Parallax Distance Calculator
Compute distance (parsecs and light-years) from the annual parallax angle.
Input Data
Annual parallax angle in arcseconds.
Results
10
32.6156
Distance = 1/p = 10 pc (32.6156 ly).
At a glance:Parallax distance d(pc) = 1 / p, p in arcseconds. 1 parsec ≈ 3.26156 light-years.
Formula
d (pc) = 1 / p.
d (ly) = d(pc) × 3.26156.
How to Use
- Enter the parallax angle (arcsec).
- The tool returns distance in parsecs and light-years.
Case Studies
p = 0.1″ → 10 pc ≈ 32.6 ly
d = 1/0.1 = 10 pc; ×3.26156 ≈ 32.6 ly.
FAQ
Small p?
Farther objects have smaller parallax, harder to measure.
Limit?
Ground/space telescopes each have measurement limits.
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References
Content reviewed by the Calculatorism editorial team. Results are for reference only; please refer to the relevant authorities for the official figures.