Coffee to Water Ratio Calculator
Right amount of coffee grounds for your brew.
Enter your values
Enter the water amount in g/ml.
Choose one of: Mild (1:18), Medium (1:16), Strong (1:14).
Results update instantly as you type — no submit needed. Your values are remembered on this device, and the shareable link reopens the calculator with exactly these numbers.
- Coffee needed
- 31.3 g
- Ratio used
- 1:16
- Water used
- 500 g/ml
- Approx cups (240ml each)
- 2.1
Quick answer
A standard ratio is about 1:16 coffee to water by weight, adjusted stronger or weaker to taste.
coffee grams = water grams / ratio
At a glance
| What it does | Right amount of coffee grounds for your brew. |
|---|---|
| Category | Everyday |
| Inputs needed | Water amount, Strength |
| Main output | Coffee needed |
| Formula | coffee grams = water grams / ratio |
| Cost | Free — no sign-up, no download |
How to use the Coffee to Water Ratio Calculator
- 1Enter the total water amount for your brew.
- 2Choose mild, medium or strong strength.
- 3The coffee amount uses the standard ratio for that strength.
Inputs explained
- Water amount(g/ml)
- Enter the water amount in g/ml.
- Strength
- Choose one of: Mild (1:18), Medium (1:16), Strong (1:14).
Worked example
Using the values the calculator loads with:
Inputs
- Water amount500 g/ml
- StrengthMedium (1:16)
Results
- Coffee needed31.3 g
- Ratio used1:16
- Water used500 g/ml
- Approx cups (240ml each)2.1
Frequently asked questions
Does this work for espresso?
No — espresso uses a much tighter ratio around 1:2; this is for drip, pour-over or French press brewing.
Can I use my own ratio?
Yes, divide your water amount by any custom ratio to get the coffee weight.
What do I need to enter into the Coffee to Water Ratio Calculator?
Just 2 values: water amount, strength. Every field starts with a realistic example, so you can change one number at a time and watch the result update instantly.
How does the Coffee to Water Ratio Calculator work out the answer?
A standard ratio is about 1:16 coffee to water by weight, adjusted stronger or weaker to taste. It applies the formula coffee grams = water grams / ratio and shows the working so you can check each step by hand.
Is the Coffee to Water Ratio Calculator free, and do I need an account?
It is completely free with no sign-up, no download and no usage limit. Everything is calculated in your browser, so the numbers you type never leave your device.
Results are estimates for general information. For medical, legal, structural or financial decisions, confirm with a qualified professional.