How Much Coffee Do You Need for Drip Coffee? A Simple Dosing Guide
For drip coffee, the coffee-to-water ratio is more useful than a fixed amount of coffee per cup. A practical starting point is around 55–60 g of coffee per litre of water, with the dose adjusted according to your preferred strength and recipe.
You can easily scale the ratio down for a single cup. With 300 ml of water, around 16.5–18 g of coffee corresponds to 55–60 g per litre.
How much coffee do you need for drip coffee?
A useful starting point is around 55–60 g of coffee per litre of water. That equals roughly 5.5–6 g of coffee per 100 ml of water.
The SCA uses 55 g of coffee per 1,000 g of water as a reference in its home-brewer standards. Its two-cup pour-over recipe also uses 22 g of coffee with 400 g of water, which gives the same 55 g-per-litre relationship. :contentReference[oaicite:5]{index=5}
What does coffee-to-water ratio mean?
Coffee-to-water ratio describes how much water is used for a given amount of ground coffee. A 1:16 ratio means 1 g of coffee for every 16 g of water.
Using a ratio makes it easy to scale a recipe up or down. Instead of relying on an inconsistent spoonful or cup size, you can calculate the exact coffee dose for the amount of water you want to brew.
How much coffee do you need for 250 ml of water?
At a 1:16 ratio, 250 ml of water requires about 15.6 g of coffee. At 1:18, the dose is about 13.9 g.
| Water | 1:15 | 1:16 | 1:17 | 1:18 |
|---|---|---|---|---|
| 200 ml | 13.3 g | 12.5 g | 11.8 g | 11.1 g |
| 250 ml | 16.7 g | 15.6 g | 14.7 g | 13.9 g |
| 300 ml | 20.0 g | 18.8 g | 17.6 g | 16.7 g |
| 400 ml | 26.7 g | 25.0 g | 23.5 g | 22.2 g |
| 500 ml | 33.3 g | 31.3 g | 29.4 g | 27.8 g |
| 1,000 ml | 66.7 g | 62.5 g | 58.8 g | 55.6 g |
What coffee-to-water ratio is suitable for drip coffee?
A range of about 1:15 to 1:18 is a useful practical range for adjusting drip coffee to different preferred strengths. The SCA uses 55 g of coffee per litre of water as a home-brewer reference, which is approximately 1:18. :contentReference[oaicite:6]{index=6}
The ratio alone does not guarantee ideal extraction. Grind size, temperature, brew time and water quality also affect the final cup.
What happens if you use more or less coffee?
Using more coffee with the same amount of water generally produces a more concentrated drink. Using less coffee with the same amount of water produces a weaker drink.
If the coffee already tastes balanced but is simply too strong or too light, changing the coffee dose or ratio can be a useful adjustment.
| Ratio | General character | Example with 300 ml water |
|---|---|---|
| 1:15 | stronger | 20 g coffee |
| 1:16 | medium-strong | 18.8 g coffee |
| 1:17 | lighter | 17.6 g coffee |
| 1:18 | lighter still | 16.7 g coffee |
How do you calculate the right amount of coffee?
Divide the amount of water by the ratio number. For example, 500 g of water divided by 16 gives 31.25 g of coffee at a 1:16 ratio.
The same calculation works for any volume of water, so you can scale a recipe for one cup or a larger batch.
Example: 300 ml of water
With 300 g of water at a 1:16 ratio, you need about 18.8 g of coffee. For practical brewing, you can round this to 19 g.
Example: 500 ml of water
With 500 g of water at 1:16, the calculation gives about 31.3 g of coffee.
Example: 1 litre of water
With 1,000 g of water at 1:16, you need 62.5 g of coffee. At 1:18, the dose is about 55.6 g.
Should you measure coffee by cups or by grams?
For repeatable brewing, measuring in grams is more reliable than measuring by cups or spoonfuls. Cups vary in size, and a spoonful can contain different amounts depending on grind size and how full the spoon is.
A scale makes it easier to repeat the same recipe and compare changes to grind size, temperature or brew time.
How much coffee do you need for one cup of drip coffee?
For a cup brewed with around 250–300 ml of water, about 15–19 g of coffee is a useful starting point, depending on the ratio.
| Water | Practical coffee dose |
|---|---|
| 150 ml | about 9–10 g |
| 200 ml | about 11–13 g |
| 250 ml | about 14–17 g |
| 300 ml | about 17–20 g |
| 400 ml | about 22–27 g |
| 500 ml | about 28–33 g |
These figures are starting points derived from different brewing ratios. They are not a universal recipe for every coffee.
What matters more: coffee dose or coffee-to-water ratio?
The ratio is more useful because it considers coffee and water together. An absolute coffee dose tells you little without knowing how much water is being used.
For example, 20 g of coffee can produce a relatively strong recipe with 300 ml of water, while the same 20 g will produce a much lighter recipe with 400 ml.
What should you do if drip coffee tastes too strong?
If the coffee tastes balanced but too concentrated, use slightly less coffee or more water. Make small changes rather than changing the recipe dramatically.
If the coffee tastes bitter or dry, however, the coffee dose may not be the cause. Check grind size, temperature and brew time as well.
What should you do if drip coffee tastes too weak?
If the coffee tastes balanced but too light, use slightly more coffee or reduce the amount of water.
If the coffee also tastes sour or unbalanced, check the grind size and brewing process. A weak-tasting coffee is not always a dosing problem.
How does coffee dose interact with grind size?
Coffee dose and grind size have different functions. The dose mainly changes the coffee-to-water relationship, while grind size changes the conditions for flow and extraction.
For this reason, avoid making a large change to both variables at the same time. When adjusting the dose, keep the other brewing parameters consistent first.
For more detail, see our guide to the right grind size for drip coffee.
How does coffee dose interact with water temperature?
Coffee dose determines the coffee-to-water relationship, while temperature affects the rate of extraction. Both can change the final cup, but they do so in different ways.
When refining a recipe, establish a consistent coffee-to-water ratio first, then adjust temperature and grind size according to taste and brew behaviour.
For more information, see our guide to the right water temperature for drip coffee.
How much coffee does the SCA use in a pour-over recipe?
The SCA two-cup pour-over recipe uses 22 g of coffee with 400 g of water. That corresponds to a 1:18.2 ratio, or approximately 55 g of coffee per litre. :contentReference[oaicite:7]{index=7}
The same recipe uses a medium-fine grind, 93.5 °C water and a total brewing time of around 2:30–3:00 minutes. :contentReference[oaicite:8]{index=8}
Does using more coffee automatically make better coffee?
No. More coffee makes the drink more concentrated when the amount of water stays the same, but it does not automatically produce better extraction or flavour.
The goal is to find a ratio that works with the coffee, grind size, temperature and brewing time to produce the flavour you want.
What is the most important rule for dosing drip coffee?
Weigh both coffee and water and think in ratios rather than “spoons per cup”. Around 55–60 g of coffee per litre is a useful starting point that you can adjust according to taste.
For the complete brewing process, see our complete drip coffee preparation guide, guide to preparing drip coffee correctly and step-by-step drip coffee guide.