Thai numerals are traditionally used in Thailand, although the Hindu-Arabic numerals (also known as Western numerals) are more common. Apart from the different symbols used for the numerals, the Thai numeration system is exactly the same as the Hindu-Arabic numeral system used in most of the rest of the world.

Thai	phonetic	value
๐	sun	zero
๑	nueng	one
๒	song	two
๓	sam	three
๔	si	four
๕	ha	five
๖	hok	six
๗	chet	seven
๘	paet	eight
๙	kao	nine

From ten to a million

---

These are assembled from the words for the powers of ten. The number one following a power of ten becomes et. The numbers from twenty to twenty nine begin with yi sip.

Thai	phonetic	value
สิบ	sip	ten
สิบเอ็ด	sip et	eleven
ยี่สิบ	yi sip	twenty
ร้อย	roi	hundred
พัน	phan	thousand
หมื่น	muen	ten thousand
แสน	saen	hundred thousand
ล้าน	lan	million

For example, two hundred and thirty-two is song roi sam sip song. The words roi, phan etc. should never be used without a preceding numeral (unless it is beginning nueng), so two hundred and ten, for example, is song roi sip and not song roi nueng sip, and one hundred is either roi or nueng roi (both are acceptable). The same thing goes for phan, muen, saen, and so forth. Native speakers will sometimes use roi nueng (or phan nueng, etc.) with different tones on nueng to distinguish one hundred from one hundred and one. However, such distinction is often not made, and ambiguity may follow. To resolve this problem, if the number 101 (or 1001, 10001, etc.) is intended, one should say roi et (or phan et, muen et, etc.).

Above a million

---

Numbers above a million are constructed by prefixing lan with a multiplier. For example, ten million is sip lan, and a trillion (10¹²) is lan lan.

See also

---

• Thai language
• Thai alphabet

Thai culture | Numeration

Numération thaï | Thaise cijfers | เลขไทย | 泰文数字