Describing size is an important part of learning Japanese and speaking naturally in everyday conversation. Words like “big,” “small,” “huge,” or “tiny” are used constantly when talking about buildings, animals, food, objects, and even ideas.
In Japanese, several different words can describe size depending on the context. Some are used in casual conversation, while others appear more often in formal writing or news reports. Learning these words will help you sound more natural when communicating in Japanese.
In this guide, you will learn the most important Japanese words for describing size, how they are used, and how you can remember them more easily.
How to Say “Big” and “Small” in Japanese
To start with, here are the two most common Japanese words used to describe size:
- 大きい (ookii) — big, large
- 小さい (chiisai) — small
Both are essential words for beginners because they are used frequently in daily conversation.
大きい (ookii) — Big
Pronunciation: ookii
Meaning: big, large
大きい is the most common Japanese word used to describe something that is big or large.
You can use it with objects, animals, buildings, or even abstract things like problems.
Examples
この家は大きいです。
Kono ie wa ookii desu.
This house is big.
大きい犬が好きです。
Ookii inu ga suki desu.
I like big dogs.
As an i-adjective, 大きい can appear before a noun or at the end of a sentence.
Examples
大きい家
A big house
この家は大きい。
This house is big.
小さい (chiisai) — Small
Pronunciation: chiisai
Meaning: small
小さい is the opposite of 大きい and is used in the same way.
Examples
小さいカフェがあります。
Chiisai kafe ga arimasu.
There is a small café.
その箱は小さいです。
Sono hako wa chiisai desu.
That box is small.
The adjectives 大きい and 小さい are the basic words used to describe size in Japanese.
Other Japanese Words That Describe Size
Japanese also has several other words that describe size. Some are common in everyday speech, while others are more formal or used in writing.
Here are some useful ones to know.
大きな (ookina)
Pronunciation: ookina
Meaning: big, large
The word 大きな is similar to 大きい, but it can only be used before a noun.
Example
大きな木があります。
Ookina ki ga arimasu.
There is a big tree.
Difference Between 大きい and 大きな
Both of the following are correct:
大きい木
Big tree
大きな木
Big tree
However, 大きな often sounds a little more descriptive or emotive than 大きい. It is common in writing, stories, and songs, but it is also used in ordinary everyday speech.
小さな (chiisana)
Pronunciation: chiisana
Meaning: small
Like 大きな, 小さな can only appear before a noun.
Example
小さな村に住んでいます。
Chiisana mura ni sundeimasu.
I live in a small village.
This word often appears in stories, songs, or descriptive writing, but it can also be heard in normal conversation.
巨大 / 巨大な (kyodai / kyodai na)
Pronunciation: kyodai
Meaning: gigantic, enormous
巨大 means something extremely large.
When used before a noun, it usually appears as 巨大な.
Examples
巨大なビルがあります。
Kyodai na biru ga arimasu.
There is a gigantic building.
巨大なクジラがいます。
Kyodai na kujira ga imasu.
There is a huge whale.
This word often appears in news reports, documentaries, or formal descriptions.
でかい (dekai)
Pronunciation: dekai
Meaning: huge, big (casual)
でかい is a casual and somewhat rough way to say “big.” It is commonly used among friends in informal conversation.
Example
そのハンバーガーはでかいね！
Sono hanbaagaa wa dekai ne!
That hamburger is huge!
Because it is informal, it should not be used in formal situations.
ちっちゃい (chicchai)
Pronunciation: chicchai
Meaning: tiny, very small
ちっちゃい is a casual and cute way to say “small.”
It is often used when talking about:
- small animals
- children
- small objects
Example
ちっちゃい猫がいます。
Chicchai neko ga imasu.
There is a tiny cat.
小型 (kogata)
Pronunciation: kogata
Meaning: compact, small-sized
小型 is often used when describing machines, vehicles, or products.
Example
小型カメラを買いました。
Kogata kamera o kaimashita.
I bought a compact camera.
大型 (oogata)
Pronunciation: oogata
Meaning: large-sized, large-scale
大型 usually refers to large vehicles, equipment, or machines.
Example
大型トラックが通りました。
Oogata torakku ga toorimashita.
