1.375 inches, also written as 1 3/8 inches, is a precise fractional length that quietly appears across hardware, office supplies, sports gear, and food items. This measurement equals 3.49 cm, and it shows up more often than most people realize once you start looking. Below are 24 real objects that measure close to 1.375 inches long, so you never have to guess again.
How Long Is 1.375 Inches? Quick Conversion
| Unit | Equivalent to 1.375 Inches |
|---|---|
| Inches | 1.375 in (1 3/8″) |
| Feet | 0.1146 ft |
| Yards | 0.0382 yd |
| Centimeters | 3.49 cm |
| Millimeters | 34.93 mm |
| Meters | 0.0349 m |
Quick tip: 1.375 × 2.54 = 3.49 cm. Multiply inches by 2.54 to get centimeters.
Quick Reference: 24 Things That Are 1.375 Inches Long
| Category | Common Objects |
|---|---|
| Hardware & Tools |
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| Office & Stationery |
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| Gaming & Entertainment |
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| Sports Equipment |
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| Food & Nature |
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| Electronics & Tech |
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| Personal & Fashion |
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| Kitchen & Household |
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These 24 items make it easy to picture 1.375 inches without ever pulling out a tape measure.
Hardware and Tools That Measure 1.375 Inches
The hardware aisle holds some of the most precise 1.375-inch examples around.
Standard Hex Nut
A standard hex nut, including models made by Everbilt, measures exactly 1.375 inches across its widest flat-to-flat points. This dimension fits bolts commonly used in decks, fences, and heavy equipment assembly.
A 1.375-inch hex nut requires a matching wrench size for a snug, secure grip. Hardware stores across the US stock this exact nut size in bulk bins for construction and repair projects.
Wood Screw Head
A heavy-duty wood screw, the kind designed for deck construction and thick lumber, often has a head diameter close to 1.375 inches. This wider head spreads pressure evenly and prevents the screw from sinking too far into the board.
A 1.375-inch screw head helps woodworkers select the correct countersink bit before drilling. Deck builders across the country rely on this exact head size for structural fastening jobs.
Carriage Bolt Head
A carriage bolt, a common construction fastener with a rounded top, has a head diameter that commonly lands close to 1.375 inches. The smooth, domed shape sits flush against wood or metal without needing a wrench to hold it steady.
A 1.375-inch bolt head is sized specifically so builders know exactly which drill bit clears the shank underneath. This fastener remains a staple in decks, fences, and outdoor furniture construction.
Finishing Nail
A 1.375-inch finishing nail is a standard carpentry fastener used for trim work, baseboards, and interior molding across US residential construction.
This length gives enough penetration depth to hold trim boards firmly without splitting the wood.
A 1.375-inch nail is a size carpenters reach for constantly during interior finishing projects. DIY homeowners keep this exact nail length stocked for quick trim repairs and small installations.
Small Padlock Body Width
The metal body of a small padlock, measured across its widest point, often reaches close to 1.375 inches. This compact size suits lockers, toolboxes, and small storage cases needing basic security.
A 1.375-inch padlock body is easy to carry on a keyring without adding bulk. Hardware and department stores across the US commonly stock padlocks close to this exact body width.
Office and Stationery Items Measuring 1.375 Inches
Desk drawers quietly hold several items sized right at 1.375 inches.
Jumbo Paper Clip
A jumbo paper clip measures close to 1.375 inches along its longest outer edge. This oversized clip holds thick reports and stacks of paper that a standard clip can’t grip.
A 1.375-inch paper clip is a common office and school supply used across the country. Office supply stores stock jumbo clips at this exact length specifically for bulkier document stacks.
Medium Binder Clip
A medium binder clip, including models sold by Staples, measures exactly 1.375 inches across its metal wire frame width. This size holds a full stack of handouts securely without bending or slipping.
A 1.375-inch binder clip is manufactured to tight dimensional tolerances for consistency. Teachers, office workers, and students across the US rely on this exact clip size daily.
Vintage Jacquard Ribbon Width
Vintage jacquard ribbon, the kind used in sewing and craft restoration, is frequently cut to a width of 1.375 inches. Craft sellers list ribbon by exact width so buyers know if it fits a specific trim, hem, or hat band.
A 1.375-inch ribbon width is a recognized standard cut size in vintage sewing notions, not just a rounded estimate. Fabric and craft shops across the country still carry ribbon manufactured to this exact width.
