Japanese Numbers 1–1000 Explained: Complete Beginner’s Guide
Sophia Martinez
Japanese numbers are strictly systematic and modular. You do not need to memorize 1,000 individual words. Once you learn the foundational digits 1 to 10, plus the core base multipliers for 10 (十), 100 (百), and 1,000 (千), you can construct any number through simple additive and multiplicative formulas (e.g., $25 = 2 \times 10 + 5$; $125 = 100 + 20 + 5$).
Learning Japanese numbers can seem difficult at first. You may see a number such as 358 and wonder how you are supposed to remember it. Then you encounter 777, 1,234, or a Tokyo department store price tag and think, "Do I really need to memorize thousands of words?"
The good news is an emphatic no. Japanese numbers follow a wonderfully regular, predictable pattern. Once you learn the basic numbers from 1 to 10, plus the building blocks for 10, 100, and 1,000, you can create almost every number yourself. That makes Japanese counting much easier than it first appears.
The Core Number Formula
The secret to counting effortlessly in Japanese
Where You Will Use Japanese Numbers
Numbers are not an isolated academic vocabulary topic. They appear constantly in everyday real-world interactions across Japan:
"It is 1,000 yen." — Notice how 千 (1,000) attaches directly to 円 (yen).
"I am 25 years old." — Built cleanly from $20 (にじゅう) + 5 (ご) + 歳 (さい/age counter).
The Japanese Number System
The Japanese system is decimal and positional. Memorize these core building blocks:
| Digit | Kanji | Hiragana | Romaji | English Meaning |
|---|---|---|---|---|
| 1 | 一 | いち | Ichi | One |
| 2 | 二 | に | Ni | Two |
| 3 | 三 | さん | San | Three |
| 4 | 四 | よん / し | Yon / Shi | Four |
| 5 | 五 | ご | Go | Five |
| 6 | 六 | ろく | Roku | Six |
| 7 | 七 | なな / しち | Nana / Shichi | Seven |
| 8 | 八 | はち | Hachi | Eight |
| 9 | 九 | きゅう / く | Kyū / Ku | Nine |
| 10 | 十 | じゅう | Jū | Ten (Base) |
| 100 | 百 | ひゃく | Hyaku | One hundred (Base) |
| 1,000 | 千 | せん | Sen | One thousand (Base) |
How the Math Works in Japanese
The Three Numbers With Multiple Readings (4, 7, 9)
In Japanese, the digits 4, 7, and 9 possess more than one standard pronunciation. Both readings are authentic, but their usage depends on grammar, counters, and traditional associations:
Beginner Rule: Default to よん (yon). The pronunciation し (shi) sounds identical to 死 (death), so it is traditionally avoided in everyday counting. It appears primarily in fixed sets like 四月 (April) and 四時 (4 o'clock, with a shortened sound).
Beginner Rule: なな (nana) is common and avoids confusion with いち (ichi / 1) over the phone. しち (shichi) is standard for clock time (七時 = 7:00) and months (七月 = July).
Beginner Rule: Use きゅう (kyū) as your default reading. く (ku) sounds identical to 苦 (suffering/pain), so it is reserved for specific time terms like 九時 (9 o'clock) and 九月 (September).
Japanese Numbers 11–20
You do not need to memorize these as 10 brand-new words. The formula is simply:
| Number | Kanji | Hiragana | Romaji | Pattern Math |
|---|---|---|---|---|
| 11 | 十一 | じゅういち | Jū ichi | $10 + 1$ |
| 12 | 十二 | じゅうに | Jū ni | $10 + 2$ |
| 13 | 十三 | じゅうさん | Jū san | $10 + 3$ |
| 14 | 十四 | じゅうよん | Jū yon | $10 + 4$ |
| 15 | 十五 | じゅうご | Jū go | $10 + 5$ |
| 16 | 十六 | じゅうろく | Jū roku | $10 + 6$ |
| 17 | 十七 | じゅうなな | Jū nana | $10 + 7$ |
| 18 | 十八 | じゅうはち | Jū hachi | $10 + 8$ |
| 19 | 十九 | じゅうきゅう | Jū kyū | $10 + 9$ |
| 20 | 二十 | にじゅう | Nijū | $2 \times 10$ |
Japanese Numbers 21–99: Learn the Tens
To build any number between 21 and 99, think: [Multiplier] + 十 + [Digit]. You only need to know how the round tens work:
| Tens Number | Kanji | Hiragana | Romaji | Example Compound |
|---|---|---|---|---|
| 10 | 十 | じゅう | Jū | 14: 十四 (Jū yon) |
| 20 | 二十 | にじゅう | Nijū | 21: 二十一 (Nijū ichi) |
| 30 | 三十 | さんじゅう | Sanjū | 35: 三十五 (Sanjū go) |
| 40 | 四十 | よんじゅう | Yonjū | 48: 四十八 (Yonjū hachi) |
| 50 | 五十 | ごじゅう | Gojū | 56: 五十六 (Gojū roku) |
| 60 | 六十 | ろくじゅう | Rokujū | 64: 六十四 (Roku-jū yon) |
| 70 | 七十 | ななじゅう | Nanajū | 71: 七十一 (Nanajū ichi) |
| 80 | 八十 | はちじゅう | Hachijū | 84: 八十四 (Hachijū yon) |
| 90 | 九十 | きゅうじゅう | Kyūjū | 99: 九十九 (Kyūjū kyū) |
You are not learning an arbitrary word like "sixty-four". You are merely calculating $6 \times 10 + 4$.
