A colloquial expression meaning that things will work out or be managed somehow despite difficulties; often used to reassure or express confidence.
明日までにレポートを終わらせないといけないけど、なんとかなるよ。
I have to finish the report by tomorrow, but it'll work out somehow.
大丈夫、心配しすぎないで。なんとかなるから。
It's okay — don't worry too much. It'll be fine.
資金が足りないけど、銀行から融資を受けられればなんとかなるはずだ。
We don't have enough funds, but if we can get a loan from the bank, we should manage somehow.
失敗しても経験になるし、なんとかなるさ。
Even if you fail, it's experience — things will work out.