// multi-utility computation suite · offline · instant · precise
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│ computation suite │
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sci.Schwarzschild-radius-black-hole Calculator
Calculates the Schwarzschild radius r_s = 2GM/c² below which an object becomes a black hole — the event horizon for a non-rotating black hole. r_s for the Sun = 2.95 km; for Earth = 8.9 mm — a black hole of 1 solar mass has a surface gravity 2 × 10¹¹ times Earth's.
Inputs
M Solar
Total mass (kg). Distinct from weight — weight = mass × gravity. Mass is constant; weight varies with location.
Results
Schwarzschild radius Rs (km)
The computed radius -- half the diameter.
Schwarzschild radius (m)
The computed radius -- half the diameter.
light-crossing time (μs)
The computed duration or time value.
Rs = 2GM/c²
Reference formula or conversion factor shown for context.