Thai Morse Code — รหัสมอร์สภาษาไทย
Convert Thai text to Morse code including all 44 consonants, vowels, tone marks, numbers and punctuation. Audio playback and WAV download included.
Online Thai Morse Code Translator
Thai Morse code uses phonetic matching with Latin letters according to ITU standards. All 44 Thai consonants, 32 vowels, and 4 tone marks are converted to Morse code through a system matching the closest Latin sound equivalents.
Some Thai characters share Morse patterns with Latin letters. For example, จ (cho chan) uses the code -.-., which is the same as C in Latin. The decoding uses Thai context to interpret the correct meaning.
Thai Morse Code Table — 44 Consonants
| Character | Name | Sound | Morse Code | Play |
|---|---|---|---|---|
| ก | ก ไก่ (Ko Kai) | K | −·− | |
| ข | ข ไข่ (Kho Khai) | KH | −·−···· | |
| ฃ | ฃ ขวด (Kho Khuat) | KH | −·−···· | |
| ค | ค ควาย (Kho Khwai) | KH | −·−···· | |
| ฅ | ฅ คน (Kho Khon) | KH | −·−···· | |
| ฆ | ฆ ระฆัง (Kho Rakhang) | KH | −·−···· | |
| ง | ง งู (Ngo Ngu) | NG | −·−−· | |
| จ | จ จาน (Cho Chan) | C | −·−· | |
| ฉ | ฉ ฉิ่ง (Cho Ching) | CH | −·−···· | |
| ช | ช ช้าง (Cho Chang) | CH | −·−···· | |
| ซ | ซ โซ่ (So So) | S | ··· | |
| ฌ | ฌ เฌอ (Cho Choe) | CH | −·−···· | |
| ญ | ญ หญิง (Yo Ying) | Y | −·−− | |
| ฎ | ฎ ชฎา (Do Chada) | D | −·· | |
| ฏ | ฏ ปฏัก (To Patak) | T | − | |
| ฐ | ฐ ฐาน (Tho Than) | TH | −···· | |
| ฑ | ฑ มณโฑ (Tho Montho) | TH | −···· | |
| ฒ | ฒ ผู้เฒ่า (Tho Phuthao) | TH | −···· | |
| ณ | ณ เณร (No Nen) | N | −· | |
| ด | ด เด็ก (Do Dek) | D | −·· | |
| ต | ต เต่า (To Tao) | T | − | |
| ถ | ถ ถุง (Tho Thung) | TH | −···· | |
| ท | ท ทหาร (Tho Thahan) | TH | −···· | |
| ธ | ธ ธง (Tho Thong) | TH | −···· | |
| น | น หนู (No Nu) | N | −· | |
| บ | บ ใบไม้ (Bo Baimai) | B | −··· | |
| ป | ป ปลา (Po Pla) | P | ·−−· | |
| ผ | ผ ผึ้ง (Pho Phueng) | PH | ·−−···· | |
| ฝ | ฝ ฝา (Fo Fa) | F | ··−· | |
| พ | พ พาน (Pho Phan) | PH | ·−−···· | |
| ฟ | ฟ ฟัน (Fo Fan) | F | ··−· | |
| ภ | ภ สำเภา (Pho Samphao) | PH | ·−−···· | |
| ม | ม ม้า (Mo Ma) | M | −− | |
| ย | ย ยักษ์ (Yo Yak) | Y | −·−− | |
| ร | ร เรือ (Ro Ruea) | R | ·−· | |
| ล | ล ลิง (Lo Ling) | L | ·−·· | |
| ว | ว แหวน (Wo Waen) | W | ·−− | |
| ศ | ศ ศาลา (So Sala) | S | ··· | |
| ษ | ษ ฤๅษี (So Ruesi) | S | ··· | |
| ส | ส เสือ (So Suea) | S | ··· | |
| ห | ห หีบ (Ho Hip) | H | ···· | |
| ฬ | ฬ จุฬา (Lo Chula) | L | ·−·· | |
| อ | อ อ่าง (O Ang) | = | −···− | |
| ฮ | ฮ นกฮูก (Ho Nokhuk) | Ñ | −−·−− |
Thai Morse Code — Numbers (0–9)
The 1912 committee that standardized Thai Morse code kept the existing international digit codes unchanged — numbers are identical whether the surrounding text is Thai, Latin, Cyrillic or any other script. Thai numerals (๐–๙) are written with the same Latin-style digit codes below.
