1 megaparsec
1 MpcLength · definition
The quantity is exact as entered. Comparisons use the clearly stated specimen, model or nominal measurement.
Length & distance
Just how long is 1 megaparsec?
Deep space
1 Mpc
1 megaparsec
The quantity is exact as entered.
1 MpcLength
0 - shared origin
Distance to Andromeda
This is the distance between the Milky Way and the Andromeda galaxy, our nearest large galactic neighbour.
766.5 kpcDistance
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 megaparsec is about 1.3 times the distance to Andromeda.
Measurements, assumptions & sources +
1 megaparsec
Length: 1 Mpc; definition.
The quantity is exact as entered. Comparisons use the clearly stated specimen, model or nominal measurement.
Distance to Andromeda
Distance: 766.5 kpc; approximate.
Approximate distance to our large galactic neighbour. This measures separation, not the galaxy’s diameter.
The marked distance is calibrated. Unmeasured illustration details are representative.
Measurement details
Why these numbers?
Compare 1 megaparsec with the distance to Andromeda. The notes below explain how each value was chosen.
Distance to Andromeda
766.5 kpcDistance · approximate
Approximate distance to our large galactic neighbour. This measures separation, not the galaxy’s diameter.
- Comparing
- Length ↔ Distance
- Relative size
- 1 megaparsec is about 1.3 times the distance to Andromeda. 1 megaparsec is approximately 30.5% greater than the distance to Andromeda.
How to read the visual
The diagram uses the recorded measurements. Details outside the marked spans do not set the scale.
- The distance to Andromeda: This is an estimate; check the notes for its rounding and uncertainty.
This comparison follows the selected length only; other dimensions may differ.
3.0857 × 10²² mmetres
1.0124 × 10²³ ftfeet
1.9174 × 10¹⁹ mimiles
2.0626 × 10¹¹ AUastronomical units
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