Japanese Numbers 100–999: The Hundreds Base
The word for 100 is 百 (hyaku). Most hundreds follow the simple pattern of [Digit] + 百 (e.g., 200 = 二百). However, Japanese uses three critical phonetic changes at 300, 600, and 800 to make pronunciation smoother:
| Hundreds | Kanji | Hiragana | Romaji | Pronunciation Status |
|---|---|---|---|---|
| 100 | 百 | ひゃく | Hyaku | Base form (No ichi added) |
| 200 | 二百 | にひゃく | Nihyaku | Regular ($2 \times 100$) |
| 300 | 三百 | さんびゃく | Sanbyaku | ⚠️ Voiced shift: ひゃく → びゃく |
| 400 | 四百 | よんひゃく | Yonhyaku | Regular |
| 500 | 五百 | ごひゃく | Gohyaku | Regular |
| 600 | 六百 | ろっぴゃく | Roppyaku | ⚠️️ Small っ + 半濁点: ろく → ろっぴゃく |
| 700 | 七百 | ななひゃく | Nanahyaku | Regular |
| 800 | 八百 | はっぴゃく | Happyaku | ⚠️ Small っ + 半濁点: はち → はっぴゃく |
| 900 | 九百 | きゅうひゃく | Kyūhyaku | Regular |
Never say "san-hyaku". The H sound shifts to a voiced B sound (びゃく).
Never say "roku-hyaku". The ku collapses into a glottal stop small っ with a P sound (ぴゃく).
Never say "hachi-hyaku". The chi collapses into a glottal stop small っ with a P sound (ぴゃく).
How to Build Numbers from 101 to 999
Now combine hundreds, tens, and units into one seamless sequence:
How to Say 1,000 in Japanese (千)
The foundation for 1,000 is 千 (sen). Unlike in English, where you must say "one thousand", Japanese simply says 千 on its own without prefixing the number 1 (一):
Deconstruction: 千 (1,000) + 二百 (200) + 三十 (30) + 四 (4). Exactly the same building blocks in action!
Japanese Numbers 1–100: Quick Reference Chart
Master ReferenceUse this comprehensive chart for verification and review. Notice how the regular pattern carries all the way from 1 to 100:
| Num | Kanji | Hiragana | Romaji | Num | Kanji | Hiragana | Romaji |
|---|---|---|---|---|---|---|---|
| 1 | 一 | いち | Ichi | 26 | 二十六 | にじゅうろく | Nijū roku |
| 2 | 二 | に | Ni | 27 | 二十七 | にじゅうなな | Nijū nana |
| 3 | 三 | さん | San | 28 | 二十八 | にじゅうはち | Nijū hachi |
| 4 | 四 | よん | Yon | 29 | 二十九 | にじゅうきゅう | Nijū kyū |
| 5 | 五 | ご | Go | 30 | 三十 | さんじゅう | Sanjū |
| 6 | 六 | ろく | Roku | 31 | 三十一 | さんじゅういち | Sanjū ichi |
| 7 | 七 | なな | Nana | 32 | 三十二 | さんじゅうに | Sanjū ni |
| 8 | 八 | はち | Hachi | 33 | 三十三 | さんじゅうさん | Sanjū san |
| 9 | 九 | きゅう | Kyū | 34 | 三十四 | さんじゅうよん | Sanjū yon |
| 10 | 十 | じゅう | Jū | 35 | 三十五 | さんじゅうご | Sanjū go |
| 11 | 十一 | じゅういち | Jū ichi | 36 | 三十六 | さんじゅうろく | Sanjū roku |
| 12 | 十二 | じゅうに | Jū ni | 37 | 三十七 | さんじゅうなな | Sanjū nana |
| 13 | 十三 | じゅうさん | Jū san | 38 | 三十八 | さんじゅうはち | Sanjū hachi |
| 14 | 十四 | じゅうよん | Jū yon | 39 | 三十九 | さんじゅうきゅう | Sanjū kyū |
| 15 | 十五 | じゅうご | Jū go | 40 | 四十 | よんじゅう | Yonjū |
| 16 | 十六 | じゅうろく | Jū roku | 50 | 五十 | ごじゅう | Gojū |
| 17 | 十七 | じゅうなな | Jū nana | 60 | 六十 | ろくじゅう | Rokujū |
| 18 | 十八 | じゅうはち | Jū hachi | 70 | 七十 | ななじゅう | Nanajū |
| 19 | 十九 | じゅうきゅう | Jū kyū | 80 | 八十 | はちじゅう | Hachijū |
| 20 | 二十 | にじゅう | Nijū | 90 | 九十 | きゅうじゅう | Kyūjū |
| 21 | 二十一 | にじゅういち | Nijū ichi | 100 | 百 | ひゃく | Hyaku |
*Tip: Rather than memorizing every line, verify your building blocks: tens + units.
