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With the help of a 20-centimeter ruler, you can measure an 8-inch-long item. But if you don’t have a ruler or any other object to aid you in finding the exact measurement, how can you measure 8 inches? One solution is to use any item that is equivalent to 8 inches in length to approximate the measurement.

What do you mean by Eight inches long?

8 inches is precisely equivalent to 20.32 centimeters or 203.2 millimeters. 8 inches long items and products can be found in our daily lives. 

How Long is Eight Inches: Conversions to Remember

You can use the conversion factor:

1 inch = 2.54 centimeters to convert inches to centimeters. 

Therefore, Eight (8) inches is equal to 8 × 2.54 = 20.3 centimeters.

How Long is 8 Inches: 18 Things Equal to 8 Inches

  1. Hex Bolt
  2. Knitting Needles
  3. Average Banana
  4. Adjustable Wrench
  5. Drone Propeller
  6. Standard Pencil
  7. Packaging Box
  8. Surgical Scalpel
  9. Samsung Galaxy Tab
  10. Kitchen Knife
  11. Pliers
  12. iPad Mini
  13. Flashlight
  14. Flat File
  15. Small Hockey Stick Blade
  16. Hacksaw Blade
  17. Necklace
  18. Kitchen’s Knife

Small Hockey Stick Blade

A small hockey stick blade is usually 8 inches long, making it useful as a reference for measuring. If you enjoy hockey and love to play, you can use the hockey stick blade as a reference for 8 inches.

Length of Small hockey stick blade The small hockey stick blade is 8 inches long.

Adjustable Wrench

An adjustable wrench is typically 8 inches long. It’s great for tightening or loosening bolts of different sizes and fits in a small toolbox.

Length of Adjustable Watch Adjustable Watch is 8 inches long.

Kitchen Knife

A kitchen knife is about 8 inches long. It’s wider at the handle and tapers to a pointed tip, used for cutting meat, dicing vegetables, and more. However, you can also use it for measuring 8 inches when you don’t have a measuring tape.

Length of kitchen knife kitchen knife is 8 inches long.

Flat File

A flat file is about 8 inches long, used for sharpening blades and smoothing surfaces. It can be used to measure 8 inches, but don’t include the handle when measuring.

Length of Flat File The flat file is 8 inches long.

iPad Mini

The iPad Mini is about 8.3 inches long, close enough to use as a reference for 8 inches. Since many people have phones and iPads, you can use your iPad Mini as a handy substitute when you don’t have a ruler to measure 8 inches.

Length of iPad Mini iPad Mini is 8 inches long.

Necklace

An adult necklace is around 8 inches long, although it can be longer with a pendant. If you are in a situation where you need a measuring tool quickly, you can use your necklace as a substitute.

Length of Necklace Necklace is 8 inches long.

Hex Bolt

Hex bolts, used for fastening, are sometimes 8 inches long. They come with hexagonal heads and threads. These can be a good substitute to measure 8 inches.

Length of Hex Bolt  Hex Bolt is 8 inches long.

Samsung Galaxy Tab

Some Samsung Galaxy Tabs are about 8 inches long, similar in size to the iPad Mini.

Length of Samsung Galaxy Tabs Samsung Galaxy Tabs is 8 inches long.

Drone Propeller

Some drone propellers are 8 inches long. You need four of these to fly the drone, though their size can vary.

Length of Drone Propeller  The Drone Propeller is 8 inches long.

Flashlight

A typical flashlight is 8 inches long. It’s handy for camping or emergencies and fits well in a backpack. Even if you can’t find a measuring tape or ruler, you can pick up your flashlight and use it for estimation.

Length of Flashlight The flashlight is 8 inches long.

Pliers

Pliers come in different sizes, with larger ones about 8 inches long. They’re useful for cutting wires, tightening screws, and more. You can use them for the measurement of your thing.

Length of Pliers PLiers is 8 inches long.

Surgical Scalpel

A surgical scalpel is 8 inches long and 20 mm wide. It’s used for precise cutting in surgeries. But a fun fact is that you can use it as a measuring tool when you don’t have a ruler.

Length of Surgical Scalpel Surgical Scalpel is 8 inches long.

Standard Pencil

A standard pencil is about 7 inches to 8 inches long, making it a handy measurement tool in a pinch. Whether you’re stuck needing a measurement in class and don’t have a measuring tape, you can always use your pencil.

Length of Pencil Pencil is 8 inches long.

Knitting Needles

Knitting needles are around 8 inches long. They’re used for knitting and can be made from materials like wood or bamboo. You can use them to measure 8 inches.

Length of Needles Needles are 8 inches long.

Packaging Box

An 8-inch packaging box is handy for shipping smaller items like jewelry. It’s compact and deep enough for various items. Packaging boxes vary in size, but smaller ones can be estimated to be around 8 inches.

Length of Packaging Box Packaging Box is 8 inches long.

Hacksaw Blade

A hacksaw blade can be 8 inches long and is used for cutting metal, pipes, and rods. It’s mounted on a U-shaped frame. Surprisingly, you can also use it to measure 8 inches.

Length of Hacksaw Blade Hacksaw Blade is 8 inches long.

How Long is 8 Inches: Measurement of 8 inches at Home

To visualize 8 inches at home, you can use a ruler or measuring tape to directly measure the length. Alternatively, use a common item for reference: an average coffee cup or a standard-sized smartphone is typically about 8 inches long. You can also use a piece of paper and mark 8 inches on it with a ruler to use as a guide.

How Long is 8 Inches: Measurement of 8 inches while Traveling

While traveling, you might not always have a ruler handy, but you can use everyday objects for comparison. For instance, a standard dollar bill is about 6 inches long, so 8 inches is roughly a bit longer than a one dollar bill. Another option is to use your hand span—average hand spans are usually around 7-8 inches when stretched wide.

How Long is 8 Inches: Fun Facts

Average Length of a Hot Dog

Many hot dogs are close to 8 inches in length, which is a fun and relatable reference for food lovers.

Standard Postcard

While slightly smaller, some postcards are nearly 8 inches long, making them a good visual comparison.

Width of a Small Pizza Box

A small pizza box, often used for personal-sized pizzas, is typically around 8 inches in width.

Length of a Basic Calculator

Many basic handheld calculators measure around 8 inches long, making them easy to reference.

Length of a Standard Key Holder

Some compact key holders or organizers are about 8 inches long, useful for keeping your keys in check.

Length of a Compact Wallet

Compact wallets often measure close to 8 inches in length when closed, making them easy to visualize.

Height of a Small Plant Pot

Some small plant pots, especially those used for herbs, are around 8 inches in height.

Length of a Baseball Bat Handle

The handle portion of a standard baseball bat can be around 8 inches long, giving a good reference for sports fans.

Final Thoughts

Eight inches is roughly the length of a large smartphone or a standard kitchen knife. It’s also about the width of a sheet of notebook paper turned sideways.