The absolute smallest rug I'd want in a readily available/common ready to go size is 9 x 12.

That is going to leave you with a foot of exposed hardwood on the long sides, and 5' of exposed wood each end on short sides.

If you want a more custom solution? Find a good broadloom store, not a big box.

There are a zillion beautiful broadloom selections in wool, and wool blends, and in nylon, or even polypropylene that can be created into area rugs, bound or serged. To the inch you desire. Why is that? Because the broadloom industry would be dead, otherwise. Nobody wants edge to edge carpet. The broadloom industry KNOWS that and survival means, as rooms got larger and the aforementioned fact regarding edge to edge, that to survive meant going far beyond builder basic. That's why.

Find one with a common 12' width, decide your perfect length, which for me would probably be 9 x 16 or 9 x 17, depending the dog crate: )

Here is one rug idea. Ralph Lauren

https://www.houzz.com/products/lauren-ralph-lauren-tamworth-check-rug-charcoal-9-x12-prvw-vr~140244671

Another approach is to use Flor tiles and layout a U-shaped rug around and under the edges of the bed.

Beverly to the rescue! Her chart make the rug-to-bed ratio very clear, and includes the nightstands.

I would definitely look at 10x14, 9x12 and even a bit bigger if the foot of the bed has a lot of walkway. In my bedroom I bought a 12 x 14 to extend the rug past the foot of the bed so more floor was covered.

More than one rug could become a tripping hazard, depending on the foot traffic from the bed to the master bathroom.

Polypropylene rugs are not crazy expensive, so if bigger will be better, add that size to your list. Also, you can put painter’s tape on the floor to map out what you want covered. That will give you a helpful visual.

Its math:) its always math

For instance:

my room is eleven feet deep. i dont need the rug UNDER my bedside tables. I dont want the rug cloer to entrance door than one foot.

Whats that? That means a rug that is 8.5 feet x however long . The only issue ? Most ready to go are 8x10 or 8x 11

Not long enough to feel proportional to the room- unless you like the look you have now :)

Would you ever do two matching rugs to either side of the bed instead of one large one mostly covered by bed ? Is that weird? Our rug currently is 9.6x 12.6.

Two rugs are more chances to trip in the dark. Go for a “big, gorgeous one” instead, if you need more floor coverage.

Don’t ignore large rugs being sold on Facebook Marketplace. Maybe it’s my area, but there are some really nice big ones being sold for great prices.

Consider getting rug 8x10 if more cost effective. You don't say why you like having a rug so I'm guessing it's for warmth on feet when getting out of bed. Here are King bed ideas -

9 x 12’ or 10 x 14’ is the norm for a king bed in a primary bedroom. We went with 10 x 14’ because of traffic patterns - a 9 x 12’ would have meant coming into the room with one foot on the carpet and one foot on the wood floor, and same with going into the en-suite bath. Hard to tell from the floor plan, but DO consider the traffic patterns - mainly to the bathroom in your case.

Thank you everyone

You could always get a broadloom cut to fit and serged or bound. I do that in many larger rooms where area rugs are needed. Most carpet stores will be able to help you. It’s usually a better look than multiple area rugs.