Important Pronunciation Rules Checklist
Default to よん (yon) for basic counting.
Default to なな (nana); use shichi for time/months.
Default to きゅう (kyū); use ku for 9 o'clock (九時).
Hyaku shifts to byaku (Sanbyaku).
Roku + hyaku collapses to Roppyaku.
Hachi + hyaku collapses to Happyaku.
Japanese Numbers and Counters
In English, we say "three books," "two people," or "five cars." In Japanese, numbers are almost always followed by a counter (助数詞) that specifies the shape, physical category, or nature of the item being counted:
| Counter Kanji | Hiragana | Romaji | Used For | Practical Example |
|---|---|---|---|---|
| 〜つ | 〜つ | ~tsu | General objects & abstract things (1–10) | 一つ (Hitotsu / One item) |
| 人 | にん | ~nin | People (Exceptions: 1人 hitori, 2人 futari) | 三人 (San-nin / 3 people) |
| 本 | ほん | ~hon | Long, cylindrical objects (pens, bottles, trees) | 二本 (Ni-hon / 2 bottles) |
| 枚 | まい | ~mai | Flat, thin objects (paper, tickets, plates, shirts) | 一枚 (Ichi-mai / 1 ticket) |
| 個 | こ | ~ko | Small, compact items (apples, eggs, dice) | 五個 (Go-ko / 5 items) |
| 冊 | さつ | ~satsu | Bound volumes, books, notebooks, magazines | 三冊 (San-satsu / 3 books) |
| 台 | だい | ~dai | Machines, vehicles, bicycles, electronics | 一台 (Ichi-dai / 1 car) |
Numbers in Real-Life Japanese
It is 1,000 yen.
I am 25 years old.
There are three people.
There are three books.
It is seven o'clock.
5 Practical Mini Dialogues
See how numbers work in natural beginner conversational scenarios:
English: "This is 1,000 yen."
How much is it?
It is 500 yen.
How old are you?
I am 25 years old.
How many people in your party?
Three people.
English: "How many are there?" — Uses the general 〜つ system for unspecified items.
6 Common Beginner Mistakes to Avoid
Memorizing 1,000 Separate Words
Wrong: Treating 27, 54, and 83 as isolated vocabulary.
Fix: Master 1–10 and bases (10, 100, 1000) to build any number.
Ignoring the Building Pattern
Wrong: Pausing to recall 27 from memory.
Fix: Think tens + units: $20 (にじゅう) + 7 (なな) = 二十七$.
Assuming One Reading Works for 4, 7, 9
Wrong: Forcing yon into every single expression.
Fix: Learn context exceptions (e.g., 4:00 is yoji, 7:00 is shichiji).
Pronouncing 300 Regularly
Wrong: Saying "san-hyaku".
Fix: The voiced shift turns it into さんびゃく (Sanbyaku).
Forgetting Glottal Stops in 600 & 800
Wrong: Saying "roku-hyaku" or "hachi-hyaku".
Fix: Master ろっぴゃく (roppyaku) and はっぴゃく (happyaku).
Neglecting Counters
Wrong: Translating "three books" directly as *san hon*.
Fix: Use the proper book counter: 三冊 (san-satsu).
8 Easy Ways to Remember Japanese Numbers
Master 1–10 First
Do not rush ahead. Recite 1 through 10 aloud until sound recall is instant.
Learn the Tens Rhythm
Memorize 20, 30, 40, and build numbers like 26 or 73 spontaneously.
Anchor 100 & 1,000
Once 百 and 千 feel natural, 3- and 4-digit numbers unlock instantly.
Practice Random Numbers
Avoid linear counting (1, 2, 3...). Pick random figures like 24, 57, 136, 402, and 775.
Read Japanese Prices Aloud
When browsing Japanese websites or menus, vocalize the yen amounts in Japanese.
Use 2-Minute Sprints
Write 10 arbitrary digits on paper. Set a timer and say each one accurately in Japanese.
