YOU SAID:

I felt tired from having worked for hours.

INTO JAPANESE

何時間も働いて疲れを感じた.

BACK INTO ENGLISH

I felt tired after working for hours.

INTO JAPANESE

何時間も働いた後、私は疲れを感じました。

BACK INTO ENGLISH

After working for hours, I felt tired.

INTO JAPANESE

何時間も働いた後、私は疲れを感じました。

BACK INTO ENGLISH

After working for hours, I felt tired.