They both generally mean the same thing. The subtle difference is that "going to" is used to imply that the action is definite or certain but "will" implies less certainty. It depends on the context of the situation. For example: I will go to the store. -- implies that maybe at some point in the future you will go to the store, or maybe you'll go this afternoon. But its not certain. I am going to the store. -- implies that you're definitely going to the store. It could be now or in the future but the action is happening and is certain. Examples with more context: Maybe after work I will go to the store. (This is correct and is uncertain) Maybe after work I am going to the store. (This is incorrect because 'maybe' implies uncertainty but 'going to' implies that the action will definitely happen) After work, I am going to the store. (This is correct and is certain) I hope this helps! Let me know if you have questions! :)

People often use be going to or the present continous to talk about future plans. I am going to swim tomorrow. I am picking him up at the airport tomorrow. I think of 'will' as a little more formal way to create the future, whereas 'be going to' is more conversational. "Shall" is extremely formal and is rarely used (at least in the United States).

Hey Maialen4! I just wanted to add that "Will" is usually preceeded by the verbs "think", "promise", "guess", "believe", "suppose", "assume" and others like that, in order to form the future tense.

Hey Maialen4, I shall provide you an explanation over the difference among these future tenses: 1) Going to = the construction of ''going to + verb...'' is used to indicate an upcoming event that has already been planned or is about to happen. E.g.: ''I'm going to start planting now.'' E.g.: ''Do you think it is going to rain?'' 2) Present Continuous = This future form is used to talk about something you have already decided to do, or to talk about an event that is 100% sure to happen. The usage of the present continuous form expresses more conviction when compared to the ''going to'' form. E.g.: ''I'm attending a lecture on Monday at 8:00 a.m.'' E.g.: ''I'm going out with my friends tomorrow afternoon.'' E.g.: ''I'm not going back home.'' 3) Will / Shall = ''Shall'' and ''will'' are used to make statements and ask questions about the future. The construction of ''will + verb...'' is more commonly said and is used to express a future idea that you have just had, or even to indicate an action you took at the moment. E.g.: ''I will listen to that song later.'' E.g.: ''He will come back.'' E.g.: ''I shall provide for this family.'' E.g.: ''We shall pray to God, for we have sinned.'' ***NOTICE: ''Shall'' is commonly used (followed by the expression ''be able to'') to talk about ability in the future. E.g.: ''I shall be able to answer that question tomorrow.'' E.g.: ''I shall be able to solve such a trifling matter.'' Hope that helps!!!