Will is commonly used for future decisions, predictions and promises.
- I will call you tomorrow.
- It will be fine.
- We will help you.
Would is often used for hypothetical situations, polite requests and reported speech.
- I would travel more if I had the money.
- Would you like some tea?
- She said she would call.
Easy guide
Will = future, intention or certainty.
Would = hypothetical, polite or reported situations.