What size dosing funnel do you need?

The correct dosing ring is determined by your espresso machine's portafilter and your grinding method. Many De'Longhi machines, for example, fall into the 51 mm category, many 54 mm Sage and Solis machines use compatible accessories around 53.3 mm, and many larger commercial systems fall into the 58 or 58.5 mm category. If you have a built-in coffee grinder, also check whether the ring needs to fit under that grinder.

A dosing ring essentially has one main task: to ensure that the ground coffee stays in your filter basket during grinding and distribution. That sounds simple, but it can make a significant difference when you're trying to brew every espresso with the same amount of coffee.

During workshops, I often see someone meticulously weighing their coffee beans, but then losing a little coffee next to the portafilter during grinding. Subsequently, a WDT tool is used to work through the ground coffee, and some coffee again ends up over the edge. The difference each time may seem small, but if you brew one espresso with 17.6 grams and the next with 18.1 grams while changing nothing else, you still have a different starting point.

A dosing ring can make that part of your routine much simpler. First, however, it does need to fit properly.

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Why such a small tool can still make a difference

A dosing ring does not change the coffee beans, the grind, or the water. What it can do is prevent you from unknowingly losing some of your ground coffee between weighing and tamping. This makes it easier to start each espresso with the same amount of coffee.

What does a dosing funnel do to the consistency of your espresso?

Zilveren doseerring op portafilter tijdens WDT voor schonere puck prep en minder koffie over de rand

When is it actually useful?

Not every home barista needs a dosing funnel. First, observe what happens during your normal coffee preparation routine. If you lose little to no coffee and can distribute it easily, the benefit is smaller than if ground coffee is scattered around your grinder after every shot.

When is a dosing ring useful and when can you skip it?

A dosing funnel is especially useful when you grind directly into the portafilterand see coffee spilling over the edge during grinding. The extra height can also be pleasant with a rather full filter basket, as the freshly ground coffee first forms a small mound before you distribute it evenly.

If you use a WDT tool, the advantage becomes even clearer. WDT stands for Weiss Distribution Technique. This involves moving several thin needles through the ground coffee to break up clumps and distribute the coffee more evenly throughout the filter basket. Without an extra rim, it's easy to push some coffee out.

Are you already working cleanly, is your dose stable, and can you move through your ground coffee without issues? Then you don't automatically need to buy an extra accessory.

And if your real problem is that your espresso tastes sour, bitter, thin, or different every time, look beyond just the dosing funnel. In that case, the coffee beans, roast date, grind size, dose, amount of espresso in the cup, and extraction time are at least as important.

Portafilter met doseerring en gemalen koffie klaar voor gebruik met een WDT-tool vóór het tampen

First determine the size

Numbers on espresso machines and accessories can seem confusing. For example, a machine with a 54mm portafilter might use an accessory sold as 53.3mm. A 58mm machine, in turn, might use accessories around 58.5mm. Therefore, never choose based solely on a rounded number.

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Which size dosing funnel fits your portafilter?

You'll encounter this size frequently with more compact espresso machines. Many De'Longhi models, including the Dedica and La Specialista families, fall into this category. The Smeg ECF01 and the Solis Grind & Infuse Compact 1018 are also machines for which 51mm may be relevant.

For this route, you can check out the black 51mm dosing ring from Barista Essentials.

53.3 mm for many 54 mm systems

This is especially important for machines where the portafilter is described as 54mm. Many Sage Bambino, Bambino Plus, and Duo-Temp machines without a built-in grinder fall into this category. Various 54mm Solis machines, including the Barista Perfetta Plus, also work with accessories that are slightly smaller than the nominal 54mm of the portafilter.

For this, the black 53.3 mm dosing ringis the relevant Barista Essentials route.

58 mm

Barista Essentials positions its 58mm version primarily for Quick Mill machines. Because Quick Mill has released many different models over the years, always check your exact portafilter for an older or less common machine.

For that, check out the black 58 mm dosing ring.

58.5 mm

This version is associated by Barista Essentials with many larger 58mm systems from brands such as ECM, Rocket, Rancilio, Gaggia, Bezzera, Vibiemme, and several other brands in the prosumer segment.

It's important that "58 mm machine" doesn't automatically mean that every accessory is exactly 58.0 mm. The fit of a dosing ring may be specified differently than, for example, that of a tamper. Therefore, check the advice for the specific accessory.

