Three times as much; triple — indicating a quantity or rate that is threefold compared with a reference.
今年は売り上げが去年の三倍になった。
This year sales became three times what they were last year.
この薬は通常量の三倍を投与してはならない。
You must not administer three times the usual dose of this medicine.
ポイントが三倍付与されるキャンペーンに参加した。
I joined a campaign where points were awarded threefold.