1 gigaparsec
1 GpcLength · definition
The quantity is exact as entered. Comparisons use the clearly stated specimen, model or nominal measurement.
Length & distance
Just how long is 1 gigaparsec?
Deep space
1 Gpc
3.0857 × 10²⁵ mmetres
1.0124 × 10²⁶ ftfeet
1.9174 × 10²² mimiles
2.0626 × 10¹⁴ AUastronomical units
01
1 gigaparsec1 GpcLength · definition
02
Laniakea-scale region159.4 MpcDiameter · rounded reference
Both marked spans share one linear scale. Artwork keeps its proportions; poses and surface detail are illustrative.
A little perspective
The length of 1 gigaparsec is about 6.27 times the diameter of Laniakea-scale region.
Measurements, assumptions & sources +
1 gigaparsec
The quantity is exact as entered. Comparisons use the clearly stated specimen, model or nominal measurement.
Laniakea-scale region
An illustrative 520 million light-year span for a large-scale galaxy-flow region; boundaries depend on the model.
Defined examples — our methodology
The marked diameter is calibrated. Unmeasured illustration details are representative.
Measurement details
Why these numbers?
The visual compares length with diameter. The records below preserve each value’s basis and caveats.
Laniakea-scale region
159.4 MpcDiameter · rounded reference
An illustrative 520 million light-year span for a large-scale galaxy-flow region; boundaries depend on the model.
- Comparing
- Length ↔ Diameter
- Relative size
- 1 gigaparsec is larger on this measurement by a factor of about 6.27. 1 gigaparsec's selected measurement is approximately 527% greater than Laniakea-scale region's.
How to read the visual
The labelled spans and stored measurements determine the scale; unmeasured illustration details do not.
- Laniakea-scale region is labelled rounded reference; 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.