How do you spell welcome home in Greek using English letters?

There isn't one single perfect translation as the best way to say "Welcome home" in Greek depends on the nuance you want to convey. However, here are a few options using English letters, with slight differences in meaning:

* Καλώς ήρθες σπίτι (Kalos irthes spiti): This is a common and versatile option. It literally translates to "Well you came home," and is suitable for one person.

* Καλώς ήρθατε σπίτι (Kalos irthate spiti): This is the plural form, meaning "Well you came home" and is used when welcoming multiple people.

* Καλώς ήλθατε στο σπίτι (Kalos ilthate sto spiti): This is a more formal version of the plural, using the preposition "sto" (to, in).

The best choice depends on your context and audience. For most situations, Kalos irthes spiti (singular) or Kalos irthate spiti (plural) will be perfectly fine.