How long is 490 feet?
The physical scale of 490 feet becomes clearer when it is compared with recognizable things whose dimensions have been published.
490-Foot Distance Comparisons
Compared with the minimum clear width of an accessible doorway, 490 feet is about 184 times that measurement.
U.S. accessibility standards generally require at least 32 inches of clear passage width when an accessible door is opened. Its published measurement is 2.67 feet; the comparison comes from placing that figure against 490 feet.
Source: U.S. Access Board
490 feet is about 3 times the length of an Olympic-size swimming pool.
World Aquatics specifies a 50-metre racing course for an Olympic long-course pool, equal to approximately 164 feet. The source measurement converts to 164.04 feet, so the proportional comparison with 490 feet is 3 of those measurements.
Source: World Aquatics
Compared with the maximum length of a humpback whale, 490 feet is about 8.2 times that measurement.
NOAA describes adult humpback whales as reaching lengths of approximately 60 feet in some populations. The source measurement converts to 60 feet, so the proportional comparison with 490 feet is 8.2 of those measurements.
Source: NOAA Fisheries
For scale, 490 feet spans about 81% of the height of Shasta Dam.
The Bureau of Reclamation describes Shasta Dam on California's Sacramento River as a 602-foot-high concrete gravity dam. The source measurement converts to 602 feet, so the proportional comparison with 490 feet is 81% of that measurement.
Source: U.S. Bureau of Reclamation
490 feet is about 2.7 times the height of the Leaning Tower of Pisa.
The Leaning Tower of Pisa reaches approximately 183.5 feet on its taller side above the cathedral square. Its published measurement is 183.5 feet; the comparison comes from placing that figure against 490 feet.
Source: Opera della Primaziale Pisana
490 feet is about 4.1 times the wingspan of a Boeing 737-8.
The Boeing 737-8 spans approximately 117 feet 10 inches from one wingtip to the other. The source measurement converts to 118.25 feet, so the proportional comparison with 490 feet is 4.1 of those measurements.
Source: Boeing
For scale, 490 feet spans about 2.4 times the length of USS Constitution.
The U.S. Navy lists the historic USS Constitution at 204 feet in length along its hull. Its published measurement is 204 feet; the comparison comes from placing that figure against 490 feet.
Source: United States Navy
490 feet is approximately 149.4 meters.
Using the exact conversion that 1 foot equals exactly 0.3048 meters, the unrounded result is 149.352 meters.
Reference measurements are rounded where appropriate, and naturally variable objects are described as approximate, typical, or maximum sizes.
