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Espresso Ratio Calculator

Espresso brew ratio, yield and extraction guidance from dose and shot weight.

Enter values

Results update as you type.

Result

Target yield

36 g

A classic double is 18 g in, 36 g out, in 25–30 seconds. Adjust the grind, not the time, to hit it.

Brew ratio
1 : 2
Shot time
28 s
Flow rate
1.286 g/s
Flow assessment
Fast — grind finer
Shots per 250 g bag
13.9
For a double in a 250 ml latte
18 g dose, 36 g shot

About the Espresso Ratio Calculator

Espresso brew ratio, yield and extraction guidance from dose and shot weight.

Also known as: espresso brew ratio, ristretto lungo calculator, shot yield calculator, espresso dose.

How to use this calculator

  1. Enter dose (dry coffee), style, shot time.
  2. The result updates instantly as you type — press Calculate (or Enter) at any time.
  3. Review the breakdown shown under the main result.
  4. Use Copy result or Share to save the answer or send a link with your inputs.

Formula

yield = dose × brew ratio

Worked example

Using the values pre-filled in the calculator above:

  • Dose (dry coffee) = 18 g
  • Style: Espresso (1:2)
  • Shot time = 28 seconds

the calculator returns:

  • Target yield: 36 g
  • Brew ratio: 1 : 2
  • Shot time: 28 s
  • Flow rate: 1.286 g/s