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⊕
1 Earth diameter
The quantity is exact as entered.
12,740 kmLength
0 - shared origin
Earth
Earth is the rocky planet on which we live and the third planet from the Sun.
12,740 kmMean diameter
0 - shared origin
Both rulers start at the same zero and share one linear scale. Artwork keeps its original proportions. A ruler represents the selected distance or a measurement not visible in this view.
A little perspective
1 Earth diameter is approximately equal to the mean diameter of Earth.
Measurements, assumptions & sources +
1 Earth diameter
Length: 12,740 km; definition.
The quantity is exact as entered. Comparisons use the clearly stated specimen, model or nominal measurement.
Earth
Mean diameter: 12,740 km; approximate.
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?
Compare 1 Earth diameter with the mean diameter of Earth. The notes below explain how each value was chosen.
Earth
12,740 kmMean diameter · approximate
Mean-radius spherical model for Earth; actual shape is not perfectly spherical.
- Comparing
- Length ↔ Mean diameter
- Relative size
- 1 Earth diameter is approximately equal to the mean diameter of Earth.
How to read the visual
The diagram uses the recorded measurements. Details outside the marked spans do not set the scale.
- The mean diameter of Earth: This is an estimate; check the notes for its rounding and uncertainty.
This comparison follows the selected length only; other dimensions may differ.
12,742,000 mmetres
41,805,000 ftfeet
7,917.5 mimiles
8.5175 × 10⁻⁵ AUastronomical units
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