Thai Numbers and Numerals

Numerals zero through nine digit Thai numeral Thai word Phonemic transcription 0 ๐  ศูนย์  suunR (zero) 1 ๑  หนึ่ง  neungL (one) 2 ๒  สอง  saawngR (two) 3 ๓  สาม  saamR (three) 4 ๔  สี่  seeL (four) 5 ๕  ห้า  haaF (five) 6 ๖  หก  hohkL (six) 7 ๗  เจ็ด  jetL (seven) 8 ๘  แปด  bpaaetL (eight) 9 ๙  เก้า  gaaoF (nine)

Counting ten and beyond number Thai word Phonemic transcription 10 สิบ  sipL (ten) 100 ร้อย  raawyH (hundred) 1,000 พัน  phanM (thousand) 10,000 หมื่น  meuunL (ten-thousand) 100,000 แสน  saaenR (hundred-thousand) 1,000,000 ล้าน  laanH (million) 1.0E7 considered "ten million" 1.0E8 considered "hundred million" 1.0E9 considered "thousand million"

• Numbers ending in one between eleven and ninety-one use the word เอ็ด   /etL/ instead of หนึ่ง   /neungL/ (one, 1) as in the following:

  หนึ่ง	neungL	one, 1
  สิบเอ็ด	sipL etL	eleven, 11
  สามสิบเอ็ด	saamR sipL etL	thirty-one, 31
  ร้อยหนึ่ง	raawyH neungL	one hundred one, 101
• Numbers between twelve and nineteen are not special as they are in English. They are considered "ten-two," "ten-three," etc.
• If a rule in English is to add -ty to a digit to obtain the tens series, then twenty, thirty, and fifty are exceptions. In Thai, the only special word is ยี่สิบ  /yeeF sipL/ (twenty, 20).
• Ordinals are formed by prefixing a number with the word ที่   /theeF/ as in the following examples:

  ที่หนึ่ง	theeF neungL	first
  ที่สอง	theeF saawngR	second
  ที่สิบเอ็ด	theeF sipL etL	eleventh
• Note that the words Ten-thousand and hundred-thousand are not compounds as they are in English‚there are unique Thai words for these shown in the chart above.
• The word หนึ่ง   /neungL/ (one, 1) can be omitted if it occurs at the beginning of any number (other than one, of course).
• โท   /tho:hM/ is used instead of สอง   /saawngR/ (two, 2) when saying a telephone number, perhaps because this is believed to eliminate confusion between two and three if the connection is poor.

Examples
number	Thai numerals	Thai spelling	Phonemic transcription
1	๑	หนึ่ง	neungL
21	๒๑	ยี่สิบเอ็ด	yeeF sipL etL
22	๒๒	ยี่สิบสอง	yeeF sipL saawngR
12,345	๑๒๓๔๕	หมื่นสองพันสามร้อยสี่สิบห้า	meuunL saawngR phanM saamR raawyH seeL sipL haaF