| Digit | Thai numeral | Morse Code | Play |
|---|---|---|---|
| 0 | ๐ | −−−−− | |
| 1 | ๑ | ·−−−− | |
| 2 | ๒ | ··−−− | |
| 3 | ๓ | ···−− | |
| 4 | ๔ | ····− | |
| 5 | ๕ | ····· | |
| 6 | ๖ | −···· | |
| 7 | ๗ | −−··· | |
| 8 | ๘ | −−−·· | |
| 9 | ๙ | −−−−· |
Thai Morse Code — Punctuation
Punctuation also stayed on the international ITU-R M.1677-1 table in 1912, so these marks work identically alongside Thai text.
| Mark | Morse Code | Play |
|---|---|---|
| . (period) | ·−·−·− | |
| , (comma) | −−··−− | |
| ? (question mark) | ··−−·· | |
| ' (apostrophe) | ·−−−−· | |
| ! (exclamation) | −·−·−− | |
| / (slash) | −··−· | |
| ( (open paren) | −·−−· | |
| ) (close paren) | −·−−·− | |
| & (ampersand) | ·−··· | |
| : (colon) | −−−··· | |
| ; (semicolon) | −·−·−· | |
| = (equals) | −···− | |
| + (plus) | ·−·−· | |
| - (hyphen) | −····− | |
| " (quotation) | ·−··−· | |
| @ (at sign) | ·−−·−· |
Thai Morse Code — Complete Guide
What is Thai Morse Code?
Thai Morse code (รหัสมอร์สภาษาไทย) is the adaptation of International Morse code for the Thai language. Unlike alphabet-based systems, Thai uses a phonetic matching approach — each of the 44 Thai consonants is mapped to the closest equivalent Latin sound, then transmitted using the corresponding International Morse pattern. The system was formally standardized by a Thai government committee in 1912 and has remained in use by telegraph and amateur radio operators ever since.
The Thai Alphabet and Morse Encoding
The Thai alphabet is one of the most complex writing systems adapted to Morse code. It contains 44 consonants (พยัญชนะ), 32 vowels (สระ — appearing as 21 distinct symbols with short/long variants), 4 tone marks (วรรณยุกต์ — ไม้เอก ่, ไม้โท ้, ไม้ตรี ๊, ไม้จัตวา ๋), and various diacritics. Many Thai consonants share the same phonetic value — for example, ข, ฃ, ค, ฅ, and ฆ all represent the /kh/ sound, so they share the same Morse pattern (−·−····). Context within the Thai text disambiguates which consonant is intended.
Thai Amateur Radio Community
Thai is spoken by over 69 million people primarily in Thailand, with significant diaspora communities in the United States, Germany, and Australia. The Radio Amateur Society of Thailand (RAST — สมาคมวิทยุสมัครเล่นแห่งประเทศไทย) under the Royal Patronage of His Majesty the King coordinates amateur radio activities in Thailand under the HS and E2 callsign prefixes. RAST was founded in 1963 and maintains an active CW (Morse code) community with regular contests and training programs.
🔤 44 Consonants in Morse
Thai's 44 consonants are mapped phonetically to Latin equivalents. Since many consonants share sounds (5 for /kh/, 4 for /s/, etc.), they share Morse patterns — context within the Thai text provides disambiguation, similar to homophones in spoken language.
🌏 Thai Diaspora
Thai Morse is used by Thai-speaking amateur radio operators in communities worldwide, including Los Angeles (the largest Thai community outside Asia), Sydney, Berlin, and London. Thai restaurants and cultural centers often host amateur radio club meetings.
