Will-Shall | Commonly Confused Words

Will

/wɪl/

A word used to express future actions or decisions.

Thou hast willed it to be so, thyself.'All these wills are very confusing,' I said."You wont do any such thing," Mrs. Preble spoke up briskly.

/ʃəl/

Used to express future intention or obligation, especially in formal contexts

But, by then, we shall both be far away.'I shall never forget the kind way their hands explored me.We shall take the measure of this reflection.'

Will is the more common choice and is used in most situations.
Shall is often seen as more formal and can sometimes imply an obligation.
In American English, shall is rarely used outside of questions suggesting offers or suggestions.
British English uses shall more frequently than American English, especially in contracts or formal documents.
Both words are modal verbs and are followed by the base form of the main verb.