffee to 2 g of brewed espresso in the cup20–30 seconds

Worked chart: how much coffee for the water you’re using

This is the calculator, done in advance. Each cell is the water divided by the two ends of the NCA range for that method, rounded to one decimal place — for example, 500 g ÷ 16 = 31.3 g and 500 g ÷ 13 = 38.5 g. The first number in each cell is the lighter end, the second the stronger end.

WaterPour-over (1:16 to 1:13)French press (1:16 to 1:10)Cold brew (1:5 to 1:4)
240 g (about 1 cup)15.0–18.5 g15.0–24.0 g48–60 g
360 g (about 12 fl oz)22.5–27.7 g22.5–36.0 g72–90 g
500 g31.3–38.5 g31.3–50.0 g100–125 g
1,000 g (1 liter)62.5–76.9 g62.5–100 g200–250 g

Cup and fluid-ounce equivalents from NIST (240 mL is about 1 cup; 30 mL is about 1 fl oz), with water taken as roughly 1 g per mL (USGS).

Drip coffee makers: the Golden Ratio in tablespoons

Drip is the one method the NCA gives in spoons rather than grams: 1 to 2 tablespoons of ground coffee for every 6 oz of water. That is the answer to the everyday question of how much coffee to put in a coffee maker, so here it is scaled up to the amounts people actually brew:

Water in the reservoirGround coffee (NCA Golden Ratio)
6 fl oz (about 180 mL)1–2 tablespoons
12 fl oz (about 360 mL)2–4 tablespoons
24 fl oz (about 720 mL, or 3 cups)4–8 tablespoons
36 fl oz (about 1,080 mL)6–12 tablespoons
48 fl oz (about 1,440 mL, or 6 cups)8–16 tablespoons (16 is a full cup measure)

The milliliter figures come from NIST’s kitchen equivalents, which put 6 fl oz at about 180 mL and 24 fl oz at about 720 mL, or three cups. A cup measure is about 240 mL and a tablespoon about 15 mL, which is why sixteen tablespoons make one cup — handy when a big pot calls for a dozen or more.

Two catches. First, the NCA’s 6 oz is not a mug: NIST puts 6 fl oz at three-quarters of a cup. And the “cup” lines on a coffee maker’s carafe are the manufacturer’s own unit, so it is worth measuring the water once with a measuring jug rather than trusting the markings. Second, the Golden Ratio’s own range is wide — two tablespoons is twice as much coffee as one — which is why it is a starting point, not a recipe. If they brew with an automatic machine, best drip coffee makers covers the machines themselves.

We have deliberately not converted those tablespoons into grams. A tablespoon of coffee weighs a different amount depending on how finely it is ground, how darkly it is roasted and how heaped the spoon is, so any single conversion would be a guess. If you want to know for their coffee, weigh one level tablespoon of it once. Then you know.

How much coffee per cup?

It depends on what “a cup” means, which is the source of most of the confusion. Using the NCA’s drip ratio and NIST’s cup:

  • Per 6 oz of water(the NCA’s unit): 1 to 2 tablespoons.
  • Per 8 oz measuring cup(about 240 mL): a little over 1 to a little under 3 tablespoons — 8 ÷ 6 × 1 is about 1.3, and 8 ÷ 6 × 2 is about 2.7.
  • Per 12 oz mug(about 360 mL): 2 to 4 tablespoons, because 12 oz is exactly two of the NCA’s 6 oz units.
  • By weight, for pour-over: 15 to 18.5 grams of coffee for a 240 g cup of water, straight from the chart above.

If they only ever make one mug at a time, the brewer matters as much as the ratio — best coffee makers for one person covers the machines built for a single cup.

Espresso counts the other way

Espresso is the exception that trips people up. The NCA’s 1:2 is dry coffee to brewed espresso — the weight of what comes out, not the water that goes in. If someone doses 18 grams of coffee, they are aiming for about 36 grams of espresso in the cup (18 × 2), and the shot should take 20 to 30 seconds. A tablespoon or a measuring jug cannot help with that; only a scale under the cup can.

That is also why espresso is the most demanding job for a scale: it has to fit on the drip tray and keep up with a shot that is over in half a minute. Our how to make espresso at home guide builds the whole method around that ratio.

Moka pots: the pot sets the ratio

None of the NCA figures above covers a moka pot, and there is a good reason nobody needs one. Bialetti’s instructions are to fill the base with water no higher than the safety valve — going past it risks “making a coffee that is too watery” — and to “generously fill the funnel with ground coffee for Moka up to the edge”, without mounding or pressing it. The pot’s own chambers fix the amounts.

So with a moka pot, the levers are the coffee and the grind, which Bialetti says should be a medium grain, “coarser than the blend for espresso”. Our best coffee for a moka pot page covers which bags suit it, and best moka pots covers the pots.