Apply Spaced Repetition (SRS)
Review irregular numbers (300, 600, 800) at expanding intervals rather than cramming once.
Incorporate Numbers into Daily Speech
State the current clock time, your age, or items on your desk in Japanese daily.
The 7-Day Japanese Numbers Action Plan
A simple, highly focused 15-minute daily study plan to master numbers 1 to 1,000 in one week:
| Day | Daily Focus | Practice Exercises |
|---|---|---|
| Day 1 | Numbers 1–10 | Master basic 1–10 sounds; notice dual readings for 4, 7, and 9. |
| Day 2 | Numbers 11–20 | Apply the 10 + digit formula; say 11 through 20 smoothly without pausing. |
| Day 3 | Tens: 20–90 | Learn multiplicative tens: にじゅう, さんじゅう, よんじゅう, up to きゅうじゅう. |
| Day 4 | Compound 21–99 | Combine tens and ones (e.g., 25, 48, 64, 99) using random flashcards. |
| Day 5 | Hundreds (100–900) | Drill 百 and emphasize the 3 phonetic changes: 300, 600, and 800. |
| Day 6 | Numbers 101–999 | Build 3-digit figures (246, 358, 777, 999) using the 3-tier formula. |
| Day 7 | Master 1,000 & Real Scenarios | Introduce 千 and practice prices, age, and simple restaurant counters. |
Japanese Number Vocabulary Reference
| Japanese | Hiragana | Romaji | English Meaning |
|---|---|---|---|
| 一 | いち | Ichi | One |
| 二 | に | Ni | Two |
| 三 | さん | San | Three |
| 四 | よん | Yon | Four |
| 五 | ご | Go | Five |
| 六 | ろく | Roku | Six |
| 七 | なな | Nana | Seven |
| 八 | はち | Hachi | Eight |
| 九 | きゅう | Kyū | Nine |
| 十 | じゅう | Jū | Ten |
| 百 | ひゃく | Hyaku | Hundred |
| 千 | せん | Sen | Thousand |
| 数 | かず | Kazu | Number / Amount |
| 番号 | ばんごう | Bangō | Identification / Phone Number |
| 円 | えん | En | Japanese Yen |
| 人 | にん | Nin | Person counter |
| 時 | じ | Ji | O'clock / Hour |
| 歳 | さい | Sai | Years old (Age) |
| 個 | こ | Ko | Counter for small items |
| 本 | ほん | Hon | Counter for cylindrical items |
Practice: Can You Build These Numbers?
Try to solve each prompt mentally or write it on paper before clicking to reveal the authentic Japanese answer:
Number: 14 Reveal ▼
Number: 27 Reveal ▼
Number: 35 Reveal ▼
Number: 48 Reveal ▼
Number: 56 Reveal ▼
Number: 63 Reveal ▼
Number: 71 Reveal ▼
Number: 84 Reveal ▼
Number: 99 Reveal ▼
Number: 100 Reveal ▼
Number: 125 Reveal ▼
Number: 300 ⚠️ Reveal ▼
Number: 456 Reveal ▼
Number: 800 ⚠️ Reveal ▼
Number: 1,000 Reveal ▼
Frequently Asked Questions
How do you count from 1 to 1000 in Japanese? ▼
Learn 1–10 first. Then learn the building blocks for 10 (十), 100 (百), and 1,000 (千). Combine them mathematically to create larger numbers. For example, 125 is 100 + 20 + 5 (百二十五).
What are the Japanese numbers 1–10? ▼
How do you say 100 and 1,000 in Japanese? ▼
100 is 百 (hyaku) and 1,000 is 千 (sen). In standard Japanese, you do not need to add the prefix ichi in front of them when stating clean hundred or thousand amounts.
Why do 300, 600, and 800 sound different? ▼
Japanese uses sound euphony (音便, onbin) to make pronunciation quicker and less strenuous. 300 uses a voiced shift (三百 / sanbyaku), while 600 and 800 substitute a glottal stop small っ (六百 / roppyaku and 八百 / happyaku).
What is the difference between readings for 4 (yon vs. shi) and 7 (nana vs. shichi)? ▼
The difference originates from native Japanese (wago) vs. Sino-Japanese (kango) roots. For 4, yon is preferred because shi is a homophone for death (死). For 7, nana is widely used to prevent audio confusion with ichi (1), while shichi is retained for standard time counting (七時 / 7:00).
Key Takeaways
- • Japanese numbers follow an orderly, mathematical decimal pattern.
- • Master 1–10 first as your permanent bedrock foundation.
- • 十 (10), 百 (100), and 千 (1,000) are your essential multipliers.
- • Memorize the 3 phonetic changes: 300 (sanbyaku), 600 (roppyaku), 800 (happyaku).
- • Learn numbers first, then attach counters gradually.
- • Practice with random numbers and prices instead of reciting linear lists.
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