Portafilter Size Chart [And BONUS Tamper Sizing Guide!]

The portafilter is one of the most crucial parts of an espresso machine. It’s the place where hot water and coffee get mixed and pressurized into a delicious espresso shot.

Portafilters are made of a variety of types that will help you control your espresso shot size.

Not only that, but they also come in different sizes, some of which are more ideal for your machine than the other.

For that reason, it’s extremely critical for you to know more about portafilters and how to find the right size for you.

In today’s article, we’ll walk you through a quick sizing guide to help you know which one to go for.

Additionally, you’ll find a portafilter size chart for a quick reference.

Portafilter Size Chart

So, without further ado, let’s dive in!

What Are the Common Portafilter Sizes?

As you now know, not all portafilters are created equal. One thing you should know is that the portafilter size is measured in millimeters (mm).

Portafilter sizes range from 49 mm all the way up to 58 mm.

Ideally, the 58 mm in diameter are the most common portafilter basket size on the market, while the other relatively rare, especially in commercial machines.

It’s regarded as a standard size for almost all high-end home espresso machines and commercial ones.

For the most part, a smaller portafilter size will usually mean a lower-priced espresso machine, although it’s not necessarily the case always.

This happens because a smaller sized portafilter usually means a lower level of flexibility when it comes to the amount of coffee grounds you can fit inside, limiting your espresso size choices.

Even if you opt for a deeper by smaller portafilter, you’ll be limited by the size of the machine itself.

Why It’s Important to Figure Out Your Portafilter Size

For the most part, portafilters don’t come with any information about their sizes. Determining the portafilter size is crucial to figure out the amount of coffee you’re dealing with, especially if you’re following a recipe.

Another reason why the portafilter size is critical for you is the espresso tamper. The tamper is the tool you use to press the ground coffee into the basket of the portafilter to keep them compact and ready for pressing.

Ideally, the tamper should be a little smaller than the basket, so it’s able to press the grounds without getting caught in the walls of the portafilter.

How to Determine You Portafilter Size

The easiest way to identify the size of your portafilter is by using a set of measuring calipers. However, unless you’re a seasoned barista or a production engineer, chances are that you don’t have one of these around.

So, here’s an alternative and easy way to measure portafilter size to pick the right tamper for it.

For this method, you’ll use a measuring tape (preferably the retractable steel one with 1/32 inches divisions) and your smartphone for calculations. Here’s how to do it:

  1. Measure the portafilter across the diameter (the centerline).
  2. Change your reading to a decimal unit. You can simply do this by typing your measurement. For example (type 2 1/3 to get 2.33)
  3. Convert the inches to millimeters by multiplying by 25.4 (2.33 x 25.4 = 59.18 mm)
  4. Get a tamper that’s 0.75 mm smaller by subtracting (59.18 - 0.75 = 58.43 mm)

Tamper sizes are usually standardized to a whole number. For that reason, you’ll need to round up your final number to the lower approximation.

In the example’s case, this means 58 mm, so you will have to get a 58 mm tamper for your portafilter, the most common size in that case.

A Reference Chart for Espresso Tamper Sizes

Whether you’re unable to find your portafilter size for your machine, unsure about your measurements, or in a hurry, this section has got you covered!

In the following chart, you’ll find a brief list of some of the ideal tamper sizes for the most common domestic and commercial espresso machines in the market:

Model Name

Ideal Tamper Size

Astra

56 mm

Azkoyen

58 mm

Ascaso

57 mm

Aurora

56 mm

Astoria

58 mm

Bodum Granos

51 mm

Bunn

58 mm

Breville 800 Series

51 mm

Bezzera

58 mm

Brasilia

58 mm

Breville Express and Infuser

53 mm

New Breville Models

58 mm

Conti

58 mm

Cuisinart

51 mm

Cimbali JuniorDT1

58 mm

Cimbali Casa

57 mm or 58 mm (varies per model)

Caramali

58 mm

Delonghi (old models)

49 mm

Delonghi (new models)

51 mm

ECM Botticelli

58 mm

Elektra (Home and Commercial Models)

58 mm

ECM Commercial Models

58 mm

ECM Cellini

58 mm

ECM Giotto

58 mm

Espressione Cafe Retro

58 mm

Estro

53 mm

Expobar

58 mm

Espressione Caffe Novecento

53 mm

Faema

53 mm

Fiorenzato

58 mm

Francis!Francis New Version

56 mm

Francis!Francis Old Version

57 mm

Futurmat

58 mm

Grimac

58 mm

Gaggia Classic

58 mm

Gaggia Semi-Auto

58 mm

Gaggia Factory Lever

51 mm

Isomac

58 mm

Innova

57 mm

Kitchenaid Proline

58 mm

La Pavoni Napolitana

57 mm

La Pavoni lever

51 mm

La Scala

58 mm

La Pavoni Lusso

53 mm

La Riviera

45 mm

La Spaziale commercial models

53 mm

La Spaziale home models

52 mm

La Valentina

58 mm

Mokita

55 mm

Mypressi Twist

53 mm

Nuova Simonelli (Appia, Grinta, and Oscar)

58 mm

Olympia Cremina

49 mm

Olympia Club

49 mm

Olympia Express

49 mm

Olympia Cremina

49 mm

Pasquini Livietta

58 mm

Quick Mill

58 mm

Rancilio Silvia

58 mm

Rancilio Espresso

58 mm

Reneka

56 mm

Saeco

53 mm

Solis

53 mm

Starbucks Barista

52 mm

Wrap Up

With that said, you now have a detailed portafilter size chart as well as a sizing guide to help you pick the ideal portafilter for a delicious shot of espresso!

While measuring your espresso portafilter to pick a tamper, remember that a basket with ridges that faces inwards will decrease the space available for a tamper.

This means that you’ll need to go for a smaller size.

However, if you’re unsure about the sizing of your portafilter, you can refer to the table provided above for an easier picking process.

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