15 Best Keychain Knife Reviews [2021]

We’re all familiar with pocket knives. They’re functional, compact, and handy when we don’t have a standard knife, screwdriver, or pair of scissors readily on hand. All you have to do is haul out the pocket knife, conveniently stored in your pocket or on your belt, and pick the type of tool you need.

But what happens when you simply don’t have the pocket space to hold your knife every day? This happens when your daily routine requires you to keep other things in your pocket and your pocket knife needs to stay at home.

It’s amazing what an EDC keychain can hold. While the gadgets are smaller, they can be highly functional if you pick wisely. This includes the nifty and ever-so-useful keychain knife.

The keychain knife may be smaller than your standard pocket knife and it may only serve the purpose of cutting, but for everyday use, this if often the only tool you need. How often have you needed to cut off that irritating price tag on your new T-shirt or remove batteries from layers of packaging? This is when a good-quality keychain knife does the job perfectly.

A keychain knife can be used for a number of smaller jobs throughout your day and it takes up minimal space on your keychain and in your pocket. But, it’s about getting the best one.

We’ve done the research for you and have found 15 great keychain knives. Read on and find out which ones you need on your shopping list. Before we take you through the different products, let’s show how we selected these dynamic little knives and what features you should look out for when deciding which is the best keychain knife for your personal needs. Plus, we’re giving you our top 3 picks and what users have to say about them.

Featured Keychain Knives

Table of Contents

Selecting and Reviewing Our Recommended Self Defense Knife Keychain: Methodology

Our aim is to always help the outdoor enthusiast find the best products for enhancing their outdoor experiences. Every product we select and review needs to fulfill the specific requirement it’s been used for.

When we selected keychain knives we used criteria such as durability, size, ease, and range of use as well as safety features such as locking mechanisms. The length and construction of the blade is an important factor as well as the folded length of the knife. Another key feature is the weight of the knife. No point adding too much weight to your bunch of keys!

The functionality of the different keychain knives was important and we ensured they would fulfill most outdoor tasks relevant to their size and purpose. Lastly, we made sure the attachment features were sturdy. What’s the use of a keychain knife if you keep losing it because of flimsy keyrings?

We took into consideration the aesthetics of the design. There’s no need to lose out on looking stylish while using a nifty product.

Keychain Knife: The 15 Best of 2021

Our list of 15 best keychain knives includes our top three picks. We’ve gone the extra mile and added some positives as well as constructive critical reviews of these top products. Read on and decide which keychain knife you’re going to add to your EDC keychain.

Victorinox Swiss Army Classic SD Pocket Knife

We seriously didn’t believe you could still get a full pocket knife small enough to fit onto your EDC keychain without making it too bulky. But this Victorinox Swiss Army Classic SD Pocket Knife proved us wrong! It measures in at 2.28 x 0.71 x 0.35 inches, with a slim-fit design. It only weighs 18.14 grams, so you won’t be weighed down carry this one on your keychain.

We love the funky bright yellow color of this knife and it has 7 different functions: blade, scissors, nail file, screwdriver, toothpick, tweezers, and key ring. It’s made with high-grade stainless steel and encased in ABS/cellidor scales which guarantees toughness, durability, and resistance to most rough conditions.

What Other Users Have to Say…

“Seriously, I cannot live without this little knife as my keychain. The small size is important, as I can always have it with me. IMO, its top indispensable attachments are: scissors, knife, tweezers – in that order”.

“Bought this for my son, a new Boy Scout. It’s a traditional Swiss Army knife, just in yellow, which is my son’s favorite color, and also distinctive from the knives of his buddies. Even for my son, 11-years old, this knife is small, but my major concern is that the blades do NOT lock open, so there is always the chance for a knife to close bloodily on a finger — in fact, that happened to one of the other Scouts with a different knife. The scissors piece is also quite small, although it can be used to cut thread or fishing line. This knife is made well enough to last a long time, I believe, but it will still be too small and lacking a locking blade”.



Gerber GDC Zip Blade (31-001742)

This high-quality keychain knife is designed to also be attached to your jacket or bag zipper. It’s lightweight, small, and serves the purpose of cutting twine, opening up the packaging, or slicing through your favorite jerky.

This knife fits comfortably in the palm of your hand and has a quick-release clip, letting you use one hand to open the blade. The frame lock gives you peace of mind the blade locks safely when not being used. The blade measures 0.68 inches and the whole knife measures 1.70 inches when folded.

The blade is 7Cr17 steel which is great for high strength and hardness while the handle is made with 3Cr13 steel which means it’s corrosion, wear, and heat resistant.

