General term for physical size, magnitude, or extent of an object, space, or abstract concept.
この箱の大きさはどれくらいですか。
What is the size of this box?
部屋の大きさを測ってください。
Please measure the dimensions of the room.
問題の大きさに気づいていなかった。
I hadn't realized the magnitude of the problem.
Please measure the size of this box.
Even though they're the same variety, the apples differ in size.
These two pictures are the same size.
I adjusted the text to match the size of the screen.
I compared the sizes of the two stones.