Gaming and Entertainment Items That Are 1.375 Inches
Precision matters in gaming, and several pieces of equipment hit this exact size.
Casino Precision Dice
Professional casino dice, used in regulated gambling establishments in Las Vegas and Atlantic City, measure exactly 1.375 inches on each face side. This larger size makes it easier for overhead security cameras to clearly track every roll.
A 1.375-inch casino die is manufactured to extremely tight tolerances of about 0.0005 inches per side. This precision keeps every roll fair and statistically random across thousands of games.
Steel-Tip Dart Barrel
The barrel of a steel-tip dart, including models from Winmau, sometimes measures close to 1.375 inches, not counting the tip or the flight. This length directly affects a dart’s grip and balance during a throw.
A 1.375-inch dart barrel changes how a player releases the dart compared to shorter or longer barrels. Competitive players often test several barrel lengths to find their ideal throwing balance.
Sports Equipment That Are 1.375 Inches Long
Athletic manufacturers place 1.375 inches in some widely used sports equipment.
Castle-Style Golf Tee
A castle-style golf tee, also called a stepped tee, stands about 1.375 inches tall from base to ball-resting cup. Golfers choose this shorter tee height specifically for fairway wood shots, where a lower ball position helps the clubface make cleaner contact.
A 1.375-inch golf tee is roughly half the height of a standard driver tee near 2.75 inches. Golfers across the US commonly carry this shorter tee for par-three holes and controlled approach shots.
Vintage Ping Pong Ball Diameter
A regulation table tennis ball historically measured exactly 1.375 inches, or 38 millimeters, in diameter for decades before the International Table Tennis Federation updated the standard in 2000. Today’s official ball measures 40mm, but the older 1.375-inch size remains familiar to generations of American players.
A 1.375-inch ping pong ball is still what most people picture from garage and basement table tennis growing up. This older ball size remains one of the most recognized reference points for this exact measurement.
Food and Nature Objects Measuring 1.375 Inches
Nature produces several organic items landing naturally at this exact size.
Large English Walnut
A large English walnut, still in its shell, measures approximately 1.375 inches in diameter at its widest point. Commercial walnut producers sort harvested nuts by size, and premium jumbo grades fall directly into this range.
A 1.375-inch walnut is what most grocery shoppers picture when buying the larger, premium-grade nuts. Grocery chains across the US stock walnuts sorted specifically to this diameter standard.
Jumbo Cerignola Olive
A jumbo Cerignola olive, a large Italian variety sold at specialty grocers, measures approximately 1.375 inches in length from stem end to tip. Gourmet retailers label olives at this size “colossal” or “super colossal” to distinguish them from standard canned varieties.
A 1.375-inch olive has enough interior cavity space for stuffing with cheese, garlic, or almonds. Specialty grocery stores across the country stock Cerignola olives sorted specifically to this size range.
Whole Nutmeg
A whole dried nutmeg seed, sold for home grating, commonly measures close to 1.375 inches in length. This size gives cooks enough seed material for dozens of gratings before it runs out.
A 1.375-inch nutmeg is roughly the size that fits comfortably inside a standard handheld grater. Spice aisles across US grocery stores stock whole nutmeg seeds close to this exact size.
Electronics and Tech Components That Are 1.375 Inches
Standardized tech components frequently measure close to 1.375 inches.
AA Battery Diameter
A standard AA battery, including brands like Duracell, measures approximately 1.375 inches, or 14 millimeters, across its cylindrical outer casing. Battery manufacturers maintain production tolerances within a fraction of a millimeter to ensure universal device compatibility.
A 1.375-inch battery diameter is one of the most dependable tech references for this measurement. Nearly every American household has AA batteries sitting in a drawer at this exact width.
USB-A Connector
A USB-A connector, including its full metal and plastic housing, measures approximately 1.375 inches in length. This dimension is defined by the USB Implementers Forum specification, which governs USB sizing globally.
A 1.375-inch USB connector gets handled daily on laptops, wall chargers, and flash drives across the country. This measurement remains one of the most globally consistent tech dimensions in everyday use.
Pill Bottle Cap Diameter
A standard prescription pill bottle cap, including caps used by pharmacies like CVS, measures approximately 1.375 inches in diameter. Pharmaceutical packaging engineers chose this size specifically for child-resistant safety mechanisms to work consistently.
