It's about 200,000 times as long as an Aspirin
In other words, 3,000 meters is 210,000 times the length of an Aspirin, and the length of an Aspirin is 0.00000480 times that amount.(for up & up aspirin, 325mg, regular strength tablets) (a.k.a. acetylsalicylic acid, a.k.a. ASA)
A single aspirin tablet measures 0.014 meters in diameter. One of the most common medicines in the world and a foundation of worldwide health systems, an estimated 40,000 metric tons of aspirin are consumed each year.
It's about 2,000,000 times as wide as a Strand of Spaghetti
In other words, 3,000 meters is 1,800,000 times the width of a Strand of Spaghetti, and the width of a Strand of Spaghetti is 0.000000560 times that amount.(average; restaurant and supermarket applications) (based on FMA Omcan Italian Made TR50 Counter Top Pasta Machine Extruder 13317)
An average strand of restaurant-grade spaghetti measures 0.0017 meters in thickness. In 2010, a California Buca di Beppo set a world record by preparing a 13,780-lb bowl of spaghetti, served in a swimming pool.
It's about 2,500,000 times as long as a Grain of Sand
In other words, the length of a Grain of Sand is 0.0000004170 times 3,000 meters.(medium grain)
Composed mainly of quartz, mica, feldspar, or magnetite, a grain of sand measures an average of 0.00125 meters. In 2007, a team of seven in Myrtle Beach created the world's tallest sandcastle, which measured 15.10 m (49.55 ft) in height.
It's about 30,000,000 times as wide as a Strand of Hair
It's about 30,000,000 times as tall as a sheet of Paper
It's about 400,000,000 times as long as a Red Blood Cell
In other words, the length of a Red Blood Cell is 0.00000000250 times 3,000 meters.(a.k.a. RBCs, a.k.a. haematids, a.k.a. erythrocyte, a.k.a. erythroid cells, a.k.a. red blood corpuscles)
An average Red Blood Cell measures 7.5 µm (micrometers) in diameter. An average human has 20 - 30 trillion red blood cells in their body and each cell completes a circulatory lap in about 20 seconds.
It's about 500,000,000 times as long as a Cell's Nucleus
In other words, the length of a Cell's Nucleus is 0.00000000200 times 3,000 meters.(for animal cell)
The nucleus of an animal cell measures an average of 0.00000600 meters. The nucleus is the largest organelle in these cells, accounting for about 10% of the cell's total volume.