Why weighing beats scoops

Every ratio above except drip is written in grams, and there is a practical reason. A scoop measures volume, and the same scoop holds a different weight of coffee depending on the grind, the roast and how heaped it is. Two people using “two scoops” can be making noticeably different coffee, and the same person can drift from week to week without knowing why the Tuesday pot came out better than the Friday one.

A scale removes that. Put the brewer on the scale, zero it, add the coffee, zero it again, and pour the water. The recipe is now something that can be written down and repeated exactly — and, just as importantly, changed one thing at a time. If the coffee is too weak, they move from 1:16 to 1:15 and know that is the only thing that changed.

What to look for in a coffee scale

A coffee scale is a small, cheap object, but a kitchen scale is not quite the same thing. Four features matter, in this order:

  • A 0.1 g readout.Coffee doses are small — the chart above puts one cup of pour-over at 15 to 18.5 grams. A scale that only shows whole grams can be out by up to half a gram either way, which on a 15 g dose is about 3% of the coffee. All three picks below read to 0.1 g.
  • A built-in timer.Time is the other half of every recipe: the NCA gives 2–4 minutes for pour-over, roughly 4 for a French press and 20–30 seconds for espresso. Weight and time on one display beats a scale plus a phone balanced next to a kettle.
  • A size that fits the brewer.It needs to sit under a dripper or, for espresso, on a machine’s drip tray, and still be readable with a brewer on top.
  • Speed, only if they make espresso. A pour-over takes minutes, so almost any brew scale keeps up. A 20-to-30-second shot does not wait, and one of the picks below is honest in its write-up that it is not fast enough to track a live shot precisely.

Everything beyond that — flow-rate readouts, apps, guided recipes — is a nice extra for an enthusiast and irrelevant for someone learning to measure. Our full best coffee scales roundup covers those. For getting a ratio right, the three below are plenty.

Quick picks

Sorted by who each one suits, with a live price you can act on. Tap a row to jump to the full write-up. We haven’t lab-tested these — here’s exactly what we do instead.

#ProductBest forPrice
1
Greater Goods Coffee Scale with Timer

Greater Goods Coffee Scale with Timer

A 0.1 g brew scale with a built-in timer at a price where buying one stops being a decision. It does the one thing that matters — weigh the coffee, weigh the water, count the seconds — without a companion app.

Best first scale
$29.99 · View on Amazon

Price as of September 17, 2026. #ad How we’re funded

2
Weightman Espresso Scale with Timer

Weightman Espresso Scale with Timer

A tiny 0.1g scale with a built-in timer that fits on a drip tray — the cheapest way to make someone's coffee suddenly consistent. Punches absurdly above its price.

Cheapest way to start weighing
$13.99 · View on Amazon

Price as of September 17, 2026. #ad How we’re funded

3
Hario V60 Drip Scale

Hario V60 Drip Scale

Hario's own brew scale with timer, sized for pour-over and trusted by the specialty crowd. A tidy, brand-name upgrade over a kitchen scale.

Best for pour-over
$46.11 · View on Amazon

$60.0023% off

Price as of September 17, 2026. #ad How we’re funded

The scales in full

#1Best first scale

Greater Goods Coffee Scale with Timer

A 0.1 g brew scale with a built-in timer at a price where buying one stops being a decision. It does the one thing that matters — weigh the coffee, weigh the water, count the seconds — without a companion app.

Great gift for: The right gift for someone who eyeballs their coffee with a spoon and wonders why some mornings taste better than others.

What’s good

  • 0.1 g resolution and a timer for less than most kitchen scales
  • Simple two-button operation with nothing to pair or charge up first
  • Small enough to sit under a dripper or a portafilter

Worth knowing

  • Not fast enough to track a live espresso shot precisely
  • Skip it if they already own any scale with a 0.1 g readout
TypeBrew scale with timer
Precision0.1 g
Best forPour-over, French press

Specs read from the product listing, on August 11, 2026. Prices are pulled live and dated on the button.

#2Cheapest way to start weighing

Weightman Espresso Scale with Timer

A tiny 0.1g scale with a built-in timer that fits on a drip tray — the cheapest way to make someone's coffee suddenly consistent. Punches absurdly above its price.

Great gift for: A small, genuinely useful stocking-stuffer for anyone brewing espresso or pour-over.

What’s good

  • 0.1g precision and a brew timer
  • Small enough to sit under a portafilter
  • Costs almost nothing for the utility

Worth knowing

  • Basic build and no frills
  • Skip it if they already own a coffee scale
TypeCoffee scale with timer
Precision0.1 g
Best forEspresso + pour-over

Specs read from the product listing, on July 25, 2026. Prices are pulled live and dated on the button.

