Best Product Choice is reader-supported. Product links currently go directly to retailers and are not affiliate links. Our recommendations focus on product fit, specifications, features, and value.
The Keurig K-Mini and K-Slim are both designed for narrow countertops, but they solve the “small coffee maker” problem in very different ways. The K-Mini minimizes overall footprint and asks you to add fresh water for every brew. The K-Slim is slightly wider and much deeper, but adds a 46-ounce removable reservoir and MultiStream Technology.
If you are deciding between the two, the most important question is simple: do you want the smallest possible brewer, or do you want the convenience of multiple cups before refilling?
Keurig K-Mini vs K-Slim: quick verdict
Choose the K-Mini if counter depth matters, you usually make one cup at a time, and you want the simplest, smallest Keurig setup.
Choose the K-Slim if you make several cups per day, want a removable 46-ounce reservoir, prefer dedicated 8-, 10-, and 12-ounce buttons, and want MultiStream Technology.
| Feature | Keurig K-Mini | Keurig K-Slim |
|---|---|---|
| Width | 4.5″ | 4.76″ |
| Depth | 11.3″ | 15.2″ |
| Height | 12.1″ | 12.14″ |
| Height with handle open | 16.8″ | 17.28″ |
| Water reservoir | Add fresh water each brew | 46 oz removable reservoir |
| Brew sizes | 6–12 oz | 8, 10, 12 oz |
| MultiStream Technology | No | Yes |
| Travel mug clearance | Up to about 7″ with drip tray removed | Up to 7″ with removable drip tray |
| Best for | Tightest counters and one-cup routines | Repeated daily brewing with fewer refills |
Specifications are based on Keurig’s current manufacturer listings. Retail prices and availability can change.
1. Size and counter space
Both brewers are narrow, but the K-Mini is the more space-efficient machine overall. Keurig lists it at 4.5 inches wide, 11.3 inches deep, and 12.1 inches high. The K-Slim is still very narrow at 4.76 inches wide, but it extends to 15.2 inches deep.
That extra depth matters in a genuinely small kitchen. A quarter-inch difference in width is almost meaningless; nearly four extra inches of depth can determine whether the brewer sits neatly beside another appliance or dominates the usable counter.
Winner for smallest footprint: K-Mini.
2. Water reservoir and refill convenience
This is the biggest functional difference. The K-Mini uses a one-cup reservoir: you add the amount of water you need before every brew. For one person making one cup each morning, that can actually be convenient because there is no large tank taking up space or holding water between uses.
The K-Slim uses a removable 46-ounce reservoir. Keurig says this can provide up to four 8-ounce cups before refilling. If you brew repeatedly during the day—or if two people share the machine—the K-Slim is much less repetitive.
Winner for convenience: K-Slim.
3. Brew sizes
The K-Mini lets you add enough water for a cup between roughly 6 and 12 ounces, so the amount you pour into the reservoir determines the finished brew size.
The K-Slim uses dedicated buttons for 8-, 10-, and 12-ounce servings. That is a little easier when several people use the machine because you do not have to measure the reservoir manually each time.
Winner: K-Mini for flexible small-cup volume; K-Slim for push-button repeatability.
4. MultiStream Technology
The K-Slim includes Keurig’s MultiStream Technology, which the company says uses multiple streams of water to saturate the grounds in the K-Cup pod more evenly and extract more flavor and aroma compared with its older single-stream design.
The K-Mini does not include MultiStream Technology. If this newer brewing system matters to you, the K-Slim has the advantage.
Winner: K-Slim.
5. Travel mugs and cabinet clearance
Both brewers can accommodate taller travel mugs when the drip tray is removed. Keurig lists the K-Slim as fitting mugs up to 7 inches tall, and the K-Mini can also fit a roughly 7-inch travel mug with its tray removed.
For cabinets, the K-Mini reaches about 16.8 inches with its handle open. The K-Slim reaches about 17.28 inches. Neither is extremely tall, but the K-Mini gives you slightly more vertical breathing room.
Winner for cabinet clearance: K-Mini, by a small margin.
6. Daily workflow
The K-Mini makes the most sense for a simple routine: add water, insert a pod, brew, and leave. It is also easier to move around because there is no large reservoir attached, and Keurig includes cord storage for a tidier counter.
The K-Slim makes the most sense when coffee is brewed multiple times throughout the day. Fill the reservoir once, then press a cup-size button each time. The removable tank also makes filling and cleaning easier than a fixed reservoir.
Winner: K-Mini for minimalism; K-Slim for repeated daily use.
7. Which is better for one person?
If one person makes only one cup most mornings, we would choose the K-Mini. Its smaller depth is more valuable than a 46-ounce tank you may not need.
If one person drinks three or four cups over the day, the K-Slim becomes easier to live with because the reservoir eliminates repeated refilling.
For more solo-use options, see our best coffee makers for one person.
8. Which is better for a small kitchen?
The answer depends on which dimension is limited. If your counter is shallow, choose the K-Mini. If you have enough counter depth but need a narrow machine, the K-Slim gives you more convenience while staying under 5 inches wide.
Our broader best coffee makers for small kitchens guide includes pod-free and compact carafe alternatives too.
K-Mini vs K-Slim: pros and cons
Keurig K-Mini pros
- Smaller overall footprint
- Only 11.3 inches deep
- Simple one-cup reservoir
- Flexible 6–12 ounce brewing
- Cord storage
- Usually the less expensive model
Keurig K-Mini cons
- Must add water before every brew
- No MultiStream Technology
- Less convenient for several cups per day
Keurig K-Slim pros
- 46-ounce removable reservoir
- 8-, 10-, and 12-ounce buttons
- MultiStream Technology
- Still less than 5 inches wide
- Good for multiple daily brews
Keurig K-Slim cons
- Much deeper than the K-Mini
- Takes more total counter area
- Usually costs more
Final verdict: K-Mini or K-Slim?
For the smallest kitchens and the simplest one-cup routine, we prefer the Keurig K-Mini. It is shallower, slightly narrower, and better matched to a person who wants one fresh cup without a reservoir occupying extra space.
For households that brew several cups per day, the Keurig K-Slim is the better everyday machine. The 46-ounce removable tank and MultiStream Technology justify the larger footprint if you will actually use that added convenience.
Compare on Amazon: View Keurig K-Mini on Amazon · View Keurig K-Slim on Amazon. These are standard, non-affiliate product links.
Frequently asked questions
Is the K-Slim much bigger than the K-Mini?
It is only about a quarter-inch wider, but it is significantly deeper: Keurig lists the K-Slim at 15.2 inches deep compared with 11.3 inches for the K-Mini.
Does the K-Mini have a removable water tank?
The standard K-Mini uses a one-cup reservoir that you refill for each brew. The K-Slim has a 46-ounce removable reservoir that can support several cups before refilling.
Does the K-Slim make stronger coffee?
The K-Slim does not have a separate Strong Brew button, but it does use MultiStream Technology. Keurig says this system improves saturation of the grounds to extract more flavor and aroma than its older single-stream design.
Which one is better for a dorm or apartment?
For the tightest dorm or apartment counters, the K-Mini is usually the better fit. If you have enough counter depth and dislike refilling water each time, the K-Slim is more convenient.
Our research approach
We compared the current manufacturer-listed dimensions and features for the Keurig K-Mini and K-Slim, focusing on footprint, reservoir design, brew sizes, cabinet clearance, travel-mug fit, and features that materially change everyday use. We did not claim hands-on testing where we did not perform it.
You can also read our upcoming Keurig K-Mini review for a deeper look at the smaller model.
