どれだけ

Composed of どれ (which one) + だけ (only, as much as). Asks about the degree or extent of something.

Common patterns

• どれだけ〜ても: no matter how much ~
• どれだけ〜か分(わ)からない: don't know how much ~
• どれだけ〜か: how much ~ (rhetorical, emphasizing a great amount)
• どれだけの + noun: how much/many of ~

Similar words

• どのくらい: how much/how long — more neutral and common in everyday speech
• いくら: how much — focuses on price or degree; often used with 〜ても pattern
• どんなに: how (much) — more emphatic, often used with 〜ても for concessive meaning

Usage

When used as a question, どれだけ asks about quantity or degree. When used rhetorically (sense 2), it emphasizes that the amount or degree was so great it is hard to express. The rhetorical use is common in emotional speech.