In French, what is the correct spelling: j'aimerais or j'aimerai ?

In French, « j'aimerai(s) » is pronounced the same way in the simple future and present conditional tenses:

• in the simple future tense: j'aimerai (I will like ⮕ actual or certain future action)
• in the present conditional: j'aimerais (I would like ⮕ expresses a wish or a possibility)

To know the tense of the verb, you just have to conjugate it in the first person plural (nous):

J'aimerais un café. ⮕ Nous aimerions un café. ⮕ Present conditional

J'aimerai toujours le café. ⮕ Nous aimerons toujours le café. ⮕ Simple future tense

I would like a coffee. ⮕ We would like a coffee. ⮕ Present conditional

I will always like coffee. ⮕ We will always like coffee. ⮕ Simple future tense

Here are some examples:

J'aimerais avoir plus d'argent. <=> I wish I had more money.

J'aimerais le recevoir pour Noël. <=> I would like to receive it for Christmas.

J'aimerais que vous m'envoyiez les documents par e-mail. <=> I wish you would email me the documents.

J'aimerai mes enfants toute ma vie. <=> I will love my children all my life.

J’aimerai ta famille comme la mienne. <=> I will love your family as my own.