Espresso Brew Ratio Calculator

Work out espresso brew ratio instantly with clear inputs, formula shown and shareable results.

About Espresso Brew Ratio Calculator

Brew ratio is liquid out divided by dry dose, and flow rate is that liquid divided by the shot time; a normale sits near 1:2 in 25 to 30 seconds. Ratio and time together describe a shot far better than either alone, because the same 1:2 ratio pulled in 15 or 40 seconds tastes completely different.

Formulas

Brew ratio

ratio = liquid espresso out / dry dose in

Flow rate

flow = grams out / seconds

Worked example

With the default values below, Espresso Brew Ratio Calculator returns Brew ratio of 2.000. Change any input above and every figure here is recalculated in your browser.

Inputs used

Dry dose in the basketminimum 5 g: 18 g
Liquid espresso outminimum 5 g: 36 g
Shot timeminimum 5 s: 28 s

Results

Brew ratio: 2.000
Written as a ratio: 1 : 2
Flow rate: 1.286 g/s
Shot style: Normale

Step by step

1Values used
2Brew ratio
3Flow rate
4Brew ratio= 2.000
5Written as a ratio= 1 : 2
6Flow rate= 1.286 g/s
7Shot style= Normale

Assumptions and limits

The result is derived only from the 3 inputs listed above. Anything not among them is not part of the calculation.
In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
Figures are rounded for display to 3 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Frequently Asked Questions

How is the Espresso Brew Ratio figure worked out?

ratio = liquid espresso out / dry dose in. Brew ratio is liquid out divided by dry dose, and flow rate is that liquid divided by the shot time; a normale sits near 1:2 in 25 to 30 seconds.

Why does this matter?

Ratio and time together describe a shot far better than either alone, because the same 1:2 ratio pulled in 15 or 40 seconds tastes completely different.

What do I need to enter?

Enter dry dose in the basket, liquid espresso out, shot time. The defaults shown are a realistic worked example — swap in your own figures to get a result you can use.