🏛️ ITU-R M.1677-1 Standard
Thai Morse code follows the ITU International Morse standard through phonetic matching. The National Broadcasting and Telecommunications Commission (NBTC — กสทช.) regulates amateur radio licensing in Thailand.
Common Thai Words in Morse Code
- สวัสดี (Sawasdee — Hello) = ส(S) + ว(W) + ั(-) + ส(S) + ด(D) + ี(-) →
... .-- .-..- ... -.. .. - รัก (Rak — Love) = ร(R) + ั(-) + ก(K) →
.-. .-..- -.- - ขอบคุณ (Khob khun — Thank you) = ข(KH) + อ(O) + บ(B) / ค(KH) + ุ(-) + ณ(N) →
-.-.... --- -... / -.-.... ..- -. - ประเทศไทย (Prathet Thai — Thailand) = ป(P) + ร(R) + ะ(-) + เ(-) + ท(TH) + ศ(S) / ไ(-) + ท(TH) + ย(Y) →
.--. .-. .- . -.... ... / .- -.... -.--
History of Morse Code in Thailand
Thailand (then Siam) established its first telegraph line in 1875 between Bangkok and Paknam (Samut Prakan), during the reign of King Chulalongkorn (Rama V — รัชกาลที่ 5). The king, a visionary modernizer who had traveled to Europe and witnessed telegraph technology firsthand, personally championed the introduction of the telegraph to Siam. The initial line spanned approximately 30 kilometers and was used primarily for government communications between the capital and the important coastal trading port.
By 1883, the telegraph network had expanded dramatically under the newly established Post and Telegraph Department (กรมไปรษณีย์โทรเลข), connecting Bangkok to major provincial centers including Chiang Mai in the north, Nakhon Ratchasima (Korat) in the northeast, and Songkhla in the south. The network spanned over 2,500 kilometers by the end of the 19th century. Major telegraph stations operated in Bangkok (at the Grand Palace and the Post and Telegraph Building on Charoen Krung Road), Ayutthaya, Phitsanulok, and Hat Yai.
Development of Thai Morse Conventions
Thai telegraph operators faced a significant challenge: how to transmit a complex script with 44 consonants and 32 vowels using the limited set of Morse patterns available. The solution — the phonetic matching system (ระบบเทียบเสียง) — was formally completed and announced on 1 November 1912 (B.E. 2455), during the reign of King Vajiravudh (Rama VI — รัชกาลที่ 6). A joint committee drawn from the Ministry of Defense, the Royal Railway Department, and the Telegraph Department was formed specifically because all three needed a single shared Thai signalling system. Each Thai consonant was assigned to the Latin letter whose sound most closely matched, and the corresponding International Morse pattern was reused — but because Thai has far more consonant letters than Latin has letters, the committee did not invent a unique code for every single letter. Where two or more Thai letters represented the exact same sound (ค ฅ ฆ for "kh", ด ฎ for "d", ส ศ ษ for "s", ท ธ ฑ ฒ for "th", among others), they were deliberately assigned one shared code. The finished standard defined roughly 30 consonant codes and 21 vowel/tone-mark codes — far fewer than the 44 consonant letters and 32 vowel forms in the full Thai script — while numbers and punctuation were left exactly as in the international table.
Vowels and tone marks presented additional complexity. Thai vowels can appear before, after, above, or below the consonant they modify. In Morse transmission, vowels are sent in the order they are read in standard Thai reading sequence. Tone marks — which are essential for meaning in Thai (a single syllable like มา can mean "come," "horse," or "dog" depending on tone) — are transmitted as separate symbols following the syllable, using specialized patterns assigned through the ITU standard.
Thai Morse During the Modernization Era
The telegraph played a crucial role in the modernization of Siam during the late 19th and early 20th centuries. King Chulalongkorn used the telegraph network to consolidate administrative control over outlying provinces, replacing the traditional system of semi-autonomous local rulers with centrally appointed governors who communicated with Bangkok via Morse. The telegraph also enabled rapid commercial communication, connecting rice traders in Bangkok with markets in Singapore, Hong Kong, and beyond.
