Twenty centimeters is one of those measurements you hear all the time — on product listings, in recipes, in school projects — but rarely stop to actually picture. Is it bigger than your phone? Smaller than a ruler? Close to your hand?
This guide breaks it down using real, everyday objects so you can visualize 20 cm instantly, without ever picking up a tape measure. We’ll cover the exact conversions to inches, feet, and meters, a few simple tricks to estimate it using your own hands, and ten familiar items that are almost exactly this size.
How Big Is 20cm?
Twenty centimeters is a medium-length measurement — longer than most smartphones, but noticeably shorter than a standard 30 cm ruler. It sits comfortably in the “handheld” size range, which is exactly why so many everyday objects, from kitchen tools to stationery, are designed close to this length.
20cm to Inches to Feet
Here’s the quick conversion breakdown:
- 20 cm = 7.87 inches (just under 8 inches)
- 20 cm = 0.656 feet (a little more than half a foot)
- 20 cm = 200 millimeters
How Many Inches Is 20cm?
Twenty centimeters equals 7.87 inches, which most people round to a simple “just under 8 inches.” This makes it easy to picture using anything you already associate with the 8-inch mark, like a small dinner plate or a standard smartphone with a bit of room to spare.
Read More Measurement : How Long Is 20 cm
What Does 20cm Look Like?
Picture two credit cards placed end to end, or a standard banana lying on the counter. Twenty centimeters is also close to:
- The width of two adult hands placed side by side
- Roughly two-thirds of the way across a standard 30 cm ruler
- Slightly shorter than the length of A4 paper’s short side
20cm in Metres
In metric terms, 20 cm is simply 0.2 meters — one-fifth of a full meter. This is a useful reference when working with metric tape measures or comparing product dimensions listed in meters instead of centimeters.
How to Estimate 20cm Without a Ruler
You don’t always need a measuring tool nearby. A few simple body-based tricks can get you a close enough estimate for everyday situations.
20cm to Inches to Feet
As a quick refresher before estimating: 20 cm equals about 7.87 inches or 0.656 feet, so you’re aiming for something just under 8 inches long.
Using Your Hand
An average adult hand, measured from the wrist to the tip of the middle finger, is close to 18–20 cm long. Stretching your hand flat against an object gives a fast, reasonably accurate estimate of this length.
Using Your Fingers
If your hand alone isn’t quite enough, add two to three finger widths to the length of your smartphone (most phones measure around 15 cm) to land close to 20 cm. This trick works well when you’re comparing smaller items side by side.
Using Common Objects
Everyday items you already own are often the fastest way to estimate 20 cm. A standard banana, a dinner fork, or the short side of a sheet of A4 paper all hover right around this measurement, making them reliable visual anchors.
Quick Comparison Table
| Object | Approximate Size | Why It Matches |
|---|---|---|
| Large banana | ~18–20 cm | Common length for a full-size ripe banana |
| Dinner fork | ~19–20 cm | Standard length for full-size dinner forks |
| Small tablet width | ~20 cm | Typical width of compact tablets in landscape mode |
| TV remote control | ~18–20 cm | Common length for standard television remotes |
| A4 paper (short side) | ~21 cm | Slightly longer than 20 cm, useful as a close reference |
| Chef’s knife blade | ~18–20 cm | Popular blade length for all-purpose kitchen knives |
| Hair brush | ~20 cm | Standard length for full-size paddle brushes |
| Rolling pin handle section | ~20 cm | Common length for the handle portion of a rolling pin |
| Small plush toy | ~20 cm | Typical height for small stuffed animals |
| Decorative candle | ~20 cm | Common height for tall pillar candles |
10 Common Things That Are 20cm Big
Large Banana
A full-size, ripe banana typically measures between 18 and 20 cm long. It’s one of the most relatable comparisons since bananas are a common kitchen item almost everyone has handled at some point.
Dinner Fork
A standard full-size dinner fork measures close to 19–20 cm from tip to handle. Since cutlery sits in nearly every kitchen drawer, it’s a quick, no-measuring-required reference for this length.
Small Tablet Width
Compact tablets, when held in landscape mode, often measure close to 20 cm across. This makes tablets a useful modern comparison, especially for anyone estimating sizes for cases, stands, or bags.
TV Remote Control
Most standard television remote controls measure between 18 and 20 cm long. Since remotes are handled daily in almost every household, this is an easy, familiar way to picture the length.
A4 Paper Short Side
The shorter side of a standard A4 sheet measures 21 cm, just slightly longer than 20 cm. Holding a sheet of paper and picturing it just a touch shorter gives a fast, accurate visual reference.
Chef’s Knife Blade
Many all-purpose chef’s knives have blades measuring 18 to 20 cm long. This length is popular because it balances control and cutting power, making it a common choice for home kitchens.
Hair Brush
A standard full-size paddle hair brush typically measures around 20 cm from the top of the bristles to the end of the handle, making it one of the easiest bathroom-cabinet comparisons for this length.
Rolling Pin Handle Section
The handled section of a classic rolling pin, excluding the rolling barrel itself, often measures close to 20 cm. This makes baking tools a surprisingly handy kitchen reference for this measurement.
Small Plush Toy
Small stuffed animals and plush toys, especially the compact sizes sold as gifts or collectibles, commonly stand around 20 cm tall. It’s a familiar comparison for anyone who has shopped for toys or gifts.
Decorative Candle
Tall pillar candles used for home décor frequently measure close to 20 cm in height. This size is popular for centerpieces and shelf displays because it’s tall enough to stand out without overwhelming the space.
Read More Measurement : How Long Is 20 cm
FAQs
How long is 20cm?
20cm is about 7.87 inches, or just under 8 inches long.
How many inches is 20cm?
20cm equals 7.87 inches.
How many mm is 20cm?
20cm equals exactly 200 millimeters.
Is 20cm the same as 8 inches?
Not quite — 20cm is slightly less than 8 inches, at 7.87 inches.
How many feet is 20cm?
20cm equals about 0.656 feet, a little more than half a foot.
Final Thought
Twenty centimeters might sound like an abstract number at first, but once you connect it to familiar objects, it becomes easy to picture instantly. Whether it’s a banana, a dinner fork, a chef’s knife blade, or a small plush toy, these everyday comparisons turn a simple measurement into something you can see and hold.
The next time you spot “20 cm” on a product listing or in a recipe, just picture a large banana or a standard TV remote — either way, you’ll have a clear, reliable sense of exactly how long that is.
