12 Common Things That Are 5.5 Inches Long
A few weeks ago, I was trying to figure out if a small organizer I saw online would fit in my desk drawer. The listing said it was 5.5 inches wide. I stared at that number for a good minute and honestly had no idea what that looked like in real life.
So I did what I always do. I walked around my house with a measuring tape and started checking everyday objects until I found ones that actually matched. And I was genuinely surprised by how many common things landed right at 5.5 inches.
In this article, I am going to share 12 things that are 5.5 inches long that you can use as a mental reference anytime. No ruler needed. By the end of this, you will be able to picture 5.5 inches instantly just by thinking of something you already use every day.
How Long Is 5.5 Inches Exactly?
Before we get into the list, let me give you a quick idea of where 5.5 inches sits, so it makes more sense.
5.5 inches is equal to:
- 13.97 centimeters
- 139.7 millimeters
- About 0.46 feet
The easiest way I think about it is this. Grab a standard 12-inch ruler and find the halfway point, which is 6 inches. Now go just a tiny bit back from there. That short space before the 6-inch mark is 5.5 inches. It is smaller than most people expect and bigger than most people think when they first hear it.
It is about the size of something that fits perfectly in your hand without your fingers wrapping all the way around. Not too small. Not too big. Right in that comfortable middle zone.
Why It Helps to Know What 5.5 Inches Looks Like
Knowing this measurement by heart actually saves you a lot of trouble in real life. Here are a few situations where this comes in handy:
- When you are shopping online, and a product says 5.5 inches, but there is no size reference photo
- When you are setting up a small shelf or drawer organizer and need to know if something will fit
- When you are doing a DIY or crafting project and your measuring tape is not nearby
- When you are helping your kids with a school project and need a quick size reference
Once you lock in a few of these reference objects in your head, 5.5 inches becomes as easy to picture as the palm of your hand.
12 Common Things That Are 5.5 Inches Long
1. A Standard Bic Pen Without the Cap
This is probably the most reliable 5.5-inch reference you will ever find, and it is sitting in your drawer or pencil case right now.
I measured a standard Bic Cristal ballpoint pen myself, and without the cap, it comes in at almost exactly 5.5 inches long. Bic has been making this pen the same way since 1950, and the barrel length has stayed consistent across billions of units sold. The cap adds a bit more length, so make sure you pull it off before using it as your reference.
Next time someone mentions 5.5 inches, just think of a Bic pen without its cap. That is your number right there, and it is probably the most accessible reference on this entire list.
2. A Butter Knife
I pulled one out of my kitchen drawer and measured it, and sure enough, the blade of a standard butter knife lands right around 5 to 5.5 inches, depending on the brand.
Butter knives are not designed to be sharp or long. They are made for spreading, so they need to be just the right size to fit comfortably in your hand and glide across bread or toast without too much effort. That comfort zone just happens to sit at around 5.5 inches for the blade portion.
If you look at the blade alone without the handle, most standard butter knives hit exactly this measurement. It is a great kitchen reference that is always within reach.
3. Sunglasses Frame Width
This one surprised me when I first measured it. I grabbed a regular pair of everyday sunglasses from my bedside table and measured across the front frame from one end to the other. It came out to about 5.5 inches.
This makes a lot of sense when you think about it. Sunglasses need to fit across an average adult face comfortably. The average adult face is about 5 to 5.5 inches wide at the widest point around the eyes. So, glasses manufacturers have naturally landed on this width as the standard for most adult frames.
So next time you are wearing sunglasses and someone asks what 5.5 inches looks like, just hold your glasses out flat. That width is basically your answer.
4. A Standard Birthday Card on the Short Side
Most standard greeting cards and birthday cards you find at the store are sold in a size that fits a standard A2 envelope. I measured a few birthday cards I had at home, and the short side of most of them came in at right around 5.5 inches.
The long side is usually around 4.25 inches, and the short side, which is the one you hold when you open the card, measures about 5.5 inches. This is one of those objects you probably never thought about measuring, but it is actually a really solid reference point.
The next time you get a birthday card in the mail, flip it around and measure the short side. There is a good chance you are holding a near perfect 5.5 inch reference in your hand.
5. A Dinner Knife Handle
I want to be specific here because I am talking about the handle only, not the whole knife.
Most dinner knives you see at a regular dining table have a handle that measures between 5 and 5.5 inches. This is the part you grip, and it is sized that way on purpose. Cutlery designers make handles this length because it fits comfortably in the average adult hand and gives you good control while cutting food.
I measured the handles on the dinner knives in my kitchen, and they came out to 5.4 inches, which is so close to 5.5 that your eye would never know the difference. A great and always available kitchen reference.
6. A Small Compact TV Remote
Not the big ones that come with soundbars or cable boxes. I am talking about the small compact remotes that come with bedroom TVs, streaming sticks, or older basic televisions.
I measured the remote for a small bedroom TV I have, and it landed at 5.5 inches exactly. These shorter remotes are designed to be lightweight and easy to hold in one hand. They do not need to be longer than this because they do not have many buttons. That design constraint naturally pushes them right to the 5.5-inch mark.
If you have a small or older TV remote lying around, go grab it and measure it. There is a really good chance it is sitting right around 5.5 inches.
7. A Dollar Bill Folded Slightly
A standard US dollar bill is 6.14 inches long. I know that sounds like it is too long, but here is what I found when I tried this at home.