What Other Users Have to Say

“… I’ve been using it for 4 years now (2016-2020), I use all the time from my keyring, you can cut through some pretty heavy stuff, stuff … I thought the little string it hangs on would break in no time, not so, 4 years of abuse and it’s still there. I must have got a good one because I have had no problem at all with it. I’m amazed at the blade, unbreakable and holds its edge, in 4 years I’ve never had to sharpen it other than a lite steel touch up, even after cutting open heavy plastic packaging…”

“This product is really a novelty item. For serious work, it’s far too small to be easily handled, and the half-inch blade doesn’t hold an edge very well. Its main appeal, I suspect, is that it can be attached to a zipper pull on a jacket and carried openly, yet unobtrusively. For any sort of serious work, this simply won’t cut it (you should pardon the expression). I’ll stick with a larger pocket knife for everyday use”.



Screwpop Ron’s Utility Knife 3.0 Keychain Multi-Tool

This solid metal keychain multi-tool may not win the best prize for style but it’s certainly multi-functional. It attaches neatly to the keychain with a solid keyring. It includes a 4-step utility blade and has a function for opening bottles. Great for those days around the barbecue!

The one-hand release blade will easily cut through rope, cardboard, and most packaging. It’s tiny, weighing in at only 0.8 ounces. You’ll hardly notice it on your keychain. What’s more, it’s magnetized so it can stick to the refrigerator, the toolbox, and anything else that’s metal.

What Other Users Have to Say

“I was glad to see the small footprint of this item – super thin, very small, lightweight. This is very versatile to carry due to the size, and the magnet prevents the blade from jiggling around in your pocket or bag while the blade is retracted. Excellent to carry. The magnet also helps retract the blade when ready and allows you to mount this thing on anything metal. While the blade is out, there is a slight wiggle to the blade-like with every other utility knife, but that is to be expected… and even with force, it does not seem like the blade is at risk of slipping out of place – solid”.

“Alright, so I got this tool to help me cut boxes, and lend to co-workers. And it’s sort of ok. Here’s the thing the blade rattles, though a second rectangular magnet could fix that. The tolerance is way too wide. That was a -1 star. The second thing is the “lock arm” when I received this item it was raised slightly. That slight raise allowed the blade to come out when placed under any stress or motion. That was a -2 for safety. Currently I’ve bent the arm slightly to help fix things, and now consider this an extremely light duty tool”.



WITHARMOUR DEM 1 3” Pocket Folding Knife Closed EDC Keychain Knife

Also known as the mini camping outdoor knife, this closed keychain knife is small (4.2 x 1.9 x 0.6 inches) and lightweight. This high-quality drop point knife is constructed with high carbon steel 440.  The handle is made with high-strength nylon fiber and offers an excellent grip for safe use.

A strong lock ensures it’s safely closed when not being used. Whether you’re camping, fishing, hunting, or simply opening a package, this knife does it all. And, the blade is strong enough to use in self-defense too.



Smith & Wesson Benji 2.5in. High Carbon S.S. Folding Keychain Knife

This high carbon, stainless steel knife looks like it could handle any situation. It’s durable with the 1.75 inches blade being constructed with 8Cr13 MoV stainless steel. The handle is made of aluminum and is black.

This compact knife uses ultra glide technology for easy and quick opening of the blade. It’s also easy to sharpen the blade whenever necessary. It only weighs 2.2 ounces and is small enough to fit in the palm of your hand without compromising on functionality.



SZHOWORLD Aluminium Alloy Mini-Knife/Keychain Pocket Knife

The sleek and elegant design of this knife would look good on any lady’s keychain (and gents for that matter too!). The knife handle is made with aluminum alloy while the 3Cr13 stainless steel blade is constructed to be durable, sharp, and useful.

The retractable blade means it can be safely concealed when not in use. The total length of this smart keychain knife is 4. 25 inches with the blade being 1.25 inches long when in use. We love the range of funky colors and it’s lightweight too, weighing in at 0.42 ounces.



SOG Keychain Pocket Knife

Here’s a knife that not only looks good but is slim enough to slide into any pocket together with keys without bulking up pocket estate space. It measures 3.5 inches when closed and has 1.8 inches long 5Cr13 MoV blade. The whole knife is constructed with good quality stainless steel.

This EDC knife operates with a one-button release function which locks the blade in place when in operation. It folds away securely when closed. Additional useful features of this knife include the bottle opener and strong, stainless steel keyring for secure attachment to the keychain.



Fish Smallest Mini Micro Handmade Key Ring Folding Pocket Knife

This fish-shaped pocket knife for your keychain is seriously small, fitting into the center of your palm quite comfortably when closed (2.1 inches). It weighs 5 grams making this a very lightweight option for key rings. The multi-purpose 1.5 inches stainless steel blade is tiny but can do simple cutting tasks around the home or outdoors.

The handle is made with strong, durable plastic and comes in a variety of colors. It doesn’t come with a locking mechanism so you’ll need to double-check it’s always properly closed when not being used. It does open and close easily, which is convenient and will save time in an emergency.