54 mm vs 58 mm Portafilter: Does Size Matter?
Updated November 13, 2026
We research specs and owner feedback; we don't run hands-on tests. As an Amazon Associate I earn from qualifying purchases.
58 mm is the commercial standard, so it has the widest choice of baskets, tampers and accessories. 54 mm is used on most Breville home machines and is slightly more forgiving because the coffee bed is deeper. Portafilter size alone does not decide how good the espresso tastes; the grinder and the coffee matter far more.
| 54 mm | 58 mm | |
|---|---|---|
| Found on | Most Breville home machines | Café machines and many enthusiast home machines |
| Accessories | Good choice, but brand-specific | Widest choice, interchangeable across brands |
| Typical double dose | 16 to 19 g | 17 to 20 g |
| Forgiveness | Slightly higher | Slightly lower |
Portafilter size by machine
| Machine | Portafilter | List price |
|---|---|---|
| CASABREWS CM5418 | 51 mm | $159.99 |
| De'Longhi Dedica Deluxe | 53 mm | $279.95 |
| Breville Bambino | 54 mm | $299.95 |
| Breville Bambino Plus | 54 mm | $499.95 |
| Breville Barista Express | 54 mm | $699.95 |
| Breville Barista Express Impress | 54 mm | $799.95 |
| Breville Barista Pro | 54 mm | $849.95 |
| Breville Barista Touch | 54 mm | $999.95 |
| Gaggia Classic Pro E24 | 58 mm | $549 |
| Rancilio Silvia (V6) | 58 mm | $995 |
| Breville Oracle Jet | 58 mm | $1,999.95 |
Should size affect what you buy?
- Not much, for most people. Choose on heat-up time, grinder, milk frothing and budget first.
- It matters if you like to tinker. With a 58 mm machine such as the Gaggia Classic Pro E24 or Rancilio Silvia (V6) or Breville Oracle Jet, almost any aftermarket basket or tamper fits.
- Buy accessories by exact size. A tamper should match the basket: 53.3 mm tampers for 54 mm Breville baskets, 58.5 mm for 58 mm baskets.
Related guides
- Pressurized vs non-pressurized baskets
- Best espresso machines under $1,000
- Compare machines side by side
Frequently asked questions
Is a 58 mm portafilter better than 54 mm?
Not by itself. 58 mm is the commercial standard and has more accessory choice, but 54 mm machines can make equally good espresso. Grinder quality and fresh coffee matter more.
What size portafilter does Breville use?
Most Breville home machines, including the Bambino and Barista series, use 54 mm. Higher-end models such as the Oracle series use 58 mm.
Can I use a 58 mm tamper on a 54 mm basket?
No. The tamper must match the basket. For 54 mm Breville baskets, look for a tamper of about 53.3 mm.