- Thai has five tones: mid, low, falling, high and rising. Change the tone and you change the word: มาmaa is "come", ม้าmáa is "horse" and หมาmǎa is "dog".
- The script spells the tone. Three things decide it: the class of the first consonant, whether the syllable is live or dead, and the tone mark.
- A tone mark isn't a tone. Mai tho ( ้) makes ข้าวkâao falling but ม้าmáa high.
- A few everyday words are said with a different tone from their spelling, like the question word ไหม.
- Hear before you say. Short, frequent listening to many voices trains your ear faster than long sessions with one.
The short answer
In Thai, the pitch of a syllable is part of the word, the way its vowel is. English uses pitch for questions, surprise and emphasis; Thai uses it to tell words apart, and asks questions with words like ไหม instead.
The good news is that Thai writes its tones down. Once you can read the script, the spelling of almost any word tells you its tone. So learn in this order: get used to hearing the five tones from day one, learn the tone rules alongside the script, and find someone who corrects your tones when you speak. Our guide to learning Thai puts tones in the context of the whole path.
The five tones
Press play to hear each tone in a real word from the ThaiFlip dictionary.
The pitch shapes are simplified. Real tones vary with the speaker, the speed and the words around them.
Learner romanization marks the tones with accents: none for mid (maa), a grave for low (màa), a circumflex for falling (mâa), an acute for high (máa) and a caron for rising (mǎa). The official romanization you see on road signs doesn't mark tones at all, which is one reason to learn the script early.
Hear the difference
Words that differ only in tone are the best ear training there is. Play each set a few times, then cover the meanings and try to name the word from the sound.
| Word | Tone | Meaning |
|---|---|---|
| ข้าวkâao | falling, long vowel | rice |
| ขาวkǎao | rising, long vowel | white |
| เข้าkâo | falling, short vowel | to enter |
| เข่าkào | low, short vowel | knee |
| เขาkǎo | rising in spelling, often high in speech | he; she |
Then try the classic tone drill, ไม้ใหม่ไม่ไหม้ใช่ไหม, "New wood doesn't burn, does it?". It's six syllables that all sound like "mai" to a beginner:
| Word | Tone | Meaning |
|---|---|---|
| ไม้máai | high | wood |
| ใหม่mài | low | new |
| ไม่mâi | falling | not |
| ไหม้mâi | falling | to burn |
| ใช่châi | falling | yes; right |
| ไหมmǎi | rising in spelling, usually high in speech | question particle |
Why tones are hard for English speakers
English speakers use pitch all the time, just not to tell words apart. A rising pitch can turn "really" into a question; it never turns it into a different word. So the ear learns to treat pitch as tone of voice, and Thai asks it to do the opposite.
Three things make it harder in practice:
- Tones move in real speech. In fast, connected speech tones are shorter and shaped by their neighbours, so they rarely sound like the textbook versions. The high tone in particular is often said with a rise at the end.
- Vowel length matters too. เข้าkâo (enter) and ข้าวkâao (rice) share a tone and differ only in vowel length.
- You can't hear your own mistakes yet. Until your ear is trained, a wrong tone sounds fine to you. That's why someone who corrects you matters.
The encouraging part: tone perception is trainable. In a classic study, American learners who spent eight sessions over two weeks identifying Mandarin tones in words improved by about 21 percentage points, could hear tones in new words and voices, and kept the gain six months later. A 2025 review of 79 pronunciation-training studies found some of the largest gains of all for tones. Short, regular practice works; there's no need to wait until you "have an ear for it".
How the script spells tones
Thai spelling encodes tone with three ingredients. Learn them in this order, ideally while you learn the letters.
