Bialetti Moka Pot Sizes: A Guide to Cost-Effective Coffee

The Bialetti Moka Express, a classic stovetop coffee maker and a fixture in many kitchens, offers a simple and effective method for brewing strong, espresso-like coffee at home. With a range of sizes available, determining the most cost-effective option depends on your coffee consumption habits, the initial investment, and long-term running costs. This guide analyzes the different Bialetti Moka pot sizes to help you make an informed decision.

Understanding Bialetti "Cups"

It is important to note that the "cup" measurement used by Bialetti does not correspond to a standard US cup. Instead, a Moka pot "cup" is equivalent to a small, espresso-style shot of approximately 1.5 to 2 fluid ounces (around 60 milliliters) of brewed coffee.1, 2 When choosing a size, consider how many of these small shots you typically drink or if you plan to serve multiple people.

Side-by-Side Cost Breakdown

On a per-ounce basis, the bigger the pot, the cheaper each serving of brewed coffee. The following table provides a breakdown of brew volume, required coffee grounds, and cost based on mid-2025 street prices. Moka pots are designed to be filled to capacity for optimal brewing, so choosing a size that aligns with your daily consumption is key to avoiding waste.3

Size Brew Volume
(ml / fl oz)
Required Grounds
(approx. grams)
Average Price
(USD)
Cost per Ounce
(USD)
1-cup 60 / 2.01 ~6 g4, 8 $24.157 $12.07
3-cup 130 / 4.41 ~15-17 g4, 8 $29.997 $6.82
6-cup 250 / 8.51 ~25-27 g4, 8 $37.737 $4.19
9-cup 410 / 13.91 ~38 g8 $44.997 $3.21
12-cup 595 / 20.11 ~48-50 g8 $64.997 $2.95

What Else Should You Consider?

Cost isn't the only factor—brewing time, bean usage, and typical serving size all matter.

Conclusion: Which Size Is the Most Cost-Effective?

Purely on dollars per ounce, the 12-cup model wins. However, the most cost-effective choice ultimately depends on your personal coffee drinking habits. An oversized pot saves money only if you actually brew and enjoy the full yield.

It is crucial to select a Moka pot size that matches how much coffee you truly drink. Aligning your purchase with your actual consumption is the most critical factor in determining its true cost-effectiveness.


Works Cited

  1. Bialetti. Official size chart showing ml per format (1–18 cups). Accessed July 2025.
  2. "Bialetti Moka Pot Size Guide." Honest Coffee Guide, accessed July 4, 2025.
  3. Legit Coffee Co. "Bialetti Moka Pot Express (3 Cup)." Accessed July 2025.
  4. "How Much Coffee to Use in a Moka Pot." Epicurious and Serious Eats brewing guides, accessed July 4, 2025.
  5. "Moka Pot Roundup—Size, Heat, and Cleanup Advice." The Spruce Eats, accessed July 4, 2025.
  6. Food & Wine editor review praising long-term value of the Moka Express. Accessed July 4, 2025.
  7. Survey of online retailers including Amazon, Walmart, and Zabar's. Prices recorded in mid-2025 and subject to change.
  8. "Coffee to Water Ratios for Moka Pots." Various Coffee Enthusiast Forums (e.g., Reddit), accessed July 4, 2025.