For the machines mentioned by Barista Essentials, the black 58.5 mm dosing ringis the intended route.

54 mm machine with built-in coffee grinder

For example, do you have a Sage Barista Express, Barista Pro, or Barista Touch and do you grind directly into the portafilter with the built-in grinder? Then something else comes into play. The ring must not only fit the portafilter but also leave enough space to properly place the portafilter under the grinder.

For this, there is a separate dosing ring for 54 mm Sage, Solis, and Breville machines with a built-in grinder.

Do you have a Sage Oracle, Oracle Touch, Dual Boiler, or another model with a 58mm portafilter? Then don't automatically assume this 54mm version. Check that model separately.

Affiliate: Geert-Jan may receive a commission for purchases made through a Barista Essentials link. Shipping, returns, and right of withdrawal are handled by Barista Essentials.

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Naked filterdrager hout van 51mm voor de'longhi dedica espressomachine 5.

Search for your machine or brand

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Dosing ring per espresso machine and machine family

AscasoMany current 58 mm Ascaso machines fall into the 58.5 mm category for compatible Barista Essentials accessories. However, there are also divergent and older models, including 57 mm systems. Therefore, please check the exact model.

BellezzaMany models such as Valentina, Bellona, Inizio, Francesca, and Chiara belong to the larger 58 mm machine family for which Barista Essentials uses the 58.5 mm version.

BezzeraMany Bezzera machines use a commercial 58 mm portafilter. For the models supported by Barista Essentials, the 58.5 mm dosing ring is usually applicable. Please check older or divergent models individually.

Breville54 mm machines without a built-in grinder usually fall into the same size family as comparable Sage models. For 54 mm models with a built-in grinder, a separate machine version may be needed. Breville also has larger models, so please check the exact machine.

CREM / ExpobarMany models in this family use a commercial 58 mm portafilter and fall into the 58.5 mm category for compatible Barista Essentials accessories.

De’LonghiMany Dedica, ECP, and La Specialista models use a 51 mm portafilter. De’Longhi itself also offers 51 mm accessories for these systems. For a divergent or very old model, please still check the exact portafilter.

ECMThe well-known ECM machines with a commercial 58 mm group head belong to the large portafilter family. Barista Essentials pairs its 58.5 mm dosing ring with these. Please note that ECM itself labels some other accessories as 58 mm; therefore, choose based on the fit of the specific ring and not on a single size number.

FaemaMany commercial Faema systems belong to the 58 mm family, but exceptions exist, especially with older machines. For a classic or historical machine, individual checking is advisable.

Flair 58 / 58+These manual machines use a large 58 mm portafilter family. Check the specific ring before ordering.

GaggiaThe well-known Gaggia Classic family uses a 58 mm portafilter and falls into the 58.5 mm category in Barista Essentials' sizing.

GastrobackThis brand has various sizes, including 51, 54, and 58 mm. Therefore, never buy solely based on brand name. First, find your exact model.

GraefMultiple systems are also found here. Some larger machines use a 58 mm platform, while more compact models may have a smaller portafilter. The model number is therefore decisive.

La MarzoccoLa Marzocco often works with professional 58 mm systems, but do not use the brand name alone as definitive size advice. Among others, the Linea Micra deserves separate checking before ordering a ring.

La PavoniLa Pavoni has used many different diameters over the years, including smaller sizes that do not fall within the four standard rings above. Always check the exact model and year of manufacture for this brand.

LelitLelit uses multiple systems. Machines from the LELIT58 family belong to the larger 58 mm category. The Anita, for example, uses the smaller LELIT57 system and therefore does not automatically belong to the 58.5 mm dosing ring. Check the model before ordering.

ProfitecMany Profitec machines use a commercial 58 mm portafilter. As with ECM, different accessories may be designated by the manufacturer as 58 or approximately 58.5 mm. Therefore, look for the explicit compatibility of the ring.

Quick MillFor many well-known Quick Mill machines, the 58 mm dosing ring is the primary Barista Essentials option. Since the brand has many different and older models, checking at the model level remains advisable.

RancilioSilvia, Silvia Pro, and Silvia Pro X belong to the commercial 58 mm family. Barista Essentials pairs such systems with the 58.5 mm ring.

RocketMany Rocket espresso machines use a commercial 58 mm portafilter and fall into the 58.5 mm category with Barista Essentials.

