Espresso Ratio Calculator
Coffee dose and yield for a target espresso ratio.
Enter your values
Enter the coffee dose (dry) in g.
Choose one of: 1:1 (ristretto), 1:1.5 (short), 1:2 (classic double), 1:2.5 (lungo), 1:3.
Enter the target brew time in sec.
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.
- Target output yield
- 36 g
- Coffee dose
- 18 g
- Brew ratio
- 1:2
- Target brew time
- 27 sec
Quick answer
Espresso yield equals the coffee dose times the brew ratio (e.g. 18g dose at 1:2 ratio yields 36g of espresso).
yield = dose x ratio
At a glance
| What it does | Coffee dose and yield for a target espresso ratio. |
|---|---|
| Category | Everyday |
| Inputs needed | Coffee dose (dry), Brew ratio, Target brew time |
| Main output | Target output yield |
| Formula | yield = dose x ratio |
| Cost | Free — no sign-up, no download |
How to use the Espresso Ratio Calculator
- 1Enter your coffee dose (the dry ground coffee weight in the portafilter).
- 2Choose your target brew ratio — 1:2 is the standard modern espresso ratio.
- 3Pull the shot to the calculated output weight within your target brew time for a balanced espresso.
Inputs explained
- Coffee dose (dry)(g)
- Enter the coffee dose (dry) in g.
- Brew ratio
- Choose one of: 1:1 (ristretto), 1:1.5 (short), 1:2 (classic double), 1:2.5 (lungo), 1:3.
- Target brew time(sec)
- Enter the target brew time in sec.
Worked example
Using the values the calculator loads with:
Inputs
- Coffee dose (dry)18 g
- Brew ratio1:2 (classic double)
- Target brew time27 sec
Results
- Target output yield36 g
- Coffee dose18 g
- Brew ratio1:2
- Target brew time27 sec
Frequently asked questions
What's a typical brew time?
Most espresso shots target 25-30 seconds from the start of extraction to reaching the target yield.
Why does ratio matter?
A higher ratio (more water relative to coffee) produces a lighter, less intense shot; a lower ratio is stronger and more concentrated.
What do I need to enter into the Espresso Ratio Calculator?
Just 3 values: coffee dose (dry), brew ratio, target brew time. 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 Espresso Ratio Calculator work out the answer?
Espresso yield equals the coffee dose times the brew ratio (e.g. 18g dose at 1:2 ratio yields 36g of espresso). It applies the formula yield = dose x ratio and shows the working so you can check each step by hand.
Is the Espresso 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.