How big is Emma Maersk?
Emma Maersk: 397 m (1,302 ft). Measured as length — overall length.
Source: Wikipedia — Emma Mærsk
Where it sits
Among the 14 vehicles & ships on this page Emma Maersk ranks 1st from the top by size. Nothing else in its group is bigger here, and the smallest, Tesla Model 3 at 4.69 m, is 84.6× smaller.
Stand an adult of 1.7 m beside it and the ratio is 234×: you would need 233 people stacked head to foot to match its size.
In everyday distances
A football pitch is about 105 m long. Emma Maersk is 3.78× that, which puts it at 3.8 pitch lengths from end to end.
Walking at an easy 1.4 m/s you cover 397 m in 4.7 minutes. A jet at 900 km/h covers it in 1.6 seconds.
Next to its neighbours in size
The nearest thing larger than it in this collection is Willis Tower at 442 m (1,450 ft), 1.11× the size. Note the two figures are not the same measurement: for Emma Maersk it is length, for Willis Tower it is height.
The nearest thing smaller is Allure of the Seas at 362 m (1,188 ft), so Emma Maersk is 1.1× as big as it. They sit in the same group.
Against fixed yardsticks
Against three fixed yardsticks — Emma Maersk is 1.2× the size of Eiffel Tower (330 m); Emma Maersk is 13.3× the size of blue whale (29.9 m); Earth (12,742 km) is 32,096× the size of Emma Maersk.
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 Emma Maersk?
397 m (1,302 ft), measured as length: overall length.
Where does the Emma Maersk rank among vehicles & ships?
Number 1 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?
Willis Tower, at 442 m, is 1.11× the size.
What is the next size down?
Allure of the Seas, at 362 m, is 1.1× 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.