Thai Numbers 1-10, The Essential Foundation
These ten numbers are your building blocks for nearly every Thai number you will say. Memorize them with their Thai script, transliteration, and tone to construct most numbers up to one hundred.
Master Each Digit
Start by learning the number, its Thai script, and how to pronounce it correctly. Each has a specific tone that changes how native speakers interpret it.
Use Real Examples
Practice each number in context. Saying "หนึ่งคน (neung kon)" for "one person" anchors the number to real situations you will encounter.
- ๑ (หนึ่ง): neung (low tone). Example: "ผมมีพี่ชายหนึ่งคน" (I have one older brother).
- ๒ (สอง): song (rising tone). Example: "ขอกาแฟสองแก้ว" (Two coffees, please).
- ๓ (สาม): sam (rising tone). Example: "ฉันมีลูกสามคน" (I have three children).
- ๔ (สี่): see (low tone). Example: "สี่โมงเย็น" (Four o'clock in the evening).
- ๕ (ห้า): haa (falling tone). Example: "ห้าร้อยบาท" (Five hundred baht).
- ๖ (หก): hok (low tone). Example: "หกโมงเช้า" (Six o'clock in the morning).
- ๗ (เจ็ด): jet (low tone). Example: "เจ็ดวันต่อสัปดาห์" (Seven days per week).
- ๘ (แปด): paet (low tone). Example: "แปดโมงเช้า" (Eight in the morning).
- ๙ (เก้า): gao (falling tone). Example: "เก้าบาท" (Nine baht).
- ๑๐ (สิบ): sip (low tone). Example: "สิบนาที" (Ten minutes).
| Term | Meaning | Pronunciation | Example |
|---|---|---|---|
| ๑ (หนึ่ง) | one (1) | neung (low tone) | ผมมีพี่ชายหนึ่งคน, Phom mee pee-chai neung kon., I have one older brother. |
| ๒ (สอง) | two (2) | song (rising tone) | ขอกาแฟสองแก้ว, Kor gafae song gaew., Two coffees, please. |
| ๓ (สาม) | three (3) | sam (rising tone) | ฉันมีลูกสามคน, Chan mee look sam kon., I have three children. |
| ๔ (สี่) | four (4) | see (low tone) | สี่โมงเย็น, See mong yen., Four o'clock in the evening. |
| ๕ (ห้า) | five (5) | haa (falling tone) | ห้าร้อยบาท, Haa roi baht., Five hundred baht. |
| ๖ (หก) | six (6) | hok (low tone) | หกโมงเช้า, Hok mong chao., Six o'clock in the morning. |
| ๗ (เจ็ด) | seven (7) | jet (low tone) | เจ็ดวันต่อสัปดาห์, Jet wan tor sap-da., Seven days per week. |
| ๘ (แปด) | eight (8) | paet (low tone) | แปดโมงเช้า, Paet mong chao., Eight in the morning. |
| ๙ (เก้า) | nine (9) | gao (falling tone) | เก้าบาท, Gao baht., Nine baht. |
| ๑๐ (สิบ) | ten (10) | sip (low tone) | สิบนาที, Sip na-tee., Ten minutes. |
Thai Numbers 11-20, Building on the Base
Numbers 11 through 19 combine "sip" (ten) with the corresponding digit. Only two irregularities exist: 11 uses "et" instead of "neung," and 20 uses the older word "yi" for two.
The Simple Pattern for 11-19
Take "sip" and add the digit word: sip-et (11), sip-song (12), sip-sam (13), and so on. This pattern works perfectly until you reach 20, where an exception appears.
Learn the Exception: 20
The number 20 is "yi-sip" (not "song-sip"). This uses an archaic word for two that survives only in this number. It's a fixed rule worth memorizing as a set phrase.
- ๑๑ (สิบเอ็ด): sip-et (low-low tone). Example: "สิบเอ็ดคน" (Eleven people).
- ๑๒ (สิบสอง): sip-song (low-rising tone). Example: "สิบสองเดือน" (Twelve months).
- ๑๓ (สิบสาม): sip-sam (low-rising tone). Example: "อายุสิบสาม" (Thirteen years old).
- ๑๔ (สิบสี่): sip-see (low-low tone). Example: "วันที่สิบสี่" (The fourteenth).
- ๑๕ (สิบห้า): sip-haa (low-falling tone). Example: "สิบห้านาที" (Fifteen minutes).
- ๑๖ (สิบหก): sip-hok (low-low tone). Example: "อายุสิบหก" (Sixteen years old).
- ๑๗ (สิบเจ็ด): sip-jet (low-low tone). Example: "ห้องสิบเจ็ด" (Room seventeen).
- ๑๘ (สิบแปด): sip-paet (low-low tone). Example: "อายุสิบแปด" (Eighteen years old).
- ๑๙ (สิบเก้า): sip-gao (low-falling tone). Example: "ชั้นสิบเก้า" (Nineteenth floor).
