Black Hole Feats

Black Holes are points in spacewhere the warping of gravity becomes so intense that light can not escape it. Black Hole feats abound in fiction, even though they very rarely make sense. This is a general primer on how I think is a good way to interpret them.

The big problem with black hole feats in general is that the singularity of a black hole is infinitely dense meaning that any character with finite durability would get instantly destroyed upon reaching it which....is not what happens.

However the event horizon part of a black hole is easier to understand, it's the part of the black hole past where light can not escape from. Because all the mass is being highly compressed a black hole is a lot smaller the amount of mass it contains would lead you to believe.

Creating, Destroying or Surviving a Black Hole doesn't really work with physics but because fictional verses rarely do follow physics, this is just going to be a simply list of how much mass a black hole would have to have to potentially apply for any feat involving them. Standard Versus Axioms apply here, that creating a celestial body or moving it faster then light scales to it's mass. 

It should be noted that a black hole COULD be even more dense and thus these mass numbers are minimums. If a black hole is sucking in some astronomical body or making it orbit, the black hole can obviously scale to that.

Skyscraper-Mass: ~6e-16 Meters in Diameter (Size of a Proton) (Calculator literally wouldn't go lower)

Heaviest Mountains-Mass: ~2.97e-9 Meters in Diameter (Smallest microprocessors, DNA size)

Pluto-Mass: 0.000038614 Meters in Diameter (Cellular Size)

Moon-Mass: 0.00021684 Meters in Diameter (Tip of a Pencil)

Ganymede (Largest Solar System Moon)-Mass: 0.00044556 Meters in Diameter (Smaller then a grain of sand, sugar, or salt)

Mercury Mass: 0.0009802 Meters in Diameter (Size of a Pinhead)

Mars-Mass: 0.001901 Meters in Diameter (Size of a Flea)

Venus-Mass: 0.014554 Meters in Diameter (Mosquito Size)

Earth-Mass: 0.01782 Meters in Diameter (About the length of the smallest salamander, less then the length then the width of a human finger)

Uranus-Mass: 0.25854 Meters in Diameter (About the size of a sports ball)

Neptune-Mass: 0.29704 Meters in Diameter (About the size of a school ruler)

Saturn-Mass: 1.6932 Meters in Diameter (About Size of Railway Track or an Adult Male)

Jupiter-Mass: 5.644 Meters in Diameter (A bit bigger than an Elephant or a Giraffe)

Dwarf Star-Mass: 59.408 Meters in Diameter (Basically Large Building Size)

Bernard’s Star (Red Dwarf Star)-Mass: 891.1 Meters in Diameter (High End Multi-City Block Level Size)

Sun-Mass: 5,940.8 Meters in Diameter (Basically Town Size)

Betelgeuse (Red Supergiant Star)-Mass: 118,814 Meters in Diameter (Island/Inter-City Size)

Hyades Star Cluster-Mass: 2,363,224 Meters in Diameter (Pluto Size, Country Size)

Pleiades Star Cluster-Mass: 4,726,446 Meters in Diameter (Mercury Size, Near Continent Size)

Segue 2 (Smallest Galaxy Known)-Mass: ~5,900,000 Meters in Diameter (Continent Size)

Dwarf Galaxies in General-Mass: ~5,900,000,000 Meters in Diameter (Large Star Size)

Supermassive Center of Galaxy Black Holes: ~9,000,000,000 Meters

Milky Way-Mass: ~356 Trillion Meters (~25 Solar Systems in Diameter)

Local Group of Galaxies-Mass: ~8.9 Quadrillion Meters (Almost 1 Light-Year Across)

Local Supercluster of Galaxies-Mass: ~5.9 Quintillion Meters (Largest known Nebulas)

Pisces-Cetus Supercluster Complex-Mass: ~5.9 Sextillion Meters (Galactic Size)

Observable Universe-Mass: ~178 Septillion Meters (Size of Biggest Structures in the Universe)

And for the reverse, some hypothetical black hole sizes and the corresponding masses they would have to have

Human (1.7 meters) Sized: 572 Septillion Kilograms (Almost Exactly the Mass of Saturn)

City-Sized (10 Kilometers): ~3.37e30 Kilograms which is more then the Sun (2e30 Kilograms)

Moon-Sized: ~2.34e33 Kilograms which is ~1,170 solar masses (Multi-Stellar to Low Galactic)

Earth-Sized: ~8.58e33 Kilograms which is ~4,290 solar masses (Multi-Stellar to Low Galactic)

Sun-Sized: ~9.36e36 Kilograms which is ~4,707,225 solar masses (Low Galactic)

Galaxy Sized: ~6.6886e47 Kilograms which is the mass of a galactic supercluster

Conclusions:

Even Relatively Small Black Holes are going to be at least planetary

Black Holes that are a few meters wide, the range of humans and large animals, are going to be large planetary

Town to City-Sized Black Holes are Star Level

Things between the above two are going to be in the low stellar level

Black Holes the Sizes of Celestial Bodies are generally in the Multi-Stellar to Low Galactic Range

Black Holes a substantial size of a galaxy are Galaxy to Multi-Galaxy Level