Blue whale vs Human adult
Blue whale (29.9 m) is 17.6× the size of human adult (1.7 m).
17 human adults stacked on end would reach the height of blue whale. The gap between them is 28.2 m (92.5 ft).
The comparison in numbers
| Thing | Size | In feet | Measured as |
|---|---|---|---|
| Blue whale | 29.9 m | 98.1 ft | length |
| Human adult | 1.7 m | 5.58 ft | height |
What the scale shows
Blue whale (29.9 m) is 17.6× the size of human adult (1.7 m). The gap between them is 28.2 m (92.5 ft). Both are animals, so the figures describe the same kind of thing.
Draw both on one baseline and the smaller one fills 5.7% of the frame while the larger one runs to the top. The difference is large enough that the smaller one reads as a stub next to it.
Read the rest — 8 more sections
What each figure means
The figure for blue whale is its length (the longest reliably measured individual). The figure for human adult is its height (a round reference height).
Crossing them
Walking pace is 1.4 m/s, so crossing blue whale's 29.9 m takes 21 seconds and human adult's 1.7 m takes 1.2 seconds.
In people: blue whale is 18 adults of 1.7 m tall, human adult is 1. By size blue whale is 1st of the 23 animals on this site and human adult is 18th, so 17 places separate them in the ranking.
How to read these two figures
Before trusting any comparison, check what each number measures. The blue whale is given as a length, the longest reliably measured individual. The human adult is given as a height, a round reference height. One is a length and the other is a height, so the drawing stands them side by side by convention: everything is stood upright on a single baseline so one scale can hold. That is a fair way to compare overall extent, not a claim that the two are oriented the same way in real life.
Animal sizes vary from one individual to the next, so each figure says which individual or average it describes. Heights are taken at the shoulder or standing; lengths run nose to tail tip unless stated.
Where the pair sits among all the sizes here
Across all 86 things on this site, the blue whale is number 63 from the top and the human adult is number 81. 17 other items fall between them in size, among them whale shark (18.8 m), saltwater crocodile (5.2 m), lion (2.1 m).
Because the collection spans 13 mm up to 1,392,700 km, a ratio of 107,130,769,231× from smallest to largest, the position of a pair says a lot: both sit in the lower third of the list.
What the length ratio hides
A length ratio of 17.6× is easy to picture, but area and volume grow faster than length. If two objects had exactly the same shape, the blue whale would have about 309× the surface or footprint of the human adult, and about 5,441× the volume. For animals volume tracks weight, which is why a long animal is far heavier than its length suggests, and why a small animal cannot simply be a scaled-down copy of a large one.
The drawing above shows length only. The human adult is drawn 5.7% as tall as the blue whale, but the equivalent share of footprint would be only 0.323%, which is why the smaller one looks even slighter than the numbers alone suggest.
Time to cross each one
A sprinter holding about 10 m/s covers the blue whale in 3 seconds and the human adult in 170 milliseconds. Sound, at about 343 m/s in air, takes 87 milliseconds for the larger and 5 milliseconds for the smaller. A jet cruising at 900 km/h needs 120 milliseconds and 7 milliseconds.
These times assume a straight line and constant speed, which no real crossing has, but they turn a number in metres into something the body understands. At any fixed speed the travel times keep the same 17.6× ratio as the sizes.
The same figures in other units
The blue whale measures 29.9 m, which is 98.1 ft or 32.7 yards. The human adult measures 1.7 m, which is 5.58 ft.
The difference between them is 28.2 m (92.5 ft). In metres the smaller one is 1.7 against 29.9, so the 17.6× ratio holds in every unit; only the numbers on the ruler change.
Questions people ask about this pair
Which is bigger, the blue whale or the human adult?
The blue whale is bigger. At 29.9 m it is 17.6× the size of the human adult, which is 1.7 m.
How many times does the human adult fit along the blue whale?
17 whole times, with 1 m left over, using 1.7 m for each.
Are the two figures measured the same way?
No. The blue whale is a length (the longest reliably measured individual) and the human adult is a height (a round reference height), so read the comparison as overall extent.
How does the gap look in people?
Taking an adult of 1.7 m, the blue whale is about 18 people tall and the human adult is about 1. The gap of 28.2 m is 17 people.
Where do the numbers come from?
Each item has its own page that names the measurement and links to the Wikipedia article it was taken from. Some figures are rounded, and animals vary from one individual to the next, so treat them as representative values rather than records for every case.
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.