Interactive espresso tool
Convert dose, yield, and ratio in a few seconds
Most beginners know one number and guess the other two. This calculator lets you start from the part of the recipe you already know — dose, yield, or target ratio — and fill in the missing piece with a cleaner baseline.
Start here
What the calculator is actually doing
Dose is the dry coffee you put in the basket. Yield is the liquid espresso you collect in the cup. Brew ratio is the relationship between them.
If you know dose and ratio
Multiply dose by ratio to get target yield. Example: 18 g dose at 1:2 = 36 g yield.
If you know dose and yield
Divide yield by dose to see the ratio you actually pulled. Example: 40 g yield from 18 g dose = 1:2.22.
If you know yield and ratio
Divide yield by ratio to estimate the dose needed. Example: 36 g yield at 1:2 = 18 g dose.
Calculator
Espresso brew ratio calculator
Fill in any two values and leave the third empty. The tool will calculate the missing number and explain what the result means in plain English.
Example starting point: 18 g in, 36 g out, 1:2 ratio.
How to use it
When to pull shorter or longer
The ratio is not the whole shot, but it gives you a quick way to test direction without changing everything at once.
Go shorter when the shot feels thin but still sharp
If your espresso tastes watery yet aggressive, test a slightly shorter yield like 1:1.75 before making huge dose changes.
Go longer when the shot is heavy, salty, or cramped
If the cup feels dense and underdeveloped, stretching from 1:2 to 1:2.25 or 1:2.5 can make it easier to taste sweetness and clarity.
Do not chase ratio alone
Bad puck prep, stale beans, or a weak grinder can ruin a shot at any ratio. Use the calculator as a baseline, then adjust grind, prep, and temperature with intention.
Examples
Example espresso recipes to copy, then tweak
These are not sacred recipes. They are useful starting points for common home-espresso goals.
Balanced daily shot
- Dose: 18 g
- Yield: 36 g
- Ratio: 1:2
- Use case: the easiest baseline for medium and medium-dark beans
Shorter milk-drink base
- Dose: 18 g
- Yield: 30 g
- Ratio: 1:1.67
- Use case: more concentrated espresso when the shot is heading into a latte or cappuccino
Longer clarity test
- Dose: 19 g
- Yield: 47.5 g
- Ratio: 1:2.5
- Use case: useful when a medium roast feels muddy or too compressed at 1:2
As an Amazon Associate, Espresso Foundry earns from qualifying purchases. Product prices and availability are subject to change. Full affiliate disclosure.