If you fold a dollar bill just slightly, about 0.64 inches from one end, you land right at 5.5 inches. It is a tiny fold, barely noticeable, but it gets you to the right measurement. The trick is useful because almost everyone has a dollar bill nearby.
I actually use this one when I am out shopping and need a quick size reference on the go. Just fold the edge over slightly, and you have a reliable 5.5-inch measuring tool right in your pocket.
8. A Toothbrush Handle
I measured my own toothbrush this morning just to double-check before writing this, and the handle portion from the bottom to where the bristles start came in at 5.5 inches, almost exactly.
Most adult toothbrushes are designed so that the handle is comfortable to grip and maneuver around your mouth. That optimal grip length lands at around 5.5 inches for most standard models. Electric toothbrush handles are often a little different, but your regular, everyday manual toothbrush handle is a reliable 5.5-inch reference.
This is honestly one of my favorite ones on this list because it is something you pick up twice a day every single day without ever thinking about how long it is.
9. A Travel-Size Hair Comb
I have a small travel comb in my bag, and I always assumed it was tiny. When I actually measured it, it came out to 5.5 inches. That genuinely surprised me.
Travel combs and pocket combs are designed to be compact,ct but they still need to be functional enough to run through your hair. That balance between portable and useful puts most of them right in the 5 to 5.5-inch range. Full-size combs are usually closer to 7 or 8 inches, so if you specifically have a travel or pocket-size one, it is almost certainly close to 5.5 inches.
Great reference if you have one in your bag or bathroom cabinet.
10. A Nail File
I keep a nail file in my desk drawer, and I never paid any attention to how long it was until I measured it for this article. It came out to 5.5 inches pretty much exactly.
Nail files are sized specifically to be comfortable for hand use. They need to be long enough to grip properly but short enough that you can control the angle easily. That balance puts most standard nail files right in the 5 to 5.5-inch range. Emery boards, which are the basic cardboard kind, are usually on the shorter end, and metal or glass nail files tend to hit closer to 5.5 inches or a little longer.
A super easy reference that most people have sitting around at home or in their bag.
11. A Kitchen Spatula Head
This one is specifically the flat head part of a regular flipping spatula, not the handle.
I measured the head of the spatula I use for making eggs in the morning, and the flat part from the base, where it meets the handle, to the top edge came in at about 5.5 inches. This makes sense because that length gives you enough surface area to slide under a pancake or burger and flip it without things falling apart.
Next time you are cooking, flip your spatula around and look at the head. That wide flat part is a 5.5-inch visual reference right there in the kitchen.
12. Two Stacked Sticky Note Pads Side by Side
This last one is a fun DIY style reference I figured out when I was at my desk one afternoon.
A standard 3×3 sticky note pad is 3 inches wide. If you place two of them side by side, touching each other, the combined width comes out to 6 inches, which is a tiny bit over. But if you overlap them just slightly, about half an inch worth, you land right at 5.5 inches. Alternatively, a standard 3×5 sticky note is actually 5 inches on the long side, which puts it just half an inch under 5.5 inches. The sticky note method gives you a close enough approximation for almost any practical purpose. And sticky notes are literally everywhere.
How to Measure 5.5 Inches Without a Ruler
Here are the three quickest methods based on what we just covered:
- Use a Bic pen without the cap. This is the most accurate and easiest method. Just pull the cap off, and you have a perfect 5.5-inch reference in your hand instantly.
- Use a butter knife blade. Hold it up or lay it flat against whatever you are trying to measure. The blade is almost exactly 5.5 inches on most standard sets.
- Fold a dollar bill slightly. Fold about half an inch off one end, and the remaining length is a reliable 5.5-inch estimate. Works great when you are out and about.
Each of these gives you a solid approximation. For casual everyday purposes, any of these three methods will serve you well.
Frequently Asked Questions
Q1. How long is 5.5 inches in cm?
5.5 inches is equal to 13.97 centimeters. You can also round it to 14 cm for quick, everyday estimates since the difference is tiny.
Q2. What is something exactly 5.5 inches long?
A standard Bic ballpoint pen without its cap measures almost exactly 5.5 inches. A butter knife blade and a travel hair comb also land right at the measurement, making them reliable everyday references.
Q3. Is 5.5 inches close to 6 inches?
Yes, 5.5 inches is just half an inch shorter than 6 inches. It is very close, and the difference is hard to notice without a ruler. Think of it as being just a tiny bit shorter than half a foot.
Q4. How many centimeters is 5.5 inches?
5.5 inches equals exactly 13.97 ccentimetersers which most people round to 14 cm for simplicity.
Q5. What household item is 5.5 inches?
Several common household items are 5.5 inches, including a Bic pen without the cap, a butter knife blade, a travel hair comb, a nail file, and a small TV remote. These are all easy to find around the house and make reliable measuring references.
Conclusion
When I first started measuring objects around my house for this article, I honestly did not expect to find so many things sitting right at 5.5 inches. But there they were, the pen on my desk, the butter knife in my drawer, the nail file in my bag, all of them right at that same measurement.
That is the thing about 5.5 inches. Once you know what it looks like, you start seeing it everywhere.
Pick one or two references from this list that make the most sense for your daily life and lock them in your memory. The Bic pen and the butter knife are my personal favorites because they are always nearby and super easy to use on the spot.
If this helped you out, check out our other measurement guides on Measurementer.com, where we break down all kinds of lengths using everyday objects you can actually picture. Happy measuring!
