A phrase meaning 'in doing anything' or 'no matter what one does' — used to indicate that something applies in all situations or actions.
何をするにも準備が大切だ。
Preparation is important no matter what you do.
何をするにも時間がかかる年齢になってきた。
I've reached an age where everything takes time.
子どもは何をするにも親の手伝いが必要だ。
Children need their parents' help for everything they do.
何をするにもまず安全確認をしてください。
Before doing anything, please check for safety first.