What it means
に越したことはない means that a particular option is the safest, most desirable, or otherwise preferable choice. It is often translated as “Nothing is better than” or “It is best to.” It presents the idea as a strong recommendation rather than an absolute requirement. It can follow a verb in the dictionary or negative form, a noun, an i-adjective, or a na-adjective stem. The polite counterpart ends in ありません.
Usage note
This expression is somewhat formal and is common in advice, explanations, and careful written or spoken language. Do not confuse it with a simple statement that something is better than another option; it emphasizes that no better choice exists in the situation.
How to use it
相談相手は専門家に越したことはありません。
For a person to consult, there is nothing better than a specialist.
通勤先は便利に越したことはありません。
For a workplace, there is nothing better than it being convenient.
会議は短いに越したことはありません。
As for meetings, there is nothing better than them being short.
早く出発するに越したことはありません。
There is nothing better than leaving early.
無理をしないに越したことはありません。
There is nothing better than avoiding overexertion.
相談相手は専門家に越したことはない。
For a person to consult, there is nothing better than a specialist.
通勤先は便利に越したことはない。
For a workplace, there is nothing better than it being convenient.
会議は短いに越したことはない。
As for meetings, there is nothing better than them being short.
早く出発するに越したことはない。
There is nothing better than leaving early.
無理をしないに越したことはない。
There is nothing better than avoiding overexertion.