Are you studying simple future tenses in English and feeling confused by the differences? By studying these five common differences between "will" and “going to", you will be able to understand and use the correct simple future tense in most situations.

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First, let's remember how to conjugate "will" and "going to" in the simple future tense.

Will

I will (I'll)

You will (You'll)

He will (He'll)

She will (She'll)

It will (It'll)

We will (We'll)

You (plural) will (You'll)

They will (They'll)

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When to use "will"

  • Spontaneous ideas

  • Predictions and hopes

  • To say a sure fact about the future

  • To make promises, requests, refusals, offers, and threats

Going to

I am (I'm) going to

You are (You're) going to

He is (He's) going to

She is (She's) going to

It is (It's) going to

We are (We're) going to

You (plural) are (You're) going to

They are (They're) going to

Icon of a book with a lightbulb in the middle

When to use "going to"

  • A future event or arrangement that is planned before the time of speaking

  • To make a future prediction based on facts/evidence

  • A decision made before the time of speaking

  • To speak about something that is immediately about to happen

1. For Predictions

If you want to predict a future event, both "going to" and "will" can be used. It's a little different for each situation.

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For personal feelings where you don’t have evidence, use "will".

"I think it will rain this afternoon."

"I don't think Sara and John will get married."

Icon of a raincloud

If you have some facts or evidence, use "going to".

"I think it's going to rain this afternoon because the weather report said it could."

"I don't think Sara and John are going to get married because they said they don't want to pay for a wedding."

Icon of a married couple

Quiz

What is the right answer? I think it _______ be sunny this afternoon.

2. For Future Plans

For future plans, you can use both "will" and "going to" depending on the context.

Woman saying

For spontaneous plans made at the moment of speaking use "will".

Example:

"I haven't seen my grandparents in a while. I'll go visit them later today." (The plan is made at the moment of speaking.)

Icon of a pair of grandparents

For plans that are already planned and in the future use, "going to".

Examples:

"This summer, we're going to Italy."

"Next weekend, we're going to visit our grandparents." (The plan was made before speaking.)

Quiz

Which is correct? Tomorrow we _____ go to the park with our friends.

3. Decisions

You can use both "will" and "going to" for future decisions but we use them differently if you are making a decision in the moment or you already made a decision about the future.

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For decisions at the time of speaking, use "will".

Examples:

Mark: "We don't have any more eggs."

Julie: "Ok, I'll get some at the store tonight."

(Julie is deciding at the same moment she speaks that she will buy eggs tonight).

Icon of a basket of eggs

Sara: "Maria, the phone is ringing."

Maria: "Ok! I'll get it."

(Maria decides at that moment she will answer the phone.)

Icon of a ringing phone

Carol: "What are you having for dinner tonight?"

Laura: "Hmm, I'm not sure. I guess I'll have my leftover pasta for dinner tonight."

(Laura decides what she will eat in the moment she answers the question.)

Icon of a bowl of spaghetti

For decisions made before the time of speaking, use "going to".

Mark: "We don't have any more eggs."

Julie: "I already saw, I'm going to buy some at the store tomorrow."

(Julie decided before replying to Mark that she is going to buy eggs tomorrow.)

Icon of a basket of eggs

Sara: "Maria, the phone is ringing."

Maria: "I know, I'm going to get it."

(Maria decided before Sara spoke to her that she was going to answer the phone.)

Icon of a ringing phone

Carol: "What are you having for dinner tonight?"

Laura: "I'm going to make pasta for dinner."

(Laura already decided she is going to make pasta for dinner before Carol asks her, "What are you having for dinner tonight?")

Icon of a bowl of spaghetti

Quiz

What is correct? Mary: "Oh no, I forgot to buy flour!" John: "Don't worry, I ___ go get some from the store now!"

4. Future Facts

We can use both "going to" and "will" to talk about future facts as well.

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When talking about a certain fact about the future, use "will".

Examples:

"My sister will turn 48 on March 1st."

(Her birthday is the same day every year and it's a certain fact).

It will be 2026 in two years. (This is a known fact).

Icon of a birthday cake

When something is about to happen or in the very near future, use "going to."

Examples:

"Watch out! Your phone is going to fall off the table."

(The phone is about to fall in that moment).

"Run! The building is going to collapse."

(The speaker can see the building crumbling and can see it is going to fall immediately).

Icon of a broken house

Quiz

Which is correct? Tomorrow ______ be my parents wedding anniversary.

5. Offers, Promises, Requests, Refusals, and Threats

For offers, promises, requests, refusals, or threats, always use "will".

A cowboy saying,

Examples:

Offers

John: "I don't feel well today."

Mary: "Don't worry, I'll make you dinner and some hot tea."

Icon of a cup of tea

Promises

John: "Thanks for coming all the way to the hospital to see me."

Mary: " No problem. I promise I'll come visit you tomorrow, too."

Icon of a hospital

Requests

John: "Will you help me make breakfast?"

Mary: "Sure, no problem."

Icon of breakfast - toast, sausage, and a fried egg

Refusals

John: "Clean up the kitchen, please."

Mary: "No! I won't (will not) do it."

Icon of a kitchen

Threats:

"If you don't stop, I'll tell your father you're behaving badly."

Take Action

While this Byte doesn't cover every single use of "will" vs. "going to," you've learned the most important ones.

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Follow this checklist to keep learning more:

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