Common mistakes
In or inside: choosing the right word for a place
Sign in to saveYour keys can be in your bag, or they can be inside your bag. Both sentences place the keys in the bag, yet inside can make the boundary of the bag more noticeable.
Choose in for the usual location pattern and use inside when you want to refer to the inner part of a place or object.
Read and practice
Read the examples and try the written questions in this guide. Listening recordings are not available for this lesson yet.
Try the written questions
in and inside /ɪn ən ɪnˈsaɪd/
The short answer
Use in for the normal idea of being within a place, area, container, city, or country. Use inside for the inner part of a building or object, especially when the contrast with outside matters.
The children waited inside the hall while the rain passed.
Why it works: Inside tells us that they were in the building rather than outside it.
3 more examples
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The receipt is in the top drawer.
In gives the ordinary location of the receipt within the drawer.
Not this:The receipt is
inside the top drawer. What changes: This is also correct. Inside gives more attention to the drawer as an enclosed space. -
Everyone stayed in the café until the storm ended.
In is the usual way to give a person's location in a building or place of business.
Not this:Everyone stayed
inside the caféuntil the storm ended. What changes: This is correct when being indoors, rather than outside, is part of the message. -
My cousin lives in Canada.
Use in with countries, cities, and other larger areas.
Not this:My cousin lives
inside Canada. What changes: This sounds unusual in normal conversation. In is the standard choice for a country or city.
Read the full guide
For many physical places, in and inside are both possible: The tools are in the drawer and The tools are inside the drawer. Start with in unless you need to draw attention to the interior or use inside without a following noun.
Start with the ordinary location
Use in when someone or something is within a place. It is the normal choice for rooms, containers, towns, countries, and large areas.
There is a note in the envelope.
The note is within the envelope. The sentence does not need to stress the envelope's boundary.
Use inside for the inner part
Inside also describes a position within something, but it directs attention to the interior. It is useful when outside is an important contrast.
Keep the plants inside the house during the frost.
The contrast is clear: the plants should be indoors, not outside in the frost.
The weather is wet. Which word can you use without repeating the word house?
Use inside: Come inside. The listener already knows the relevant building or shelter.
Notice the grammar pattern
Both words can be prepositions before a noun: in the box and inside the box. Inside can also be an adverb without a noun. In can appear without a noun in phrases such as come in, but that is a different established pattern.
The dog is inside.
The dog is inside the shed.
The first sentence uses inside alone. The second uses it before the noun shed.
Keep in for common non-physical meanings
In appears in many expressions that do not describe the inside of a physical object. Use in for dates, periods, languages, groups, and states.
Our course begins in October.
She answered the question in English.
Inside October and inside English are not normal English expressions.
Which word completes this sentence: I will call you in ten minutes?
Use in. The phrase refers to time, so it does not mean the interior of a thing.
Choose the word that fits the message
Ask whether you only need to locate something within a place, or whether you want to contrast the interior with the outside. Use in for the first job. Use inside when the second meaning helps the reader or listener.
I left my phone in the car.
I left my phone inside the car makes the car's interior more noticeable, perhaps because someone is looking outside the car.
Before you go
Remember this
Use in for the usual location pattern and for places, times, groups, and larger areas. Use inside for the inner part of a building or object, or by itself when the place is already known. When both are possible, inside usually makes the boundary more noticeable.
Practice with the written examples
You can practice with the written questions in the Learn tab. Each answer includes an explanation.
Try the written questionsListening test not available yet
This lesson does not have the recordings needed for a listening test. Use the written questions in the guide to check your understanding.
Try the written questionsQuestions about "In or inside: choosing the right word for a place"
What is the difference between in and inside?
Both can describe something within a place or container. In is the usual general choice. Inside puts more attention on the inner part of a building, room, or object.
The receipt is in the top drawer.
Can I say in the box and inside the box?
Yes. Both phrases are correct for an object within a box. Inside the box is useful when the box's interior or the contrast with the outside matters in the situation.
The receipt is inside the top drawer.
Can inside be used without a noun?
Yes. Inside can be an adverb when the place is already known. For example, if people are standing outdoors, you can say Come inside without naming the house or building again.
Everyone stayed in the café until the storm ended.
Why do we say in July instead of inside July?
In is used in many time expressions, including in July, in the morning, and in ten minutes. Inside usually refers to an inner physical area, so it does not fit ordinary time phrases.
Everyone stayed inside the café until the storm ended.
Is inside better than in for countries and cities?
No. Use in for normal statements about a city or country, such as She lives in Kenya. Inside a country is possible only when its boundary is being discussed in a special context.
My cousin lives in Canada.