Quantity; amount; volume or portion — the measure of how much of something there is.
料理の量が多すぎて食べきれなかった。
The portion was too large and I couldn't finish it.
データの量が増えたので、保存方法を見直す必要がある。
The amount of data increased, so we need to review the storage method.
この容器の容量は量で一リットルです。
The capacity of this container is one liter by volume.
薬の量は医師の指示に従ってください。
Please follow the doctor's instructions for the dosage.
Generosity; magnanimity or tolerance (an older/literary sense referring to the breadth of one's character).
量の大きい人物は些細なことにこだわらない。
A person of great magnanimity does not fuss over trivial matters.
In Indian philosophy, a technical term (pramāṇa) meaning a means by which one obtains accurate and valid knowledge.
仏教学の文献では、量（プラマーナ）について詳しく論じられている。
In Buddhist writings, pramāṇa (means of knowledge) is discussed in detail.