イディオム

a ballpark figure

正確な数字ではないが、大まかな目安となる概算。

一般中級一般的

businesscommonintermediate

Meaning

A rough estimate that is close enough for general planning, but not exact.

Origin

From baseball: a ballpark is the general area in which a ball is played. The expression developed figuratively to mean an approximate range.

Examples

Can you give me a ballpark figure for the repair costs?

修理費のおおよその見積もりを教えてもらえますか。

We do not need an exact total yet; a ballpark figure will do.

まだ正確な合計は必要ありません。概算で十分です。

The contractor gave us a ballpark figure of around $20,000.

請負業者は約2万ドルという概算を提示した。

Based on last year's sales, my ballpark figure is about 500 units.

昨年の売上に基づくと、私の概算は約500個です。

I cannot provide a precise date, but late September is a ballpark figure.

正確な日付は出せませんが、9月下旬がおおよその目安です。

Notes (Japanese)

日常会話やビジネスでよく使われる、くだけすぎない表現。正確な数値ではなく、おおよその見当を示す。

Notes (English)

Common, informal-to-neutral business and everyday expression. It emphasizes approximation rather than precision.

Grammar & Usage Notes (Japanese)

通常は "a ballpark figure" の形で使う。費用・数量などについて "a ballpark figure for ..."、数値を伴って "a ballpark figure of/around/about ..." と言うことが多い。

Grammar & Usage Notes (English)

Usually used with the indefinite article: "a ballpark figure." Often followed by "for" + a cost/quantity, or "of/around/about" + a number. It can also be used predicatively: "That is in the ballpark."

補足（日本語）