Espresso Ratio Calculator Turn your dose into a target yield
Enter the dry coffee in your basket, choose a brew ratio and calculate the beverage weight to aim for. You can also compare the shot you actually pulled with the target recipe.
Three steps from dose to target
Set a target, then compare the shot you pulled
Begin with the dose your basket and machine handle consistently. Change the ratio to explore a shorter or longer beverage without changing the dry coffee amount.
Use weight to make the recipe repeatable
Place a scale beneath the cup, begin the shot and stop the pump as the display approaches the target. Allow for the small amount that may continue dripping afterwards.
How your shot compared
What the number cannot tell you
Two shots can reach the same dose and yield but taste different because of grind distribution, coffee age, water, temperature and flow. Use the calculated ratio to repeat the recipe, then adjust it alongside grind size and taste.
One dose can produce several useful espresso styles
Brew ratio compares the dry coffee in the basket with the liquid espresso in the cup. The names below are practical shorthand rather than fixed international boundaries.
Shorter and concentrated
Less beverage weight from the same dose. This usually gives greater concentration and a heavier impression in the cup.
Common starting point
A widely used home espresso recipe because it provides a clear baseline for adjusting grind and taste.
Longer and more open
Additional beverage weight can produce a lighter body and may suit coffees that taste tight at a shorter ratio.
Higher-yield espresso
A substantially longer output. This is not the same as adding water to a completed espresso to make an Americano.
Ratio does not set the clock
A shot-time range can be a useful starting reference, but the best result is not determined by time alone. The same ratio may need a different grind and flow time when the coffee, dose, basket or machine changes.
A repeatable three-stage workflow
Keep the recipe simple while diagnosing it. Changing dose, yield and grind together makes it difficult to identify what improved or damaged the shot.
Keep the dose stable
Use an amount that suits the basket and can be prepared consistently. Reweigh it after grinding when retention makes the delivered dose uncertain.
Stop at the target yield
Use a scale rather than cup volume. Crema changes apparent volume, while beverage weight gives a more repeatable stopping point.
Adjust the grind and taste
Use flow, shot time and flavour together. Grind changes should help the machine reach the chosen ratio with a more balanced result.
Treating 25–30 seconds as a pass or fail test
That range can be a useful reference for some recipes, but a shot slightly outside it is not automatically wrong when the flow and taste are good.
Measuring the finished shot by volume
Crema can make two equal-weight shots appear to have different volumes. Weigh the liquid in the cup instead.
Changing dose and output at the same time
Hold one variable steady while learning what the other changes. The calculator is most useful when the dose remains repeatable.
Assuming a longer ratio means a lungo button
A ratio describes the measured coffee and beverage weights. Machine programmes may use different doses, water quantities and stopping methods.
Using an espresso brew ratio
The ratio makes a recipe measurable and repeatable. It does not replace tasting the coffee or checking that the dose is suitable for the basket.
What does a 1:2 espresso ratio mean?
It means producing two grams of liquid espresso for every gram of dry coffee. An 18g dose therefore has a 36g target beverage at 1:2.
Should I include the weight of the cup?
No. Place the empty cup on the scale and tare it to zero before brewing so the display shows only the beverage weight.
Is 1:2 always the best espresso ratio?
No. It is a useful and widely used starting point. Different coffees and preferences may suit a shorter or longer ratio.
Does the ratio include water retained in the coffee puck?
No. Espresso brew ratio normally compares the dry coffee dose with the beverage collected in the cup, not all the water delivered by the machine.
What ratio should I use for a ristretto?
A short ratio around 1:1 to 1:1.5 is a practical starting range, although cafés and machines use the name differently.
What ratio should I use for a lungo?
A longer ratio around 1:3 or beyond may be used as a starting point. A lungo extends the extraction through the coffee rather than adding water afterwards.
Why does shot time not appear as a calculated target?
Dose and ratio determine the target beverage weight, but they do not determine one ideal time. Grind, coffee, basket, pressure, temperature and puck preparation all affect flow.
Should I change the dose when a shot runs too fast?
Usually begin by keeping the basket-appropriate dose and target yield stable, then adjust the grind. Changing several variables at once makes the result harder to interpret.
Method note: target beverage weight equals dry dose multiplied by the selected ratio number. The optional comparison divides actual beverage weight by dry dose to calculate the achieved ratio. Displayed figures are rounded to one decimal place where needed.