Astronomy Converter

Free online astronomy converter. Convert between different units of astronomy instantly and accurately.

Astronomy Units

• Meter (m) — the base unit
• Kilometer (km) — 1 km = 1,000 m
• Astronomical Unit (AU) — 1 AU = 149,597,870,700 m
• Light Year (ly) — 1 ly = 9.46073e+15 m
• Parsec (pc) — 1 pc = 3.085678e+16 m
• Kiloparsec (kpc) — 1 kpc = 3.085678e+19 m
• Megaparsec (Mpc) — 1 Mpc = 3.085678e+22 m
• Light Second (ls) — 1 ls = 299,792,458 m
• Light Minute (lm) — 1 lm = 17,987,547,480 m
• Light Hour (lh) — 1 lh = 1,079,252,848,800 m
• Light Day (ld) — 1 ld = 25,902,068,371,200 m
• Solar Radius (R☉) — 1 R☉ = 695,700,000 m
• Earth Radius (R⊕) — 1 R⊕ = 6,371,000 m
• Lunar Distance (LD) — 1 LD = 384,402,000 m
• Solar Mass (M☉) — 1 M☉ = 1.9891e+30 m
• Earth Mass (M⊕) — 1 M⊕ = 5.9722e+24 m
• Jupiter Mass (MJ) — 1 MJ = 1.8982e+27 m
• Lunar Mass (ML) — 1 ML = 7.342e+22 m

Common Astronomy Conversions

• Astronomical Unit to Light Year
• Parsec to Light Year

Astronomy Conversion Guides

• AU to Light Years: Measuring the Immense Scale of the Universe
• Parsecs to Light Years: Measuring the Deepest Reaches of Space

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