
Keurig K-Mini Black
Score: 65/100
Ninja Coffee Maker Black
Score: 77/100Rankings

The Ninja PB051 is a versatile single-serve brewer that handles both pods and grounds and includes a built-in frother, making it ideal for specialty drinks. Its trade-offs are a modest water reservoir and plastic construction. Best suited for solo drinkers or small households seeking flexibility in a compact unit.

The Keurig K-Mini is an ultra-compact single-serve brewer that excels in space-saving design and quick brewing. Its tiny water reservoir and occasional durability concerns limit convenience for heavier use. Ideal for dorms, offices, or anyone needing one-to-two cups a day.
| Attribute | ![]() | ![]() |
|---|---|---|
354.9 ml | 1,656 mlbest | |
— | 1,550 Wbest | |
| ↓ lower better | 1,425 Wbest | 1,550 W |
1.5 minutesbest | — | |
| ↓ lower better | 2,086.5 gbest | 3,897 g |
1 yearsbest | 1 yearsbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Power(1) | ||
Power Consumption (W) | 1425 W | 1550 W |
Design & Capacity(3) | ||
Water Reservoir Capacity (ml) | 354.9 ml | 1656 ml |
Weight (g) | 2086.5 g | 3897 g |
Dimensions (HxWxD) (cm) | 30.7 x 11.4 x 28.7 cm cm | 33.8x14.0x33.2 cm cm |
Features(1) | ||
Brew Size Options | 6-12 oz | 6-24 oz |

Products in the top-left offer the best value (high score, low price).

Professional reviewers commend the K-Mini for its ultra-slim matte design, one-touch simplicity, rapid brewing, and eco-friendly auto shut-off, positioning it as a perfect fit for cramped spaces and single users. However, they note its single-serve limitation, tiny water reservoir, and comparatively lower power as trade-offs for the compact form factor.
Everyday users love the K-Mini's tiny footprint, ease of use, and travel-mug compatibility, often calling it a perfect size for single drinkers and a great addition to desks or dorms. Common complaints revolve around durability issues, the need to refill water for each cup, and slower brewing compared to larger Keurig models.

“Love it!!!”

“already broke”


Choose Ninja for flexibility and frothing; choose Keurig if you only need pod brewing and prefer a metal build.

Retailer and editorial sources consistently emphasize the Ninja PB051's versatility, compact footprint, and built-in frother, positioning it as a superior alternative to typical pod-only single-serve brewers.
Consumer sentiment is neutral to positive, with strong demand and general approval of the machine's flexibility and space-saving design.