Meaning of "K" in "4K"

We recently came to use the word "4K" or "8K" as an resolution indicator.

If we use the word "4K," it probably means the resolution of 3820x2160, and this is comparable to four times the Full HD resolution(1980x1080).

Therefore I thought "4" of "4K" means "4 times."

However, the meaning of "K" was "kilo."

That is, "4K" represents that the width of the resolution is around 4000 pixels.

「4K」の「K」の意味

私たちは最近、解像度を表す指標として「4K」や「8K」などを使うようになってきました。

「4K」と言えば通常、3820x2160 の解像度を表しており、これはフルHD（1980x1080）の4倍の解像度となります。

そのため、私は「4K」の「4」は、4倍という意味だと思っていました。

しかし、「K」の意味を調べると、それは「キロ」でした。

すなわち、「4K」は横の解像度が約4000だということことを表しています。

• We recently came to use the word "4K" or "8K" as an resolution indicator.
• This sentence is perfect! No correction needed!

• If we use the word "4K," it probably means the resolution of 3820x2160, and this is comparable to four times the Full HD resolution(1980x1080).
• This sentence is perfect! No correction needed!

• Therefore I thought "4" of "4K" means "4 times."
• Therefore, I thought "4" of "4K" means "4 times."

  A comma after "Therefore"

• However, the meaning of "K" was "kilo."
• This sentence is perfect! No correction needed!

• That is, "4K" represents that the width of the resolution is around 4000 pixels.
• That is, "4K" represents means that the width of the resolution is around 4000 pixels.

  Although "represents" is not wrong, using the word "means" sounds more natural to me.

• Meaning of "K" in "4K"
• This sentence is perfect! No correction needed!

• We recently came to use the word "4K" or "8K" as an resolution indicator.
• We recently came to use starting using the word "4K" or "8K" as an resolution indicator.

• If we use the word "4K," it probably means the resolution of 3820x2160, and this is comparable to four times the Full HD resolution(1980x1080).
• If we use the word "4K,", it probably means the item has a resolution of 3820x2160. This is comparable to four times a Full HD resolution(1980x1080).

• However, the meaning of "K" was "kilo."
• However, the meaning of "K" is also "kilo." OR "I also know that "K" also stands for "kilo".

• That is, "4K" represents that the width of the resolution is around 4000 pixels.
• Meaning that "4K" represents the width of resolution, which is around 4,000 pixels.

Wow you are talking about some complicated things! Good luck!