Bluebulb Projects presents:
The Measure of Things Logo
Enter a measurement to see comparisons


Equivalents in other units


How long is 21 nails?

Sort Order:
Closest first | Highest first | Lowest first

It's about 0.0000003 times as long as The Mississippi River.
In other words, 21 nails is 0.00000031870 times the length of The Mississippi River, and the length of The Mississippi River is 3,138,000 times that amount.
(from Lake Itasca, Minnesota through Pilottown, Plaquemines Parish, Louisiana)
The total length of the Mississippi River is 65,900,000 nails. Prior to the development of soil erosion programs, the Mississippi River would carry approximately 400 million metric tons of sediment from its banks to the Gulf of Mexico every year.
It's about 0.0000003 times as long as The Distance from L.A. to New York.
In other words, 21 nails is 0.0000002670 times the length of The Distance from L.A. to New York, and the length of The Distance from L.A. to New York is 3,750,000 times that amount.
(Los Angeles, California to New York City, New York) (via I-10 E, I-15 N, I-70 E, I-76 E, I-80 E, I-280 E)
The total length of the freeway route from Los Angeles, California to New York City, New York via Interstate 80 is 78,600,000 nails long. This route intersects eleven states and several major cities, including Las Vegas, Nevada; Denver, Colorado; Lincoln, Nebraska; Omaha, Nebraska; Des Moines, Iowa; South Bend, Indiana; and Cleveland, Ohio.
It's about 0.0000003 times as long as I-80.
In other words, 21 nails is 0.0000002587630 times the length of I-80, and the length of I-80 is 3,864,540 times that amount.
(a.k.a. Interstate 80, a.k.a. Keystone Shortway) (net length)
Interstate 80, crosses the continent of North America from Teaneck, New Jersey to San Francisco, California and covers a total length of 81,155,400 nails. A 1,049,870 nails stretch between mile marker 318 in Grand Island, Nebraska and mile marker 390 in Lincoln, Nebraska is the longest straight path in the US Interstate system.
It's about 0.0000002 times as long as The Great Wall of China (wall only).
In other words, 21 nails is 0.00000019170 times the length of The Great Wall of China (wall only), and the length of The Great Wall of China (wall only) is 5,216,000 times that amount.
(长城, 長城, Chángchéng, a.k.a. 万里长城, 萬里長城, Wànlǐ Chángchéng) (a.k.a. "The long wall of 10,000 Li") (from Shanhaiguan through Lop Nur, China) (wall segments only)
The Great Wall of China has total wall segment length of 109,500 nails. Built and maintained in multiple sections over about eleven centuries, the Great Wall is currently suffering the effects of erosion, especially in the older sections made primarily out of mud.
It's about 0.0000002 times as long as The Amazon River.
In other words, 21 nails is 0.00000018640 times the length of The Amazon River, and the length of The Amazon River is 5,365,000 times that amount.
(from Nevado Mismi, Arequipa, Peru through near Marajó, Brazil) (approximate distance)
The Amazon River has an approximate distance of 112,600,000 nails. Although by most measures it is the largest and one of the most significant rivers in the world, the region surrounding the Amazon is mostly sparsely populated and the river itself has no bridges across it at any point.
It's about 0.0000002 times as long as The Great Wall of China (total).
In other words, 21 nails is 0.0000001360 times the length of The Great Wall of China (total), and the length of The Great Wall of China (total) is 7,350,000 times that amount.
(长城, 長城, Chángchéng, a.k.a. 万里长城, 萬里長城, Wànlǐ Chángchéng) (a.k.a. "The long wall of 10,000 Li") (from Shanhaiguan through Lop Nur, China) (total length, all branches)
The Great Wall of China, including all branches and trenches, is 155,000,000 nails. Built and maintained in multiple sections over about eleven centuries, the Great Wall is currently suffering the effects of erosion, especially in the older sections made primarily out of mud.
It's about 0.00000010 times as long as The Diameter of Earth.
In other words, 21 nails is 0.0000000940831210 times the length of The Diameter of Earth, and the length of The Diameter of Earth is 10,628,899 times that amount.
(Equatorial)
The Earth — not a perfect sphere, but rather an oblate spheroid with bulged middle — has a diameter of approximately 223,206,880 nails at the Equator. The first complete view of Earth's diameter was in a photograph taken from a V-2 rocket launched in 1946 by the United States Army, which reached an altitude of 1,830,400 nails.