Stellar Parallax Distance Calculator
Calculate a star's distance in parsecs and light-years from its parallax angle.
arcseconds
Result
10 parsek
Distance: 10 parsecs
Result in all units
Step-by-step solution
d = 1 / p
What Is Parallax Distance?
The parallax method finds a star's distance from the angular shift seen when looking at it from the two ends of Earth's orbit. It is used for nearby stars.
How is it calculated?
How Is It Calculated?
Distance (parsecs) = 1 ÷ parallax angle (arcseconds)
- Enter the parallax angle.
1 arcsecond of parallax = 1 parsec ≈ 3.26 light-years.
Frequently Asked Questions
Why can't it be used for distant stars?
As distance increases, the parallax angle becomes too small to measure, so the method only works for nearby stars.