Numbers

1. หนึ่ง

   Nùeng

   One (1)

   Grammar Note

   Thai counting: 1–10 are base numbers. 11+ combines สิบ (10) + units digit. Note: when 1 is in the units place, it changes to "et"

2. สอง

   Sǒng

   Two (2)

   Grammar Note

   "Song" = two. Note: 20 is "yi sip" — "song" changes to "yi" at the tens place only. "Song roi" = 200, "song phan" = 2,000

3. สาม

   Sǎm

   Three (3)

   Grammar Note

   "Sam" = three, rising tone. Used in time: "sam mong" (3 o'clock). Month: "duean sam" (March — the third month)

4. สี่

   Sì

   Four (4)

   Grammar Note

   "Si" (4, low tone) vs "si" (color, rising tone) — easily confused. Tone makes all the difference in Thai

5. ห้า

   Hâ

   Five (5)

   Usage

   "555" is Thai internet slang for laughter (like "hahaha") since "ha" sounds like laughing

6. หก

   Hòk

   Six (6)

   Grammar Note

   "Hok" = six, low tone. "6pm" = "hok mong yen" (evening 6 o'clock). Add "chao" (morning) or "yen" (evening) to clarify AM/PM

7. เจ็ด

   Chèt

   Seven (7)

   Grammar Note

   "Chet" = seven. Note: "chep" = hurt/pain — similar sound, different meaning. 7 has no special cultural significance in Thailand

8. แปด

   Pàet

   Eight (8)

   Grammar Note

   "Paet" = eight. 8 is considered lucky in Thai culture too. Used in time: "paet mong chao" (8 AM)

9. เก้า

   Kâo

   Nine (9)

   Grammar Note

   "Kao" = nine. 9 is auspicious in Thai culture — associated with "kao na" (progress/advance). Prices often end in 9 (e.g. 99 baht)

10. สิบ

    Sìp

    Ten (10)

11. ยี่สิบ

    Yî sìp

    Twenty (20)

    Usage

    For 21+, combine "yi sip" with the units digit, e.g. "yi sip et" (21)

    Grammar Note

    20 is irregular — "yi sip" uses special "yi" for two. 30–90 follow the regular pattern: สามสิบ (30), สี่สิบ (40)...

12. หนึ่งร้อย

    Nùeng rói

    One hundred (100)

    Usage

    "Roi" means hundred. "Song roi" = 200

    Grammar Note

    Unit words: sip(10), roi(100), phan(1K), muen(10K), saen(100K), lan(1M). The distinct word for 10,000 mirrors Japanese "man"

13. หนึ่งพัน

    Nùeng phan

    One thousand (1,000)

    Usage

    "Phan" means thousand. Thai banknotes come in 20, 50, 100, 500, and 1,000 baht

    Grammar Note

    1,500 = "nueng phan ha roi" or shortened to "phan ha". Very common range for hotels and tours in Thai baht

14. หนึ่งหมื่น

    Nùeng mùen

    Ten thousand (10,000)

    Usage

    "Muen" (10,000) is a distinct unit in Thai, similar to the Chinese/Japanese "wan/man"

    Grammar Note

    "Muen" (10,000) is a useful denomination — similar to the Japanese "man". 100K = "saen"; 1M = "lan"

15. อายุยี่สิบเจ็ดปีครับ / ค่ะ

    Ayú yî sìp chèt pi khráp / khâ

    I'm 27 years old

    Usage

    How to answer "khun ayu thao rai khrap / kha" (how old are you?). Thai normally drops the subject, so there is no need to add "phom / dichan" (I)

    Grammar Note

    Age follows the order "ayu + number + pi". "Yi sip chet" is "yi sip" (20) + "chet" (7); note that only 20 takes the special form "yi sip" rather than "song sip". For young children Thai uses "khuap" instead of "pi". As a statement, the female particle is the low-toned ค่ะ

16. ปีนี้อายุยี่สิบแปดปีครับ / ค่ะ

    Pi ní ayú yî sìp pàet pi khráp / khâ

    I turn 28 this year

    Usage

    Putting "pi ni" (this year) in front is enough to mean "I turn … this year"; Thai does not need a separate verb for "become"

    Grammar Note

    "Pi" (year) + "ni" (this) gives "this year". "Ni" is the same demonstrative as in "an ni" (this one) and "wan ni" (today), and always follows its noun. The age phrase itself stays "ayu + number + pi"; only the time expression is added in front. As a statement, the female particle is the low-toned ค่ะ

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