A 1.375-inch pill cap stays consistent across different bottle brands and prescription types. This standardized diameter is one of the most common references sitting in medicine cabinets nationwide.
Personal and Fashion Items Measuring 1.375 Inches
Everyday carry items and clothing hardware regularly hit this measurement.
Large Coat Button
Oversized coat and jacket buttons used in outerwear fashion consistently measure 1.375 inches in diameter, a size dating back to 1940s and 1950s American tailoring standards. This size anchors a coat’s design without overwhelming the overall garment look.
A 1.375-inch button strikes a visual balance that fashion designers still favor for outerwear today. Tailors and clothing manufacturers across the US continue producing coat buttons at this exact size.
Wide Jewelry Bead/Spacer
A wide jewelry bead or spacer, used in chunky statement jewelry, can measure close to 1.375 inches. This width changes how many beads fit on a strand and how heavy the finished piece feels once complete.
A 1.375-inch bead is a common size jewelry makers track carefully during design planning. Craft and bead shops across the country stock spacers manufactured close to this exact width.
House Key Blade
The blade of a standard house key, the toothed metal part that turns the lock, often measures close to 1.375 inches on residential key blanks. Locksmiths use this length as a rough guide when cutting replacement keys.
A 1.375-inch key blade is one of the most portable, always-available references for this measurement. Nearly every American carries a key close to this exact length on their keyring daily.
Kitchen and Household Items That Are 1.375 Inches
Some of the most familiar 1.375-inch references sit in your kitchen right now.
Standard Bottle Cap
A standard plastic bottle cap measures exactly 1.375 inches in diameter, an industry-regulated size used by bottling manufacturers for soda, water, and juice products nationwide. This consistent sizing makes it one of the most accurate references on this list.
A 1.375-inch bottle cap shows up in every American kitchen and grocery store daily. The next drink you open gives you an instant, portable size reference for this exact measurement.
Wine Cork
A wine cork, once removed from the bottle, commonly measures close to 1.375 inches depending on the wine and cork grade used. Higher-end wines often use longer corks to seal more surface area against the bottle’s neck.
A 1.375-inch wine cork is a familiar reference found in kitchens and dining rooms across the country. Wine enthusiasts frequently save corks from bottles at this general length for crafts and displays.
Napkin Ring Width
A decorative napkin ring, used for formal table settings, commonly measures close to 1.375 inches in width when viewed from the side. This size fits comfortably around a folded cloth napkin without slipping loose.
A 1.375-inch napkin ring is a standard size sold in sets at home goods stores across the US. Hosts setting formal dinner tables reach for rings at this exact width for a polished presentation.
FAQ Section
What is 1.375 inches in fraction form?
1.375 inches equals exactly 1 3/8 inches, a standard fractional dimension used in American hardware and manufacturing.
How can I measure 1.375 inches without a ruler?
Use a medium binder clip, a jumbo paper clip, or a standard bottle cap, all reliable everyday references close to this size.
Is 1.375 inches the same as 34.93 mm?
Yes, 1.375 inches converts exactly to 34.93 millimeters, making it directly comparable to metric specifications.
What common household items are exactly 1.375 inches?
Bottle caps, medium binder clips, AA battery diameters, and house key blades are among the most accessible examples.
How do I find 1.375 inches on a ruler?
Locate the 1-inch mark, then count three eighth-inch increment marks past it to reach exactly 1.375 inches.
What sports equipment measures 1.375 inches?
A vintage regulation table tennis ball and a castle-style golf tee both measure close to 1.375 inches historically.
Conclusion
1.375 inches, or 1 3/8 inches, becomes easy to picture once tied to real objects like binder clips, bottle caps, and casino dice. These 24 items span hardware, office supplies, gaming equipment, sports gear, food, electronics, personal items, and kitchen essentials. Next time a label reads 1.375 inches, you’ll know exactly what to expect.
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John Michael is a writer and blogger with a passion for exploring the deeper meaning behind words, names, symbols, and everyday expressions. Through his work on MagazineReign.com, he delivers thoughtfully researched content that helps readers understand the language and symbolism woven into their lives.
With a commitment to accuracy and clarity, John brings a professional yet accessible voice to every topic he covers — from the origins of names to the significance of dreams. His writing bridges the gap between scholarly insight and everyday curiosity, making the search for meaning both enriching and enjoyable.
