I'll
n.n. a short way of saying 'I will' or 'I shall'. You use it when you promise to do something or talk about your future plans.
n. a contraction of the first-person singular pronoun 'I' and the auxiliary verb 'will' or 'shall'. Used to express future intent, promises, or spontaneous decisions.
I'll call you as soon as I arrive at the station.
If you are busy with the cooking, I'll set the table and pour the drinks for everyone.
I'll be the first to admit that the initial results were disappointing, but I'll continue to refine the methodology until we achieve the desired outcome.
Contraction of I will/shall.
Always written with an apostrophe to indicate the missing letters; used primarily in speech and informal or semi-formal writing.
I'll will goI'll goThe contraction 'I'll' already includes the word 'will' — adding it again is redundant.