YOU SAID:

I am getting a haircut tomorrow

INTO JAPANESE

私は明日散髪を受ける

BACK INTO ENGLISH

I'll get a haircut tomorrow.

INTO JAPANESE

明日は散髪してもらいます。

BACK INTO ENGLISH

I'm going to have my haircuts tomorrow.

INTO JAPANESE

明日は散髪する予定です。

BACK INTO ENGLISH

I'm going to have a haircut tomorrow.

INTO JAPANESE

明日は散髪するつもりです。

BACK INTO ENGLISH

I'm going to have a haircut tomorrow.