English — will vs going to
Both will and going to talk about the future, but they are not interchangeable. Use will for decisions made at the moment of speaking, offers, and predictions based on opinion; use going to for intentions decided beforehand and predictions based on present evidence.
How it works
Choose the form by the speaker's mindset, not the timing. Deciding as you speak takes will: "The phone's ringing — I'll get it." A plan you already had takes going to: "We're going to move house next year." For predictions, will signals opinion ("I think it'll be fine"), while going to signals visible evidence ("Look at those clouds — it's going to rain").
Examples
| Meaning | Form | Example |
|---|---|---|
| Spontaneous decision | will | The phone's ringing — I'll get it. |
| Offer / promise | will | Don't worry, I'll help you with the bags. |
| Prediction (opinion) | will | I think United will win the match. |
| Prior intention / plan | going to | We're going to visit Rome this summer. |
| Prediction (evidence) | going to | Look at those clouds — it's going to rain. |
Good to know
A common mistake is using will for a plan you already had: not "I will meet my friends tonight, we arranged it yesterday" but "I'm going to meet my friends tonight." In speech, will is usually contracted to 'll, and after a plan is stated with going to, learners often keep repeating it — you can switch to will for the details you decide on the spot.