Grammar › Verb Tenses › Will vs Going to
Will vs Going to
Both talk about the future. Choose by how decided the action is:
- Will — instant decisions, promises, general predictions (I'll help you).
- Going to — plans decided before now, predictions from evidence (I'm going to travel; it's going to rain).
Decided at the moment of speaking → will. Decided earlier, or you can see it coming → going to.
The difference at a glance
| Will | Going to | |
|---|---|---|
| Decisions | now, on the spot | before now (a plan) |
| Predictions | general or opinion | based on evidence you can see |
| Promises & offers | yes — I’ll help | no |
| Example | I’ll answer it. | I’m going to call her later (planned). |
The key question: when was it decided? Decided as you speak → will. Decided earlier, or you can see it coming → going to.
Use will for…
- an instant decision: I’ll have the fish, please.
- a promise or offer: I’ll pay you back tomorrow.
- a general prediction: You’ll love Barcelona.
⚠️ Typical error:
I will visit my aunt this weekend(already planned) → For a plan made before now, use going to: I’m going to visit my aunt this weekend.
Use going to for…
- a plan or intention: We’re going to move house.
- a prediction from evidence: She’s going to have a baby.
⚠️ Typical error:
The phone’s ringing. I’m going to get it.→ For a decision made right now, use will: I’ll get it.
Common mistakes
1. Going to for instant decisions. A: I’m cold. B: I’m going to close the window. → I’ll close the window (you decided as you spoke).
2. Will for plans already made. I will study medicine — I’ve already enrolled. → I’m going to study medicine.
3. Present simple for predictions. It rains tomorrow → It will rain / It’s going to rain tomorrow. Pro tip: both futures beat the present simple for predictions.
✏️ Practice: Will vs Going to
1. Oh, the phone's ringing. — I ___ it.
2. We ___ paint the house next month — we've already bought the paint.
3. I think Spain ___ the match — they're the better team.
4. Careful! You ___ drop those plates!
5. Don't worry, I ___ tell anyone your secret.
6. A: It's cold in here. B: ___ close the window.
7. She ___ study law — she's already enrolled at university.
8. Look at the sky — it ___ snow soon.
9. Rewrite with the same meaning: 'I've already decided to sell my car.'
10. This bag looks really heavy. — ___ I carry it for you?
Frequently asked questions
What's the simplest rule?
If you decide as you speak, use will. If the decision was made before, or you can see the evidence now, use going to.
Are they ever interchangeable?
For general predictions, both are often fine: It will rain / It's going to rain. The difference is clearer with decisions and evidence.
Which one for promises?
Use will: I'll always love you. Going to is not normally used for promises.
Which for arrangements with other people?
Often the present continuous: I'm meeting them at six. Going to also works; will usually doesn't.
👩🏫 For teachers
CEFR objectives for “Will vs Going to”:
- Can choose will or going to according to decision time and evidence (CEFR B1).
- Can correct the typical errors of will-for-plans and going-to-for-instant-decisions.
- Can recognise contexts where both are acceptable.
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