# Calculation, radius of Saggriatus A* (SMBH) , Error in Wikipedia?

The parameter Schwarzschild Radius of Saggriatus A* is given in Wiki by 2.08×1015 (~0.2 ly)

However, when I do the calculation with 4.3Mio Ms I get a different result: 12.7x10^9

The table you are referring to shows the Schwarzschild radius for the whole Milky Way galaxy, not it's SMBH, Sagittarius A$^*$.
The total mass content of the galaxy is about $10^{12}\,M_\odot\sim10^{42}\,\rm kg$, leading to $$r=\frac{2GM}{c^2}\approx\frac{10^{-11}\times10^{42}}{\left(10^8\right)^2}=10^{15}\,\rm m$$
For Sag A$^*$, we can estimate it to be what you obtain: $$r=\frac{2GM}{c^2}\approx\frac{10^{-11}\times10^{36}}{\left(10^8\right)^2}=10^{9}\,\rm m$$