A large truck passed by.
ミニ (mini)
Pronunciation: mini
Meaning: mini, small
ミニ is a loanword from English and is often used in product names or fashion.
Examples
ミニスカート
Mini skirt
ミニサイズ
Mini size
Japanese frequently borrows English words, and ミニ is a common example.
Size Words Used in Everyday Japanese
Not all size words are used equally often. Some appear frequently in daily conversation, while others are more formal.
Most Common Everyday Words
These are the words you will hear most often:
- 大きい (ookii) — big
- 小さい (chiisai) — small
- でかい (dekai) — big, huge, casual
- ちっちゃい (chicchai) — tiny, casual
More Formal or Descriptive Words
These are often used in writing or more formal descriptions:
- 巨大 / 巨大な — gigantic
- 大型 — large-sized
- 小型 — compact, small-sized
Words Used in Product Names
- ミニ — mini
Table Summary
Here is a quick summary of the most useful Japanese size words:
| Japanese | Romaji | Meaning | Typical Use |
|---|---|---|---|
| 大きい | ookii | big | everyday adjective |
| 小さい | chiisai | small | everyday adjective |
| 大きな | ookina | big | used before nouns |
| 小さな | chiisana | small | used before nouns |
| 巨大 | kyodai | gigantic | formal descriptions |
| 巨大な | kyodai na | huge | before nouns |
| でかい | dekai | big | casual speech |
| ちっちゃい | chicchai | tiny | casual speech |
| 小型 | kogata | compact | products and machines |
| 大型 | oogata | large-sized | vehicles or equipment |
| ミニ | mini | mini | product names |
Tips for Remembering Japanese Size Words
Here are some helpful tips for remembering Japanese size words.
1. Start With the Basics
First learn these two essential words:
- 大きい — big
- 小さい — small
You will hear these constantly in everyday Japanese.
2. Pay Attention to Kanji Meanings
Many size-related words use common kanji.
Examples:
- 大 — big
- 小 — small
- 型 — type or model
So:
- 大型 — big type
- 小型 — small type
Understanding kanji helps you guess meanings more easily.
3. Notice Casual Variations
Japanese has many casual ways to express common ideas.
For example:
- 小さい → ちっちゃい is a casual variation
- でかい is a separate informal word meaning “big” or “huge”
Listening to native speakers or watching Japanese shows can help you learn these naturally.
4. Learn Words in Sentences
Instead of memorizing vocabulary lists, learn words in sentences.
Examples
この犬は大きいです。
This dog is big.
小さいカフェが好きです。
I like small cafés.
その魚はでかい！
That fish is huge!
Learning words in context makes them easier to remember.
FAQ: Big and Small in Japanese
How do I say “big” in Japanese?
The most common word for “big” in Japanese is:
大きい (ookii)
Example
この公園は大きいです。
This park is big.
How do I say “small” in Japanese?
The standard word for “small” in Japanese is:
小さい (chiisai)
Example
小さい店があります。
There is a small shop.
What is the difference between 大きい and 大きな?
Both mean “big,” but they are used slightly differently.
大きい
- can appear before a noun
- can appear at the end of a sentence
Example
この犬は大きい。
This dog is big.
大きな
- only appears before a noun
Example
大きな犬
A big dog
Also, 大きな often feels a little more descriptive or expressive than 大きい.
How do you say big and small in Japanese casually?
In casual conversation, people sometimes use these words:
- でかい (dekai) — big, huge
- ちっちゃい (chicchai) — tiny
Examples
そのピザはでかい！
That pizza is huge!
ちっちゃい鳥だね。
That’s a tiny bird.
Final Thoughts
Learning how to say “big” and “small” is an essential part of speaking Japanese. The words 大きい and 小さい appear constantly in everyday conversation, making them some of the first adjectives most Japanese learners study.
As your Japanese improves, you can expand your vocabulary with words like 巨大, 大型, and 小型 to describe size more precisely. You can also learn informal expressions such as でかい and ちっちゃい to sound more natural in casual conversation.
By practicing these words in sentences and paying attention to how native speakers use them, you will quickly become more comfortable describing size in Japanese.
