A phrase meaning 'if you think about it' or 'come to think of it,' used when you realize something upon reconsideration.
考えてみれば、あのとき彼の言ったことは正しかったかもしれない。
Come to think of it, what he said back then might have been right.
考えてみれば、道に迷ったのは地図を見なかったからだ。
If I think about it, I got lost because I didn't look at the map.
考えてみれば、もう夕食の材料は全部揃っているね。
Now that I think about it, we already have all the ingredients for dinner.