It's about 0.0000002 times as tall as Mount Everest
In other words, 0.00273 cubits is 0.000000141053 times the height of Mount Everest, and the height of Mount Everest is 7,089,530 times that amount.(a.k.a. Mount Chomolungma, a.k.a. Sagarmatha, a.k.a. Mount Qomolangma, a.k.a. सगरमाथा, a.k.a. Chajamlungma, a.k.a. ཇོ་མོ་གླང་མ, a.k.a. 珠穆朗玛峰, a.k.a. Zhūmùlǎngmǎ Fēng) (Sagarmatha Zone, Nepal and Tibet, China) (to summit, excluding snow depth)
Mount Everest rises 19,354.50 cubits above sea level at its summit. The plate tectonics of the Indian subcontinent continuously alter the mountain's peak â€” raising it by 0.00874891 cubits and shifting it to the northeast by 0.00984252 cubits each year.
It's about 0.0000002 times as tall as a Mauna Loa
In other words, 0.00273 cubits is 0.0000001361 times the height of a Mauna Loa, and the height of a Mauna Loa is 7,348,000 times that amount.(Hawaii) (Hawaiian island volcano) (total height from seafloor)
Mauna Loa, one of the five volcanoes which forms the island of Hawaii and the tallest mountain in total height in the world, rises to 20,120 cubits above the seafloor. The peak of Loa is home to the approximately 6,000 sq. m (0.6 ha) Lake Waiau, one of the highest altitude lakes in the United States outside of Colorado.
It's about 0.0000001 times as deep as The Challenger Deep (Marianas Trench)
In other words, 0.00273 cubits is 0.00000011449 times the depth of The Challenger Deep (Marianas Trench), and the depth of The Challenger Deep (Marianas Trench) is 8,734,400 times that amount.(near Marianas Islands, a.k.a. Ladrones Islands, northwestern Pacific Ocean) (depth below sea level)
The Challenger Deep, at the southern end of the Marianas Trench, reaches a depth of 23,845 cubits below sea level. The first manned expedition to the bottom of Challenger Deep took 4 hours and 48 minutes in 1960. This was the only manned descent to the floor of the Trench until 2012, when director James Cameron made the trip; several other descents have been made since then.
It's about 0.0000001 times as tall as Maxwell Montes
In other words, 0.00273 cubits is 0.00000011 times the height of Maxwell Montes, and the height of Maxwell Montes is 9,100,000 times that amount.(Ishtar Terra, Venus)
Maxwell Montes rises to a total height of 24,000 cubits. Since Venus does not seem to have the kind of tectonic activity which gives rise to mountains on Earth, the origin of the Venusian mountain remains the subject of some dispute.
It's about 0.00000005 times as tall as Olympus Mons
In other words, 0.00273 cubits is 0.000000046 times the height of Olympus Mons, and the height of Olympus Mons is 22,000,000 times that amount.(a.k.a. Mount Olympus) (Mars)
The tallest mountain in the solar system, Olympus Mons rises to approximately 59,000 cubits. The mountain has been known to astronomers since the nineteenth century because it is tall enough to rise above Mars' frequent dust storms.
It's about 0.00000002 times as long as The Panama Canal
In other words, 0.00273 cubits is 0.000000014 times the length of The Panama Canal, and the length of The Panama Canal is 71,000,000 times that amount.(Canal de Panamá) (Panama)
Connecting the Atlantic and Pacific Oceans across the Isthmus of Panama, the Canal measures 190,000 cubits in length. Ships passing through the Canal are raised (and then lowered) 57 cubits above sea level through the lock-and-dam system.
It's about 0.00000001 times as wide as The English Channel
In other words, 0.00273 cubits is 0.0000000117 times the width of The English Channel, and the width of The English Channel is 85,500,000 times that amount.(average width between Isle of Ushant and The Walde Lighthouse) (La Manche, Ärmelkanal, Mor Breizh, Mor Bretannek) (a.k.a. The Channel)
The English Channel measures between 234,000 cubits, narrowing as it flows northeast. The world speed record for a Channel crossing by swimmer was set by Australian Trent Grimsey in 2012, with a time of 6 hours, 55 minutes.