Explanation
Means 'whether it is A or B'; 'regardless of A or B'.
Formation
Noun A + にしろ + Noun B + にしろ, or Verb-casual A + にしろ + Verb-casual B + にしろ
Detailed explanation
A にしろ B にしろ is used to indicate that even though A and B are different possibilities, the statement or conclusion applies regardless. Often translated as 'whether it’s A or B' or 'regardless of A or B'.
Examples
Atsui ni shiro samui ni shiro, mainichi undou suru beki desu.
Whether it's hot or cold, you should exercise every day.
Goukaku suru ni shiro fukougaku ni naru ni shiro, saizen o tsukushimashita.
Whether I pass or fail, I did my best.
Isogashii ni shiro hima ni shiro, jikan o taisetsu ni subeki desu.
Whether you're busy or free, you should value your time.
Ookii ni shiro chiisai ni shiro, sono hako wa zenbu koko ni hakonde kudasai.
Whether they're large or small, please move all those boxes here.
Practice
Grammar content sourced from hanabira.org.