How Much Coffee-To-Water For Pour Over? | Brew Better Cups

For pour-over, start with 1:15 to 1:16: use 16–20 g coffee for 250–300 g water, then adjust by taste.

A solid pour-over starts with a measured ratio, not a scoop guessed before the kettle boils. The easiest starting point is 1 gram of coffee per 15 to 16 grams of water. Since 1 gram of water is close enough to 1 milliliter for brewing, the math stays easy: 20 grams of coffee pairs with 300 to 320 grams of water.

That range gives most brewers a sweet, clear cup with enough body. Use the stronger end, 1:15, for milk drinks, darker roasts, or anyone who likes more weight in the cup. Use 1:16 for a cleaner mug that still tastes full. Once the dose is steady, grind size, pouring, and brew time become much easier to fix.

Coffee To Water For Pour Over With Real Cup Sizes

Pour-over ratio is just a shorthand for strength. A 1:16 recipe means one part dry coffee to sixteen parts total brew water. So 18 grams of coffee needs 288 grams of water. A kitchen scale makes this painless, and it removes the biggest source of cup-to-cup swings.

Scoops can work in a pinch, but they’re rough. Different beans have different density, and a level scoop of one roast may weigh less than a scoop of another. If you want repeatable cups, weigh the beans and water. It’s a small habit that pays off daily.

A Starting Range That Makes Sense

For most pour-over cones and flat-bottom drippers, 1:15 to 1:16 gives enough dissolved coffee for flavor without making the cup heavy. A 1:13 cup can feel rich and syrupy, but it may hide delicate notes. A 1:16 cup often feels cleaner. Start at 1:16, then move in small steps.

Change only one thing per brew, or you won’t know what helped. If your cup tastes balanced but thin, use a touch more coffee. If it tastes balanced but too heavy, use a touch more water. If it tastes sour or bitter, fix grind and pour before blaming the ratio.

• For a small mug: 15 g coffee with 240 g water.
• For a full mug: 20 g coffee with 320 g water.
• For two cups: 30 g coffee with 480 g water.

What Official Brewing Numbers Say

Published brewing numbers don’t replace taste; they give you a safe range. Your dripper shape, coffee age, filter, and pour speed still change the cup. Treat the numbers below as a starting mark, then let your tongue decide the final ratio.

About Coffee, the National Coffee Association’s consumer site, lists a pour-over range of 1:13 to 1:16 coffee-to-water, with a 2–4 minute contact time and water near 93 ± 3°C. That range gives you room to brew a richer cup without turning the recipe into guesswork.

The Specialty Coffee Association’s home brewer test standard uses 55 g of coffee per 1 kg of water as a reference ratio in brewer testing, which lands near 1:18. The same SCA home brewer standard also names brew strength, extraction, grind, water, and temperature as measured parts of brewing.

Manual pour-over often tastes better a little stronger than that reference point because you control the pour by hand. A cone dripper with a thin bed may need more coffee than a batch brewer. A flat-bottom dripper may taste full at the same ratio because the water spreads across the bed more evenly.

How To Choose A Starting Recipe

Pick the recipe that matches your drinking size, then let the coffee tell you what to change. For a single cup, 18–20 grams of coffee and 300–320 grams of water is a friendly start. For a smaller afternoon cup, 15 grams of coffee and 240 grams of water keeps waste down.

Roast level matters. Light roasts often taste better with 1:16 or 1:17 and a finer grind, because they can be harder to extract. Medium roasts are happy near 1:15.5 or 1:16. Dark roasts may taste smoother at 1:16 or 1:17 because they dissolve more easily and can turn harsh when pushed.

Bloom Water And Total Water

Count bloom water as part of the total water. If your recipe is 20 grams of coffee and 320 grams of water, a 40-gram bloom leaves 280 grams for the later pours. The bloom is not extra water; it is the first part of the recipe.

A simple bloom is twice the coffee dose. For 18 grams of coffee, pour 36 grams of water, wait 30–45 seconds, then keep pouring. This wets the bed and lets trapped gas escape, so the later water can move through the coffee more evenly.

Pour Over Ratio Chart For Common Water Amounts

Use this table when you know how much coffee you want to brew. The middle column gives a balanced 1:16 dose. The last column gives stronger and lighter shifts without forcing you to redo the math.

Water Amount	Balanced Dose At 1:16	Stronger Or Lighter Range
200 g	12.5 g coffee	13.3 g at 1:15 / 11.1 g at 1:18
240 g	15 g coffee	16 g at 1:15 / 13.3 g at 1:18
250 g	15.6 g coffee	16.7 g at 1:15 / 13.9 g at 1:18
300 g	18.8 g coffee	20 g at 1:15 / 16.7 g at 1:18
320 g	20 g coffee	21.3 g at 1:15 / 17.8 g at 1:18
400 g	25 g coffee	26.7 g at 1:15 / 22.2 g at 1:18
500 g	31.3 g coffee	33.3 g at 1:15 / 27.8 g at 1:18
600 g	37.5 g coffee	40 g at 1:15 / 33.3 g at 1:18

How Taste Tells You What To Change

Ratio changes strength, but grind changes extraction. Don’t make the cup stronger just because it tastes sour. Sourness often means the water moved through too quickly, or the grind was too coarse. A finer grind usually helps more than adding coffee.

Bitterness can come from a grind that’s too fine, pouring that stalls, or water that sits in the bed too long. In that case, go a little coarser before changing the ratio. If the flavor is balanced but the cup feels thin, use a stronger ratio. If the flavor is balanced but heavy, use more water.

What You Taste	Likely Cause	Next Brew Move
Thin but clean	Ratio too light	Move from 1:16 to 1:15
Heavy but balanced	Ratio too strong	Move from 1:15 to 1:16 or 1:17
Sour and sharp	Under-extracted	Grind finer or pour slower
Bitter and dry	Over-extracted	Grind coarser or shorten brew time
Good start, muddy finish	Too much agitation	Pour gentler and avoid stirring late

Keep Notes For Three Brews

You don’t need a lab notebook. Write down coffee dose, water weight, grind setting, total brew time, and one plain taste note. If each cup drains in under two minutes, grind finer. If each cup crawls past four minutes and tastes dry, grind coarser.

A Simple Pour Over Recipe To Repeat

Use this recipe when you want a reliable starting cup:

1. Weigh 20 g coffee and grind medium to medium-fine.
2. Rinse the filter and warm the dripper.
3. Add coffee, level the bed, and start the timer.
4. Pour 40 g water for the bloom, then wait 30–45 seconds.
5. Pour to 200 g, then finish at 320 g total water.
6. Aim for a total brew time near 2:45–3:45.

If the cup tastes thin, try 21 grams of coffee next time with the same 320 grams of water. If it tastes heavy, keep 20 grams of coffee and move to 340 grams of water. Small steps beat big swings.

The Takeaway For Better Pour Over

Start at 1:15 to 1:16, weigh the beans and water, and change one variable at a time. A 20-gram coffee dose with 320 grams of water is the recipe I’d hand to most home brewers on day one. It’s strong enough to taste satisfying, clean enough to show the coffee, and easy to adjust after one sip.