1 Earth diameter
12,740 kmLength · definition
The quantity is exact as entered. Comparisons use the clearly stated specimen, model or nominal measurement.
Length & distance
Just how long is 1 Earth diameter?
Our planet
1 D⊕
12,742,000 mmetres
41,805,000 ftfeet
7,917.5 mimiles
8.5175 × 10⁻⁵ AUastronomical units
01
1 Earth diameter12,740 kmLength · definition
02
Earth12,740 kmMean diameter · approximate
Both marked spans share one linear scale. Artwork keeps its proportions; poses and surface detail are illustrative.
A little perspective
The length of 1 Earth diameter and the mean diameter of Earth are approximately the same.
Measurements, assumptions & sources +
1 Earth diameter
The quantity is exact as entered. Comparisons use the clearly stated specimen, model or nominal measurement.
Earth
Mean-radius spherical model for Earth; actual shape is not perfectly spherical.
NASA JPL — planetary physical parameters
The marked mean diameter is calibrated. Unmeasured illustration details are representative.
Measurement details
Why these numbers?
The visual compares length with mean diameter. The records below preserve each value’s basis and caveats.
Earth
12,740 kmMean diameter · approximate
Mean-radius spherical model for Earth; actual shape is not perfectly spherical.
- Comparing
- Length ↔ Mean diameter
- Relative size
- The two selected measurements are approximately equal.
How to read the visual
The labelled spans and stored measurements determine the scale; unmeasured illustration details do not.
- Earth is labelled approximate; treat the displayed value as a comparison anchor rather than false precision.
Change your perspective
Put it next to…
Choose a suggestion to redraw the comparison, or open its page to learn what it is.
A little smaller. A little larger.