SageBambino, Bambino Plus, and Duo-Temp Pro belong to the well-known 54 mm family where the 53.3 mm ring may be relevant. Barista Express, Barista Pro, and Barista Touch combine a 54 mm portafilter with a built-in grinder; the separate machine version is intended for these. Dual Boiler and Oracle models use a larger 58 mm system and must be checked separately.

SmegThe well-known ECF01 machines use a 51 mm portafilter.

SolisThe Grind & Infuse Compact 1018 is in the 51 mm category. The Barista Perfetta Plus 1170 uses a 54 mm portafilter and fits within the smaller accessory family around 53.3 mm. For Grind & Infuse models with a built-in grinder, it must also be checked whether the special machine version is needed.

Vibiemme / VBMMany well-known VBM machines use a commercial 58 mm portafilter and fall into the 58.5 mm category for compatible Barista Essentials accessories.

If your machine is not on this list, or if you have an older model whose size you are unsure of? Then preferably measure the inner diameter of the filter basket with a caliper and then check whether the chosen ring is explicitly recommended for your model or portafilter.

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Zwarte 53,3 mm doseerring bevestigd op een portafilter onder de ingebouwde grinder van een Sage Barista Express, met versgemalen koffie in het filter.

When it comes to a built-in grinder, more than just the diameter needs to fit.

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Do you have a Sage, Solis, or Breville with a built-in grinder?

With a separate coffee grinder, the process is quite simple. You place the dosing funnel on your portafilter, grind your coffee, distribute the ground coffee, and then remove the funnel before proceeding.

With a machine with a built-in coffee grinder, the portafilter often hangs in a holder directly under the grinding spout. As a result, a regular funnel might be too high, too wide, or otherwise awkward, even if the diameter appears correct on paper.

This is especially relevant for 54 mm machines from families such as Sage Barista Express, Barista Pro, and Barista Touch, and similar models from Solis and Breville.

Therefore, check two things:

  1. does the funnel fit well on your portafilter basket;
  2. can you place the portafilter with the funnel normally under the built-in grinder?

If you have a model from the same brand family with a 58 mm portafilter, such as certain Oracle models, you will need to check the exact size again. So, the presence of a built-in grinder does not independently tell you which funnel you need.

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Zwarte WDT-tool voor thuisbarista’s die hun espresso-routine en puckvoorbereiding willen verbeteren

A logical combination with WDT

The extra height of a dosing funnel is especially useful when using thin WDT needles to stir the ground coffee. You get more room to manoeuvre and it's less likely you'll push coffee over the edge.

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How do you use a dosing ring together with a WDT tool?

Start with a clean and dry filter basket. Place the dosing funnel securely on the portafilter, then grind your coffee. The funnel remains in place during distribution.

If you're using a WDT tool, gently move the thin needles through the ground coffee. The primary goal is to break up any clumps and distribute the coffee more evenly across the filter basket. You don't need to stir aggressively. The dosing funnel provides extra height, making it less likely for ground coffee to spill out.

Once the coffee is distributed, carefully remove the funnel from the portafilter. Check that the ground coffee is roughly level, then tamp straight and with controlled pressure.

A practical sequence is:

  1. weigh coffee beans;
  2. dry the portafilter;
  3. place the dosing funnel;
  4. grind coffee;
  5. optionally use WDT;
  6. remove the dosing funnel;
  7. level and tamp the coffee;
  8. brew espresso;
  9. check espresso output and flow time.

If you want to know exactly how much coffee goes in and how much espresso comes out, a coffee scale with a timeris a logical addition. This allows you to truly measure differences instead of just relying on feel.

Check out the WDT tool
Geert-Jan geeft thuis een persoonlijke barista workshop op een pompgestuurde La Pavoni espressomachine en koffiemolen.

The ring keeps the coffee in, but that's not all there is to it

A more stable dose is a good step. However, an espresso can still extract too quickly, too slowly, or differently than expected. In that case, you need to look at the entire extraction process, not just the tool on your portafilter.

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Why a dosing funnel doesn't automatically control your espresso extraction

This is exactly what I regularly encounter during private workshops. Someone has bought a nice tamper, a WDT tool, a dosing ring, and sometimes even a distributor. Yet, one time the espresso tastes good, and the next it runs too fast or too slow.

