Adaptor for US power socket for Indian plugs

[Sushubh]

Nephew going to US. He calls his chacha for help. Chacha has never gone to US. Hence clueless. Help?

 

[v1rus]

Search for a step down converter. 220/240V to 110V.

Though laptops and phones run across 100-240V, so that shouldn't be an issue.

In case it matters, I have used this (not exactly this but this is a generic adapter) several times and it has worked well for HP laptops I have carried and phone chargers (iPhone and Xiaomi) in US and UK