#3Best for pour-over

Hario V60 Drip Scale

Hario's own brew scale with timer, sized for pour-over and trusted by the specialty crowd. A tidy, brand-name upgrade over a kitchen scale.

Great gift for: For the pour-over drinker who wants the matching Hario scale for their V60.

What’s good

  • Timer and weight in one, tuned for brewing
  • Trusted specialty-coffee brand
  • Clean, low-profile design

Worth knowing

  • Costs more than generic brew scales
  • Skip it if a basic Weightman scale would do the job for less
TypeDrip/brew scale with timer
Precision0.1 g
Best forPour-over

Specs read from the product listing, on July 25, 2026. Prices are pulled live and dated on the button.

Adjusting the ratio to taste

Start in the middle of the NCA range for their method and change one thing at a time. For a pour-over or a French press, 1:16 is the lighter end; moving to 1:15 and then 1:14 makes the cup stronger in small, noticeable steps. If it tastes too strong, go the other way. Staying inside the published range keeps every step a reasonable cup.

It is worth knowing what the ratio does not fix. The ratio controls strength — how much coffee is in the water. A cup that is bitter or sour at a sensible ratio usually has a grind or timing problem instead, and changing the ratio to cover it just makes a stronger bad cup. The coffee grind size guide covers the grind side, and the method guides for pour-over, French press and cold brew walk through the rest of each recipe.

When they find a ratio they like, write it down with the grind setting and the time. That note is worth more than any single piece of equipment.

Common ratio mistakes

  • Trusting the carafe’s cup lines.A carafe’s “cup” is whatever the manufacturer decided it is, and it may match neither a measuring cup nor the NCA’s 6 oz. Measure the water once.
  • Heaped scoops. A heaped scoop and a level one can differ by a lot. If they must use a scoop, level it every time.
  • Using the espresso ratio for everything else. 1:2 is coffee to espresso out. Applied to water going into any other brewer, it would be absurdly strong.
  • Drinking cold brew concentrate straight.At 1:4 there is four times as much coffee per gram of water as at 1:16 (16 ÷ 4). It is meant to be diluted, and how to make cold brew coffee covers how.
  • Forgetting to zero the scale. Weighing the coffee with the dripper and filter still counted adds their weight to the dose. Zero with the empty brewer on, then add coffee.
  • Scaling a recipe by eye. Doubling the water for a second person means doubling the coffee too. The chart above does the arithmetic.

How far does a bag of coffee go?

A useful question when you are buying beans as a present. NIST puts an ounce by weight at about 28 grams, so a 12 oz bag holds about 336 grams of coffee (12 × 28). A 12 oz mug is about 360 grams of water. At 1:16 that mug takes 22.5 grams of coffee, so the bag makes about 15 mugs (336 ÷ 22.5 = 14.9); at the stronger 1:13 it takes 27.7 grams and the bag makes about 12 (336 ÷ 27.7 = 12.1). For a French press at the strong end, 1:10, it is closer to 9.

In other words, a 12 oz bag is roughly two weeks of one mug a day — which sits comfortably inside the one to three weeks the NCA gives for whole beans at room temperature. For a household that drinks more, a larger bag; for one person, 12 oz is about right. Our how to store coffee beans guide covers keeping the last mug as good as the first.

A scale is the cheapest upgrade you can give

For a gift buyer, this whole page comes down to one small object. A brew scale with a timer sits at the budget end of coffee gifts, it is the kind of thing people tend not to buy for themselves, and it makes every other piece of equipment they own more consistent. Pair one with a bag of beans and a note of their ratio from the chart above and it is a complete, thoughtful present. If they brew pour-over, the Hario is the scale made for it and the matching one for a V60 — Kalita Wave vs Hario V60 compares those drippers — and for more small gifts in the same spirit, best coffee gadgets and coffee stocking stuffers have the rest.

Frequently asked questions

What is the best coffee to water ratio?

It depends on the brewing method. The National Coffee Association gives 1:13 to 1:16 for pour-over, 1:10 to 1:16 for a French press, 1:4 to 1:5 for cold brew concentrate and 1:2 (coffee to espresso out) for espresso, all by weight. For a drip coffee maker it gives 1 to 2 tablespoons of ground coffee per 6 oz of water. Start in the middle of the range and adjust one step at a time.

How much coffee per cup of water?

By the NCA's Golden Ratio for drip coffee, 1 to 2 tablespoons of ground coffee for every 6 oz of water. An 8 oz measuring cup therefore takes a little over 1 to a little under 3 tablespoons, and a 12 oz mug takes 2 to 4. By weight at a pour-over ratio of 1:16 to 1:13, a 240 g cup of water takes 15 to 18.5 grams of coffee.