The accessories can be useful, but they don't do the thinking for you.

For a reproducible espresso, several things need to align: how much ground coffee you use, how fine you grind, how evenly the coffee is distributed in the portafilter, how you tamp, how much espresso you extract, and how long that takes.

A dosing ring primarily helps before that process by better keeping your entered dose in the portafilter.

If you want to learn to understand this whole interplay on your own machine and coffee grinder, then my private home barista workshopis the most personalized route. We will actually work with your espresso machine, your grinder, and the steps you perform every day at home.

If you prefer to learn independently, The 3 Golden Rules of Espressodelves deeper into the basics that make your extraction controllable.

If you are just starting out, you can begin with the free introduction to Espresso Under Control.

Master your own machine

Frequently asked questions about dosing rings for espresso

What size dosing funnel do I need?

That depends on your exact portafilter and the specific accessory. Many compact machines use 51mm, many 54mm Sage and Solis systems work with matching accessories around 53.3mm, and many larger commercial systems fall into a 58 or 58.5mm route. Always check your exact model.

Is 53.3 mm the same as 54 mm?

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Is 58 mm the same as 58.5 mm?

{"type":"root","children":[{"type":"paragraph","children":[{"type":"text","value":"No. Both sizes are common for machines with a large commercial filter holder. Manufacturers may also specify a dosing ring, tamper, and filter basket differently. Therefore, check which size the manufacturer recommends for the ring for your machine."}]}]}

Do I need a different dosing ring with a built-in coffee grinder?

Sometimes it does. The ring must then not only fit on the filter basket, but the portafilter with the ring on it must also be able to be placed under the grinding spout. Special versions therefore exist for certain 54 mm Sage, Solis and Breville machines.

Does a dosing funnel make my espresso better?

A 30-day money-back guarantee means that you can return a product within 30 days of purchase for a full refund. This gives you the opportunity to try out the product and return it if you are not satisfied, without any financial risk. Please refer to our returns policy for the exact conditions.

I have another question.

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Which dosing ring should you choose in the end?

Don't start with the brand on the packaging, but with your actual portafilter and workflow.

If you have a smaller 51 mm portafilter, you'll often find yourself with machines like De'Longhi, Smeg, and certain compact Solis models. Many 54 mm Sage and Solis systems use fitting accessories around 53.3 mm. Quick Mill offers a significant 58 mm option, while many larger systems from brands including ECM, Rocket, Rancilio, Bezzera, Gaggia, and VBM at Barista Essentials fall into the 58.5 mm category.

If you use a built-in coffee grinder, also check if the ring physically fits under that grinder.

The main reason to use a dosing ring remains simple:ensure that the amount of coffee you've weighed actually ends up in your filter basket.

This eliminates one source of unnecessary variation from your espresso routine.

If your espresso is still too fast, too slow, sour, bitter, or inconsistent afterwards, the next step isn't automatically yet another accessory. Then it's time to view grind, dose, distribution, tamping, espresso output, and extraction time as a whole.

That's exactly what I help you with at The Barista Shop: understanding what happens during brewing, so you can make better coffee at home.

Do you want to dose cleaner and also learn why your espresso tastes and flows differently at one setting than at another? During a private workshop, we work step-by-step with your own machine and grinder.

View the private barista workshop
Zwarte doseerring op portafilter tijdens WDT om morsen te beperken en rustiger espresso voor te bereiden

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Gids vol informatie voor het kiezen van de juiste doseerring die bij jouw espressomachine past

☕ Which dosing funnel do you need? Size guide for 51, 53.3, 58 and 58.5 mm

A dosing funnel seems like a small detail in your espresso routine. You place it on your portafilter, grind your coffee, and prevent some of the ground coffee from ending up next to the filter basket. Especially when you grind directly into your portafilter or use a WDT tool, it can surprisingly provide a lot of peace of mind.

During private home workshops, I regularly see why such a ring can be useful. If you weigh 18 grams of coffee, but a different amount ends up on your countertop each time during grinding or distribution, you won't always have 18 grams in your filter basket. This unknowingly changes the ratio at which your espresso is brewed.

The most important question, therefore, is not just whether you want to use a dosing funnel, but especially which size actually suits your portafilter and working method. In this guide, you will find the most important sizes, commonly used machine families, and the separate route for machines with a built-in coffee grinder.

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