In English, there are various forms are used to refer to the future. ‘Will’ and ‘going to’ are the two most common forms used in English.

Will vs Going to | Rule 1
Connection to Present
- Will is used when there is no connection to the present.
- Going to is used when there is a connection to the present.
Will vs Going to | Rule 2
Future Facts
- Will is used with future facts or things we believe to be true.
- Going to is not used with future facts or things we believe to be true.
Will vs Going to | Rule 3
Plans and Decisions
- Will is used at the moment of taking a decision.
- Going to is used to talk about a planned activity.
Will vs Going to | Rule 4
Predictions
- Will is used to make a prediction in the far-off future.
- Going to is used to express a prediction based on evidence in the present.
Will vs Going to | Rule 5
Miscellaneous Uses
- Will is used to indicate promises, offers, requests or invitations.
- Going to is not used to indicate such things.
Examples
- I think it will be really hot tomorrow.
- It‘s going to be really hot tomorrow.
Also, Read

Use of Conjunctions

Prepositions Used in a Sentence

Prepositions of Place Worksheets