- ๒๐ (ยี่สิบ): yi-sip (falling-low tone). Example: "ยี่สิบบาท" (Twenty baht).
| Term | Meaning | Pronunciation | Example |
|---|---|---|---|
| ๑๑ (สิบเอ็ด) | eleven (11) | sip-et (low-low tone) | สิบเอ็ดคน, Sip-et kon., Eleven people. |
| ๑๒ (สิบสอง) | twelve (12) | sip-song (low-rising tone) | สิบสองเดือน, Sip-song duean., Twelve months. |
| ๑๓ (สิบสาม) | thirteen (13) | sip-sam (low-rising tone) | อายุสิบสาม, Ayu sip-sam., Thirteen years old. |
| ๑๔ (สิบสี่) | fourteen (14) | sip-see (low-low tone) | วันที่สิบสี่, Wan tee sip-see., The fourteenth. |
| ๑๕ (สิบห้า) | fifteen (15) | sip-haa (low-falling tone) | สิบห้านาที, Sip-haa na-tee., Fifteen minutes. |
| ๑๖ (สิบหก) | sixteen (16) | sip-hok (low-low tone) | อายุสิบหก, Ayu sip-hok., Sixteen years old. |
| ๑๗ (สิบเจ็ด) | seventeen (17) | sip-jet (low-low tone) | ห้องสิบเจ็ด, Hong sip-jet., Room seventeen. |
| ๑๘ (สิบแปด) | eighteen (18) | sip-paet (low-low tone) | อายุสิบแปด, Ayu sip-paet., Eighteen years old. |
| ๑๙ (สิบเก้า) | nineteen (19) | sip-gao (low-falling tone) | ชั้นสิบเก้า, Chan sip-gao., Nineteenth floor. |
| ๒๐ (ยี่สิบ) | twenty (20) | yi-sip (falling-low tone) | ยี่สิบบาท, Yi-sip baht., Twenty baht. |
Thai Number Quirks and Cultural Notes
Thai numbers have linguistic and cultural quirks worth understanding. These help you sound natural and avoid common beginner mistakes in real-life situations.
"Et" vs "Neung" for One
Use "et" when one appears as the final digit in a compound number. Say "yi-sip-et" for 21, not "yi-sip-neung." This rule applies to all compound numbers ending in one (31 is "sam-sip-et," 41 is "see-sip-et").
Why "Yi" Only Appears in 20
The word "yi" is an archaic form of two that survives exclusively in the number 20. For 200 (two hundred), use "song-roi." For 2,000, use "song-pan." This oddity is fixed in Thai, so treat "yi-sip" as a single unit.
Related Numbers and Words
- ร้อย (roi): one hundred (falling tone). Example: "หนึ่งร้อย" (one hundred). Notice "neung" is used, not "et."
- เลข (lek): the noun "number" (high tone). Example: "เลขของฉัน" (my phone number).
- นับ (nap): "to count" (high tone). Example: "นับหนึ่งถึงสิบ" (count from one to ten).
| Term | Meaning | Pronunciation | Example |
|---|---|---|---|
| เอ็ด (et) vs หนึ่ง (neung) | Rule for 'one' in compound numbers | et / neung | Use 'et' when 'one' is the final digit in a compound number: 21 is 'yi-sip-et,' not 'yi-sip-neung.' |
| ยี่ (yi) | Old word for 'two' used only in twenty | yi (falling tone) | Twenty is 'yi-sip', not 'song-sip.' This 'yi' is only used for 20; 200 is 'song-roi.' |
| ร้อย (roi) | one hundred | roi (falling tone) | หนึ่งร้อย, Neung roi., One hundred. Notice 'neung' is used, not 'et.' |
| เลข (lek) | number (the noun) | lek (high tone) | เลขของฉัน, Lek kong chan., My (phone) number. |
| นับ (nap) | to count | nap (high tone) | นับหนึ่งถึงสิบ, Nap neung teung sip., Count from one to ten. |
How to Study Thai Effectively
Mastering Thai requires the right study approach, not just more hours. Research in cognitive science shows three techniques produce the best outcomes: active recall (testing yourself rather than re-reading), spaced repetition (reviewing at scientifically-optimized intervals), and interleaving (mixing related topics).
FluentFlash builds all three into its FSRS algorithm. Every term is scheduled for review at exactly the moment you are about to forget it, maximizing retention while minimizing study time.
Why Passive Review Fails
Re-reading notes, highlighting passages, or watching lectures feels productive, but studies show these methods produce only 10-20% retention compared to active recall. Flashcards force your brain to retrieve information, strengthening memory pathways far more than recognition alone.
A Practical Study Plan
Start by creating 15-25 flashcards covering high-priority Thai concepts. Review them daily for the first week using FSRS scheduling. As cards become easier, intervals automatically expand from minutes to days to weeks. After 2-3 weeks of consistent practice, Thai concepts become automatic.
- Generate flashcards using FluentFlash AI or create them manually from your notes.
- Study 15-20 new cards per day, plus scheduled reviews.
- Use multiple study modes (flip, multiple choice, written) to strengthen recall.
- Track your progress and identify weak topics for focused review.
- Review consistently. Daily practice beats marathon study sessions.
- 1
Generate flashcards using FluentFlash AI or create them manually from your notes
- 2
Study 15-20 new cards per day, plus scheduled reviews
- 3
Use multiple study modes (flip, multiple choice, written) to strengthen recall
- 4
Track your progress and identify weak topics for focused review
- 5
Review consistently, daily practice beats marathon sessions
Why Flashcards Work Better Than Other Study Methods for Thai
Flashcards are one of the most research-backed study tools for any subject, including Thai. When you read a textbook passage, your brain stores information in short-term memory. Without retrieval practice, it fades within hours. Flashcards force retrieval, which transfers information from short-term to long-term memory.
The "testing effect" is documented in hundreds of peer-reviewed studies. Students using flashcards consistently outperform those who re-read by 30-60% on delayed tests. This happens because retrieval strengthens neural pathways in ways passive exposure cannot. Every time you recall a concept, that concept becomes easier to recall next time.
How FSRS Amplifies This Effect
FluentFlash uses the FSRS algorithm, a modern spaced repetition system that schedules reviews at mathematically-optimal intervals based on your performance. Cards you find easy get pushed further into the future. Cards you struggle with come back sooner. Over time, this builds remarkable retention with minimal time investment.
Students using FSRS-based systems typically retain 85-95% of material after 30 days, compared to roughly 20% retention from passive review alone.