What is the coffee to water ratio for a French press?

The NCA gives 1 gram of coffee to 10 to 16 grams of water. For 500 grams of water that is 31.3 grams of coffee at the lighter end (1:16) up to 50 grams at the strongest (1:10). Use a coarse grind and roughly four minutes of contact.

What is the coffee to water ratio for pour-over?

The NCA gives 1 gram of coffee to 13 to 16 grams of water. For 15 grams of coffee that means 195 grams of water at 1:13 or 240 grams at 1:16. Contact time should be two to four minutes in total.

What ratio should I use for cold brew?

The NCA gives 1 gram of coffee to 4 to 5 grams of water, steeped for about 12 hours. That is a concentrate with four times as much coffee per gram of water as a 1:16 hot cup, so it is meant to be diluted before drinking. For 1 liter of water, use 200 to 250 grams of coarse-ground coffee.

How many grams of coffee are in a tablespoon?

There is no single honest number. A tablespoon of ground coffee weighs a different amount depending on the grind, the roast and how heaped the spoon is. The reliable way to find out is to weigh one level tablespoon of the coffee you actually use, once, on a scale that reads to 0.1 gram.

Sources

  • National Coffee Association — Drip Coffee — NCA consumer guidance on drip/filter brewing: medium grind ("like kosher salt"), the "Golden Ratio" of 1–2 tablespoons of ground coffee per 6 oz of water, about 5 minutes of contact, paper vs metal vs cloth filters, and a recommendation to descale "at least every 3-6 months" to remove mineral buildup from tap water (accessed August 18, 2026)
  • National Coffee Association — Pour-Over Coffee — NCA consumer guidance on pour-over: medium grind ("like kosher salt"), a 1:13 to 1:16 ratio, water at 93 ± 3°C, a bloom of double the coffee weight for 30–45 seconds until the grounds stop bubbling, then a slow continuous spiral pour, for 2–4 minutes of total contact (accessed August 18, 2026)
  • National Coffee Association — French Press Coffee — NCA on the French press method: coarse grind ("like rock salt"), a 1:10 to 1:16 coffee-to-water ratio, water at 93 ± 3°C, roughly 4 minutes of contact (about a minute, then a stir, then about three more), plunging gently and serving immediately, and cleaning the whole press including the disassembled filter after every use (accessed August 18, 2026)
  • National Coffee Association — Cold Brew Coffee — NCA on cold brew: coarse grind ("like rock salt"), a 1:4 to 1:5 coffee-to-water ratio, room-temperature or cooler water, approximately 12 hours of contact (with a range from minutes to 12–18+ hours), straining through a paper, cloth or fine mesh filter, and the distinction from iced coffee — which is "brewed hot using a standard method, then cooled down" (accessed August 18, 2026)
  • National Coffee Association — Espresso — NCA on espresso: high pressure forcing nearly boiling water through a fine grind ("like table salt"), a 1:2 ratio of dry coffee to brewed espresso, 20–30 seconds of contact, crema as "the velvety, golden-brown top layer", and a machine, scale and grinder as the equipment (accessed August 18, 2026)
  • National Coffee Association — Storage and Shelf Life — NCA on coffee's "greatest enemies" — air, moisture, heat and light — plus shelf-life figures: roasted beans 1–3 weeks at room temperature, ground coffee 1–2 weeks, frozen beans 3–4 months (accessed August 11, 2026)
  • Bialetti — Ground coffee for Moka should never be pressed! — Bialetti: "Unlike the ground coffee used with professional coffee machines, ground coffee for Moka must have a medium grain, coarser than the blend for espresso, otherwise the water would have trouble passing through the powder"; "ground coffee for Moka must have a medium to coarse grain"; if the cup shows "an abundant residue of powder" on the bottom, the grind was too fine; "It is important not to go beyond the level of the safety valve"; fill the funnel to the edge and "do not press it down" (accessed September 18, 2026)
  • NIST — Metric Kitchen: Cooking Measurement Equivalencies — NIST's approximate equivalents that "may be used for home cooking applications": 15 mL = "1 tablespoon (1/2 fluid ounce)", 30 mL = "1 fluid ounce", 180 mL = "6 fluid ounces (3/4 cups)", 240 mL = "1 cup", 720 mL = "24 fluid ounces (3 cups)", 28 g = "1 ounce (by weight)", 454 g = "1 pound (16 ounces)" (accessed September 18, 2026)
  • U.S. Geological Survey — Water Density — USGS: "The density of water is roughly 1 gram per milliliter", varying slightly with temperature; the exact figure is "0.9998395 g/ml" at 4.0°C (accessed September 18, 2026)

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