Coffee Brewing & Making
Coffee-to-Water Ratio Explained: Grams, Litres and Easy Home Brewing English
A ratio is simply a repeatable way to say how much coffee and water you used. Once the maths is translated into kitchen language, it becomes much less intimidating.
Coffee methodAustralian cultureDaily EnglishReal-life practice
Quick answer
What you need to know first
A 1:16 brew ratio means one part coffee to sixteen parts water by mass—for example 20 g coffee to 320 g water. Another common way to describe a similar range is grams of coffee per litre of water. Different methods and preferences use different ratios; there is no single number for every brew.
Ratio translator1 : 1520 g coffee300 g water 1 : 1620 g coffee320 g water 1 : 1720 g coffee340 g water
Turn the colon into a kitchen example
With water, one millilitre is close to one gram for normal brewing calculations, which is why coffee people often place a brewer on scales and measure the water pour in grams.
Another way to say it
“Sixty grams per litre” is ratio language too
Australian plunger guides commonly give a starting amount per litre. Sixty grams per litre is approximately a 1:16.7 ratio. Seventy grams per litre is closer to 1:14.3. You do not need to calculate that in a café. The key is recognising that grams per litre and 1:x ratios describe the same relationship in different formats.
Useful question
“What ratio do you recommend for this coffee?” sounds natural when talking with a roaster or coffee enthusiast. For a less technical conversation, “How much coffee do I use for 500 mils of water?” is perfectly clear.
Strength versus extraction
More coffee changes concentration—but brewing is still interactive
If you increase the coffee dose but keep water the same, the beverage may become more concentrated. But grind, contact time and flow still affect extraction. This is why ratio is only one control.
For beginners, ratio is valuable because it stops random scooping. Once you can repeat a recipe, you can decide whether the next change should be dose, grind, time or something else.
Real conversation
Asking without doing maths in your head
You: I’ve got a 500-mil plunger. How much coffee do I use?
Staff: Start around thirty grams and adjust from there.
You: So that’s about sixty grams per litre?
Staff: Yep, roughly.
You: Great. If it tastes weak, should I add more coffee or change the grind first?
Math mini-practice15 g coffee × 16240 g water 20 g coffee × 16320 g water 30 g coffee × 16480 g water
Use one ratio three ways
Do not memorise dozens of tables. Learn what the ratio means and use a calculator when you need one. The English skill is understanding the instruction and being able to ask for clarification.
Scale language
Tare, zero, dose and yield
Once you use digital scales, a few new words appear. Tare or zero the scales means resetting the display to zero after placing a container on top. Dose usually means the amount of dry ground coffee you start with. Water weight is how much water you add in filter brewing. In espresso, yield often means the mass of liquid espresso produced in the cup.
A simple home sequence sounds like this: “Put the V60 on the scales, tare it, add twenty grams of coffee, tare again, then pour three hundred and twenty grams of water.” You can understand the process even if you never use the technical word brew ratio.
These verbs are valuable because they appear in recipes, videos and café training. Learn them as actions, not definitions. Press the tare button while saying “zero the scales,” and the vocabulary becomes attached to a physical memory.
Chatsifieds Phrase Wall
Take three brewing phrases into real conversation.
Open a phrase, understand the meaning, say it aloud and use it when you buy coffee, ask for a grind or talk about brewing at home.
Phrase Wall“What ratio do you recommend?”Ask how much coffee and water someone suggests using.Practise this phrase →Phrase Wall“How much coffee do I use?”Ask for a practical coffee dose for a brewing method.Practise this phrase →Phrase Wall“Which brew method is easiest to start with?”Ask for a beginner-friendly brewing recommendation.Practise this phrase →
Quick Check
Coffee-to-Water Ratio Quiz
Check the coffee idea and the English together. You can retake the quiz.
0 of 5 answered
Q1 · Brew + English
What does 1:16 mean?
Q2 · Brew + English
20 g coffee at 1:16 uses about…
Q3 · Brew + English
What does “60 g per litre” describe?
Q4 · Brew + English
Is one ratio correct for every method and person?
Q5 · Brew + English
A simple non-technical question is…
Real-world Coffee English mission
Choose one simple ratio and calculate your normal brew size. Say the recipe aloud: “I’m using twenty grams of coffee and three hundred and twenty grams of water.” Then save it so you can repeat the brew instead of guessing next time.
Source check: Specialty Coffee Association — Brew ratio, strength and extraction background · Harris Coffee Australia — Plunger ratio example · Code Black Coffee — Plunger ratio example. Brewing recipes vary by brewer, coffee, grinder and taste. Treat numbers as useful starting points, not universal laws.
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