13 Things That Are About 2 Millimeters (mm) Long

When it comes to tiny measurements, 2 millimeters (mm) might not seem like much—but it’s actually bigger than you think when compared to everyday objects. To put it in perspective, 2 mm equals 0.2 centimeters or about 0.08 inches.

Because this size is so small, it helps to compare 2 mm to familiar things. In this guide, we’ll explore 13 common items and distances that are about 2 millimeters long or thick.

Understanding 2 Millimeters

  • 2 mm = 0.2 cm
  • 2 mm = 0.08 inches
  • 2 mm = thickness of a nickel coin (U.S.)

This tiny length is often used in jewelry, science, engineering, and everyday life where precision matters.

13 Things That Are About 2 Millimeters Long

1. The Thickness of a Nickel Coin

A U.S. nickel coin is about 1.95 mm thick, which is nearly 2 mm.

2. A Pencil Tip

When sharpened, the tip of a wooden pencil is often around 2 mm wide at its sharpest usable point.

3. Two Credit Cards Stacked Together

A single credit card is about 0.76–1 mm thick, so stacking two makes about 2 mm.

4. A Standard Toothpick Width

Most wooden toothpicks measure 1.5–2 mm thick, making them close to 2 mm in diameter.

5. A Raindrop from Light Rain

Raindrops vary, but drizzle or small drops often measure around 2 mm in diameter.

6. A Grain of Rice (Thickness)

While the length of rice is larger, the thickness of a grain is about 2 mm.

7. Mechanical Pencil Lead (Thick Version)

Common mechanical pencils use 0.5 mm or 0.7 mm lead, but thick 2 mm lead refills exist—exactly matching this size.

8. A Watch Battery (Thin Types)

Some small button cell batteries are about 2 mm thick.

9. A Standard LEGO Brick Wall Thickness

The thin plastic wall of a LEGO brick is around 2 mm thick.

10. A Fingernail Trim

When you clip your fingernail, the growth length often measures around 2 mm.

11. A SIM Card Thickness

A standard SIM card is about 0.76 mm, but stacking two or three makes around 2 mm—close to this measurement.

12. The Width of a Ballpoint Pen Tip (Broad Type)

Ballpoint pens come in sizes like 0.7 mm, 1.0 mm, and 1.6 mm. The thicker versions reach close to 2 mm in line width.

13. A Small Ant

Some ant species measure around 2 mm long, making them a perfect living example of this size.

Visualizing 2 Millimeters

  • It’s the thickness of a nickel or two stacked credit cards.
  • It’s the size of a tiny insect or grain of rice.
  • It’s small, but noticeable—unlike a single millimeter, which is harder to see.

Final Thoughts

So, how big is 2 mm? It’s about the size of a toothpick’s width, a nickel coin’s thickness, or a grain of rice. While it may seem tiny, this little measurement is crucial in design, engineering, and even everyday life when accuracy matters.

Next time you want to imagine 2 mm, just think of two credit cards stacked together or a small ant crawling by.

Leave a Comment