During World War II (1941–1945), Thailand was occupied by Japanese forces and the telegraph network was integrated into Japanese military communications. Thai telegraph operators continued to use both Thai Morse and International Morse throughout the war, maintaining domestic communications despite the occupation. After the war, Thailand's telecommunications infrastructure was modernized with American assistance, and telegraph services gradually transitioned to telephone and later digital systems through the 1970s and 1980s.
RAST and the Thai CW Community
RAST (สมาคมวิทยุสมัครเล่นแห่งประเทศไทย — Radio Amateur Society of Thailand) was established in 1963 and operates under the royal patronage of the Thai monarch. The HS prefix (and E2 for additional allocations) identifies Thai amateur radio stations. RAST organizes annual field days, licensing examinations, and CW (Morse code) training programs. Thai amateur radio operators are active in international contests including the CQ World Wide DX Contest, ARRL International DX Contest, and regional SEANET Convention events.
Active amateur radio clubs operate in Bangkok (with the main RAST club station HS0AC at the RAST headquarters), Chiang Mai, Phuket, Pattaya, and Udon Thani. Thai CW operators are respected in the Southeast Asian amateur radio community for their technical skill and adherence to proper operating procedures. The annual Thailand CW Party brings together operators from across the country for a weekend of Morse code competition and camaraderie.
Thailand has also produced several notable DXpeditions to rare amateur radio entities. Thai operators have participated in expeditions to remote islands in the Andaman Sea and Gulf of Thailand, often using CW as the primary mode for making contacts with stations worldwide. These operations have helped put Thailand on the map as a serious contributor to the global amateur radio community.
Thai Vowels and Tone Marks in Morse
The Thai writing system places vowels in various positions relative to consonants: before (เ, แ, ไ, ใ), after (า, ะ), above (ิ, ี, ึ, ื), below (ุ, ู), and combinations thereof (เ-ีย, เ-ือ). In Morse transmission, all elements are sent in standard Thai reading order — left to right, ignoring the spatial position. For example, the word เรียน (rian — study) is read as เ + ร + ี + ย + น (left to right sequence), and transmitted in that order in Morse.
Tone marks are critical in Thai as they distinguish meaning between otherwise identical syllables. The four tone marks are: ่ (ไม้เอก — mai ek, low tone), ้ (ไม้โท — mai tho, falling tone), ๊ (ไม้ตรี — mai tri, high tone), and ๋ (ไม้จัตวา — mai chattawa, rising tone). Each tone mark has its own Morse pattern and is sent immediately after the syllable it modifies. This system ensures that the tonal information — essential for correct meaning in Thai — is preserved in Morse transmission.
Learning Thai Morse Code
Learning Thai Morse code presents unique challenges and advantages. The phonetic mapping means that Thai learners who already know International Morse code can transfer their knowledge — they only need to learn which Thai consonants correspond to which Latin sounds. However, the large inventory of 44 consonants (compared to 26 Latin letters) requires significant memorization, especially since multiple Thai consonants map to the same Morse pattern.
The recommended approach is to learn consonants by sound groups rather than alphabetical order. Start with the high-frequency consonants that have unique phonetic mappings: ก (K, −·−), ด (D, −··), ม (M, −−), น (N, −·), ร (R, ·−·). Practice with common greetings like สวัสดี (Sawasdee) and ขอบคุณ (Khob khun). Use our translator's audio playback feature to hear Thai text in Morse and train your ear to recognize the distinct rhythm of Thai Morse patterns before attempting live on-air reception.
Thai learners should also practice distinguishing the tone marks in Morse, as these carry essential meaning. A helpful exercise is to practice with tone-contrasting word pairs like ป่า (pa — forest, low tone) vs ป้า (pa — aunt, falling tone) to internalize how tone marks change the Morse sequence.