Common Sizes
Commercial Standard
Dose Range
Home Standard
Understanding Portafilter Sizes
Portafilter size refers to the diameter of the filter basket where coffee grounds sit. This crucial measurement affects extraction quality, dose capacity, and overall espresso performance. Larger diameters typically allow for more even extraction and better flavor development. Understanding your machine's portafilter size is essential for optimal espresso preparation.
The size isn't just about capacity - it impacts water distribution, extraction uniformity, and the range of doses you can pull. Most home machines use 51-54mm portafilters, while commercial machines standardize on 58mm. When choosing a machine or upgrading, consider that portafilter size affects workflow and the types of shots you can consistently produce.
✓ Size Affects:
- • Maximum dose capacity
- • Extraction uniformity
- • Basket availability
- • Compatibility with accessories
- • Overall shot quality potential
Quick Answer
58mm is the commercial standard offering best extraction quality. 54mm provides a good balance for home users. 51mm works for smaller doses but limits capacity. Choose based on your machine and shot preferences.
Common Portafilter Sizes
51mm Portafilter
Compact size for entry-level machines
- Typical Dose: 12-18 grams
- Best For: Single shots, small kitchens
- Pros: Compact, less coffee waste
- Cons: Limited capacity, harder to distribute
- Found On: Gaggia Classic, Rancilio Silvia
53mm Portafilter
Mid-size for versatile home use
- Typical Dose: 14-20 grams
- Best For: Most home espresso
- Pros: Good balance, widely available
- Cons: Less common than 54mm
- Found On: Some Breville models
54mm Portafilter
Popular home espresso standard
- Typical Dose: 16-22 grams
- Best For: Serious home baristas
- Pros: Great extraction, many basket options
- Cons: Requires more coffee
- Found On: Breville Barista Express, many prosumer
58mm Portafilter
Commercial-grade professional standard
- Typical Dose: 18-21+ grams
- Best For: Professional-quality shots
- Pros: Best extraction, industry standard
- Cons: Large, requires more coffee
- Found On: La Marzocco, Rocket, most prosumer
Size Comparison Chart
| Size | Dose Range | Best Use | Extraction Quality | Basket Availability |
|---|---|---|---|---|
| 51mm | 12-18g | Singles, light use | Good | Excellent |
| 53mm | 14-20g | All-purpose | Very Good | Good |
| 54mm | 16-22g | Home enthusiast | Excellent | Excellent |
| 58mm | 18-21g+ | Professional | Best | Best |
Choosing the Right Size
Consider Your Needs:
- Daily Volume: More shots = larger size
- Drink Types: Singles vs doubles
- Skill Level: Beginners may prefer smaller
- Coffee Budget: Larger size uses more coffee
- Counter Space: 58mm needs more room
Machine Compatibility:
- Entry Machines: Usually 51mm
- Mid-Range: Often 54mm
- Prosumer: 54mm or 58mm
- Commercial: Always 58mm
- Upgrades: Check machine compatibility
Basket Types by Size
51mm Baskets
Single: 7-10g | Double: 12-18g | Pressurized: Available for beginners
54mm Baskets
Single: 14-16g | Double: 18-22g | Ridgeless: Available for advanced
58mm Baskets
Single: 16-18g | Double: 18-21g | Triple: 20-24g available
Maintenance Tips
Care Guidelines:
- Clean basket after every shot
- Backflush weekly for 54mm and 58mm
- Check gasket wear monthly
- Replace baskets every 6-12 months
- Use appropriate cleaning tools for size