What Is the Golden Ratio for Pour-Over Coffee?
Sep 14, 2026
Quick answer: There is no single perfect “golden ratio” for pour-over coffee. A useful starting range is about 1:16 to 1:17 — one part coffee to 16–17 parts water by weight.
A simple starting point is 60 g of coffee per litre of water, which is about 1:16.7. From there, adjust by taste.
A simple pour-over ratio table
| Water | 1:16 | 1:16.7 | 1:17 |
|---|---|---|---|
| 250 g | 15.6 g coffee | 15 g | 14.7 g |
| 300 g | 18.8 g | 18 g | 17.6 g |
| 500 g | 31.3 g | 30 g | 29.4 g |
| 1,000 g | 62.5 g | 60 g | 58.8 g |
You do not need to hit these numbers perfectly. A kitchen scale that reads to 0.1 or 1 g is more than enough for everyday brewing.
What does 1:16 mean?
A 1:16 brew uses 16 g of water for every 1 g of coffee. So 20 g of coffee would use 320 g of water.
Count all brew water in the ratio, including bloom water. If you add water after brewing — often called bypass — keep that separate in your notes because it changes the final drink strength without passing through the coffee bed.
How should you adjust the ratio?
The coffee tastes balanced but too strong
Use a little more water or a little less coffee. For example, move from 1:15 to 1:16 or 1:17.
The coffee tastes balanced but too weak
Use a little less water or a little more coffee. Do not immediately grind finer if the flavour is already balanced.
The coffee tastes sour or underdeveloped
Ratio may not be the main problem. A finer grind or better extraction may help more. See our sour pour-over guide.
The coffee tastes bitter, rough or drying
Do not assume the ratio alone is responsible. Grind, flow, roast and agitation may matter more. See our bitter pour-over guide.
Ratio, strength and extraction are different things
Brew ratio is the recipe: coffee compared with water.
Strength is how concentrated the finished drink tastes and measures.
Extraction is how much soluble material left the coffee grounds and entered the drink.
These ideas are related, but they are not the same. More coffee usually makes the drink stronger, but it does not automatically mean more extraction. More water can make the drink less concentrated while also extracting more from the grounds.
This is why changing ratio and grind at the same time makes troubleshooting harder.
Does ratio affect brew time?
Yes, especially when you change the amount of coffee. A larger dose makes a deeper bed and often increases resistance. The brew may take longer.
Use our brew-time guide for the timing side, and the slow or fast guides if the flow changes sharply.
Should light and dark roasts use different ratios?
Not automatically. Roast can change how a coffee extracts and tastes, but there is no universal “light roast ratio” or “dark roast ratio.” Start with the same sensible range, then adjust by taste.
A practical way to find your own ratio
- Start around 1:16.5 to 1:17.
- Keep grind, brewer, paper and pouring steady.
- Taste the cup.
- If it is balanced but too strong, add a little more water next time.
- If it is balanced but too weak, use slightly more coffee or less water.
- If it is sour, bitter or uneven, diagnose extraction before making a large ratio change.
Frequently asked questions
How much coffee for 250 g of water?
About 15 g is a good starting point at roughly 1:16.7.
How much coffee for 300 g of water?
About 18 g is a good starting point at roughly 1:16.7.
Is 60 g/L the same as 1:16?
Not exactly. 60 g per litre is about 1:16.7.
Should I weigh water or use millilitres?
For brewing, weighing water is simple and repeatable. For practical kitchen use, 1 g of water is close enough to 1 ml.
What if I prefer coffee outside this range?
Drink it that way. The ratio is a starting tool, not a rule.
Keep the useful rule
Choose ratio for the strength you enjoy, then use grind and technique to improve extraction.
Continue with our grind-size guide, weak-coffee guide, Japanese pour-over tools guide, filter and dripper guide, or browse coffee tools.
