
The true size of a blue whale
Two buses, fourteen human heights and an orca that suddenly looks small.
Read the story →A visual encyclopedia of everything
Discover what things are, how big they are and how they compare.
A double-decker bus is a passenger vehicle with two levels, used for public transport.
A blue whale is a baleen whale that feeds by filtering small animals from seawater.
Both rulers start at the same zero and share one linear scale. Artwork keeps its original proportions.
A little perspective
A blue whale is about 2.27 times as long as a double-decker bus.
Length: 11 m; example.
An 11 m long, 12 tonne example. Model and passenger load vary.
Defined examples — our methodology
The marked length is calibrated. Unmeasured illustration details are representative.
Nose-to-tail length: 25 m; representative.
A chosen 25 m, 100 tonne adult blue whale (Balaenoptera musculus). Population, sex and age matter: this is a representative comparison specimen, not a record animal.
The marked nose-to-tail length is calibrated. Unmeasured illustration details are representative.
Side by side

Illustrative artwork · not to scale
Illustrative artwork · not to scale
Illustrative artwork · not to scale
Illustrative artwork · not to scaleThe scale of everything
Cross 61 orders of magnitude. Start with a bee and travel all the way to the edge of the observable universe.
Take the journey ↗
Pick a dimension
Same you. Different gravity.
Your mass stays the same. The pull of a different world changes everything.
Try it with your mass ↗
