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Astronomy Calculators
Free online astronomy calculators for planetary weight, distance conversion, and escape velocity.
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Planetary Weight
Calculate your weight on different planets and moons.
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Light Year Converter
Convert between light years, parsecs, and AU.
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Escape Velocity
Calculate escape velocity for celestial bodies.
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Planetary Weight Calculator
Calculate your weight on different planets, moons, and celestial bodies
Your Weight on Earth
686.47 N (70 kg)
Mass is constant. Weight changes with gravity.
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Mercury
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♀️
Venus
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♂️
Mars
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♃
Jupiter
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Saturn
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⛢
Uranus
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♆
Neptune
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Moon
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Light Year Converter
Convert between light years, parsecs, astronomical units, and kilometers
Light Years
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Parsecs
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AU
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km
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Miles
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1 ly = 63,241 AU = 0.3066 pc = 9.46 × 10¹² km
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Escape Velocity Calculator
Calculate escape velocity for planets, moons, and any celestial body
Escape Velocity
11.19 km/s
v = √(2GM/r) = 11.19 km/s
km/s
11.19
m/s
11186
km/h
40270
Surface Gravity
9.81 m/s²