I will explain it to him/her
I'll explain it to you now.
— La ironía del destino, o goce de su baño (1976)
I'll explain everything to you.
I'll explain it to her.
I’ll explain it to him/her later.
Se lo explicaré mediante un ejemplo.
I will explain it to you with an example.
— R.A.F. Facción del ejército rojo (2008)
Pues lo va a pensar en mi oficina y se lo explicaré en privado.
Well, he'll think about it in my office and I'll explain it to him privately.
— Mañana empieza todo (2016)
I'll explain it to you.
I'll explain it to him.