Twenty inches is hard to picture when you only see it on a spec sheet. It sits between a standard ruler and a yardstick, so it is easy to misjudge. Whether you are buying a suitcase, a canvas, or a monitor, knowing what this length looks like saves time and returns.
This guide lists 11 common objects that measure 20 inches or very close to it. You will also find quick conversions, simple measuring tricks, and answers to common questions. Always check the exact size on the product label, because brands vary.
How Long Is 20 Inches?
20 inches equals 1 foot 8 inches, or 50.8 centimeters. It is a little more than one and a half standard 12-inch rulers placed end to end.
Here are the most useful conversions:
| Unit | Equal to 20 inches |
| Feet | 1.67 ft (1 ft 8 in) |
| Yards | 0.56 yd |
| Centimeters | 50.8 cm |
| Millimeters | 508 mm |
| Meters | 0.508 m |
A quick mental check: 20 inches is about half a meter. If you shop with metric sizes, look for 50 to 51 cm.
Bedroom Items That Are 20 Inches Long
Your bed likely holds the easiest reference for this length. Both pillow types below rely on it.
Standard Bed Pillow
A standard bed pillow measures 20 × 26 inches. The 20-inch side is the width, so lay one flat and look across the short edge. Queen and king pillows keep the same 20-inch width but grow to 30 and 36 inches long.
Pillowcases follow the same rule. A standard case fits a 20 × 26 pillow with a little room to spare.
Large Decorative Throw Pillow (20×20 Inches)
Square throw pillows come in many sizes, and 20 × 20 inches is one of the most common. It looks full on a sofa or at the head of a bed without taking over the space.
Many sellers suggest a pillow insert that is slightly larger than the cover. That keeps the corners full and the shape neat.
Kitchen Items That Are 20 Inches Long
The kitchen is full of long tools. These two come close to 20 inches.
Kitchen Cutting Board
Many large cutting boards measure about 20 inches on the long side, often paired with a width of 14 to 15 inches. That is enough space to chop vegetables, carve a roast, or prep a family meal.
Before you buy, measure your counter and sink. A board this size can be awkward to wash in a small basin.
French Rolling Pin
A French rolling pin is a tapered, handleless dowel, and many are around 20 inches long. The slim ends let you feel the dough and steer it with your palms. It works well for pie crust, pizza, and cookie dough.
Some brands sell shorter or longer versions, so check the product listing.
Travel Items That Are 20 Inches Long
Travel is where this size matters most, because a few inches can decide whether a bag fits.
Carry-On Suitcase (20-Inch Luggage)
A 20-inch carry-on is a popular size for international and budget flights. Many are listed as about 20 × 14 × 9 inches. The measurement usually refers to the body of the case, and wheels and handles may add extra height.
Airline limits change often. Check your airline’s current carry-on rules before you fly, and measure with the wheels included.
Back Scratcher
Many telescoping and wooden back scratchers reach about 18 to 20 inches, which is enough to get between the shoulder blades. It is a small object, but a good everyday example of this length.
If you want to test it, hold a back scratcher against a tape measure. It is a fun way to see the size for yourself.
Technology Items That Are 20 Inches Long
Tech sizes are tricky because brands measure in different ways. Here is how to read them.
20-Inch Computer Monitor
A 20-inch monitor is measured diagonally, from one corner of the screen to the opposite corner. On a 16:9 screen, that works out to roughly 17.4 inches wide and 9.8 inches tall.
So the screen is not 20 inches across. It is a compact size that suits small desks, kitchens, and reception counters.
Standard Laptop Bag
Larger laptop bags and backpacks, especially those made for 15 to 17-inch laptops, often stand around 18 to 20 inches tall or wide. Smaller sleeves are shorter.
Measure your laptop first, then compare it with the bag’s inside dimensions rather than its outside size. Padding takes up more room than most people expect.
Home Décor Items That Are 20 Inches Long
Wall décor is one of the best places to use this measurement.
Large Picture Frame (16×20 Print Size)
A 16 × 20 inch frame holds a print with a 20-inch long side. It is a common choice for family portraits, posters, and wall art. The outer frame is usually a few inches bigger than the print, and a mat can change the visible area.
When hanging one, mark the center point first. Placing the middle of the frame about 57 inches from the floor keeps it near eye level in most rooms.
Hobby and Art Items That Are 20 Inches Long
Square Painting Canvas (20×20 Inches)
A 20 × 20 inch canvas is a favorite for acrylic and oil painting. It gives you room for detail without needing a big easel or a large storage space.
Square canvases also look modern on a wall, either alone or in a set of three or four.
Human Reference for 20 Inches Long
Average Newborn Baby Length
The average newborn is about 19.5 to 20 inches long, or roughly 49 to 50 centimeters. Healthy babies can fall a little above or below that range, and length varies with genetics and gestational age.
This is a general reference only. Your pediatrician can tell you what is normal for your baby.
Quick List: 11 Objects That Measure 20 Inches
- Standard bed pillow (20-inch width)
- Large throw pillow (20 × 20)
- Large cutting board
- French rolling pin
- 20-inch carry-on suitcase
- Back scratcher
- 20-inch computer monitor (diagonal)
- Large laptop bag
- 16 × 20 picture frame
- 20 × 20 painting canvas
- Average newborn baby
Conclusion
Twenty inches is easier to picture once you link it to everyday things. A pillow, a rolling pin, a carry-on, and a newborn all land close to it. Use these examples as a quick reference, and always confirm the exact size on a product page or with a tape measure.
When in doubt, remember the short version: 20 inches is 1 foot 8 inches, or 50.8 cm.
FAQs
What common household item is 20 inches long?
A standard bed pillow is 20 inches wide, and many cutting boards and French rolling pins are close to 20 inches long.
How long is 20 inches compared to a ruler?
It is about 1.67 times a standard 12-inch ruler, so you would need one full ruler plus 8 more inches.
Is 20 inches big or small?
It is a medium length. It is shorter than a yardstick (36 inches) but longer than a typical school ruler or a sheet of paper.
How can I measure 20 inches without a ruler?
Place a US letter sheet’s long edge (11 inches) next to its short edge (8.5 inches) for about 19.5 inches. Three and a quarter dollar bills laid end to end also come to roughly 20 inches.
Is 20 inches the average newborn baby length?
Yes, roughly. Most newborns measure between 19 and 21 inches, with an average near 19.5 to 20 inches.
How many centimeters is 20 inches?
20 inches is 50.8 centimeters. Multiply inches by 2.54 to convert.
How long is 20-inch hair?
On an average height adult, 20-inch hair usually reaches mid back or just below the bra line. The exact spot depends on your height and where the length is measured from.
