How big is Boeing 737-800?
Boeing 737-800: 39.5 m (130 ft). Measured as length — overall length.
Source: Wikipedia — Boeing 737 Next Generation
Where it sits
Among the 14 vehicles & ships on this page Boeing 737-800 ranks 12th from the top by size. The largest in the group is Emma Maersk at 397 m, which is 10.1× the size of Boeing 737-800, while the smallest, Tesla Model 3, is 4.69 m.
Stand an adult of 1.7 m beside it and the ratio is 23.2×: you would need 23 people stacked head to foot to match its size.
In everyday distances
It fits inside a football pitch 2.7 times over — a pitch is about 105 m and Boeing 737-800 is only 39.5 m.
Walking at an easy 1.4 m/s you cover 39.5 m in 28 seconds. A jet at 900 km/h covers it in 158 milliseconds.
Next to its neighbours in size
The nearest thing larger than it in this collection is Leaning Tower of Pisa at 56 m (184 ft), 1.42× the size. Note the two figures are not the same measurement: for Boeing 737-800 it is length, for Leaning Tower of Pisa it is height.
The nearest thing smaller is Space Shuttle orbiter at 37.2 m (122 ft), so Boeing 737-800 is 1.06× as big as it. They sit in the same group.
Against fixed yardsticks
Against three fixed yardsticks — Eiffel Tower (330 m) is 8.35× the size of Boeing 737-800; Boeing 737-800 is 1.32× the size of blue whale (29.9 m); Earth (12,742 km) is 322,582× the size of Boeing 737-800.
How this figure was taken
Vehicles are listed by overall length. Rockets are the exception and are given as full stack height standing on the pad. Everything is drawn standing upright so one scale holds.
How the sizes are taken. Each figure says what it measures — height, length, diameter or elevation — and for which individual or convention. Everything is drawn standing upright on one baseline so a single scale holds, including things that are long rather than tall. Values come from the linked Wikipedia article for each item.
Read the rest — common questions
How big is the Boeing 737-800?
39.5 m (130 ft), measured as length: overall length.
Where does the Boeing 737-800 rank among vehicles & ships?
Number 12 of 14 on this site, from Emma Maersk at 397 m down to Tesla Model 3 at 4.69 m.
What is the next size up?
Leaning Tower of Pisa, at 56 m, is 1.42× the size.
What is the next size down?
Space Shuttle orbiter, at 37.2 m, is 1.06× smaller.
How reliable is the figure?
It is taken from the cited Wikipedia article and states its basis (overall length). Values are rounded, and where individuals differ the figure is a representative one, so expect small differences from other sources.