1. The class of the first consonant
Every consonant belongs to one of three classes. The class belongs to the letter, not the sound: ค and ข are both kh, but ค is low and ข is high. In a syllable, the class of the first consonant is the one that counts.
| Class | Letters | Worth knowing |
|---|---|---|
| Mid class 9 | ก จ ด ต ฎ ฏ บ ป อ | Can take all four tone marks. |
| High class 11 | ข ฃ ฉ ฐ ถ ผ ฝ ศ ษ ส ห | Unmarked live syllables are rising: ขา, สอง. |
| Low class 24 | ค ฅ ฆ ง ช ซ ฌ ญ ฑ ฒ ณ ท ธ น พ ฟ ภ ม ย ร ล ว ฬ ฮ | The largest class. Ten of them (ง ญ ณ น ม ย ร ล ว ฬ) have no high-class partner. |
The 44 consonants include ฃ and ฅ, which are no longer used. A handy trick for the mid class: each word of ไก่จิกเด็กตายบนปากโอ่ง ("the chicken pecked the child to death on the rim of the jar") starts with a different mid-class letter, covering seven of the nine.
2. Live or dead syllable
A live syllable ends in a long vowel or in m, n, ng, w or y: มาmaa, คนkon. The vowels written ำ, ไ, ใ and เ-า count as live too, even though they're short. A dead syllable ends in a short vowel or in a k, p or t sound: นะná, รักrák, มากmâak. You can hear the difference: a dead syllable stops abruptly.
3. The tone mark
Four marks sit above the first consonant: mai ek ( ่), mai tho ( ้), mai trii ( ๊) and mai jattawa ( ๋). Most words use the first two or none. In standard spelling, mai trii and mai jattawa appear only on mid-class consonants, as in โต๊ะdtó (table) and ตั๋วdtǔua (ticket).
Try it: the tone decoder
Set the three ingredients and the decoder gives you the tone, the reason and a real word to listen to.
Tone decoder
A high-class consonant with mai tho (ไม้โท). With a tone mark, live or dead doesn't change the tone.
The full tone rules
Everything above in one table. Use it as a reference while you read; you'll stop needing it with practice.
| Syllable | Mid class | High class | Low class |
|---|---|---|---|
| Live, no mark | Mid | Rising | Mid |
| Dead, short vowel, no mark | Low | Low | High |
| Dead, long vowel, no mark | Low | Low | Falling |
| Mai ek ( ่) | Low | Low | Falling |
| Mai tho ( ้) | Falling | Falling | High |
| Mai trii ( ๊) | High | Not used | Not used |
| Mai jattawa ( ๋) | Rising | Not used | Not used |
Exceptions worth knowing
A silent ห before a low consonant
The ten low consonants without a high-class partner (ง ญ ณ น ม ย ร ล ว ฬ) borrow one: write a silent ห in front and the syllable follows high-class rules. That's why หมาmǎa is rising, and หนึ่งnʉ̀ng (one) is low.
A silent อ in four words
In just four words, a silent อ before ย makes the syllable follow mid-class rules: อย่า (don't), อยู่ (to be at), อย่าง (kind, way) and อยาก (to want). So อยู่yùu is low, not falling.
Spelled one way, said another
A few very common words are usually said with a different tone from their spelling. The question particle ไหมmǎi is spelled rising but usually said high, and informal writing often spells it มั้ย or มั๊ย to match. เขาkǎo (he, she) and ฉันchǎn (I) are often said with a high tone too, and so is the first syllable of หนังสือ (book). Our dictionary gives the spelled tone, so listen for the spoken one in real conversations.
How to practise tones
- Listen to pairs every day. Five minutes with sets like the ones above, in as many voices as you can find, beats an hour once a week.
- Learn every word with its tone. Use the script, or romanization that marks tones, so you never store a word without one.
- Shadow short lines. Play a line, pause, say it back, and play it again. Our Chrome extension replays any subtitle line of a Thai YouTube video with one key.
- Record yourself. Compare your recording with the original. It's the quickest way to hear your own mistakes.
- Get corrected. A teacher or tutor who stops you on wrong tones is worth more than any rule table. See how to learn Thai for schools, tutors and what they cost.
Hear every word you learn.
ThaiFlip has a recording for every word and example sentence, with the tone marked in the transliteration, so you learn each word with its tone from the start.
Frequently asked questions
How many tones does Thai have?
Five: mid, low, falling, high and rising. Every syllable has one, and changing it changes the word: มา (maa, mid) means come, ม้า (máa, high) means horse and หมา (mǎa, rising) means dog.
What are the names of the Thai tones?
In Thai: สามัญ (mid), เอก (low), โท (falling), ตรี (high) and จัตวา (rising). The names เอก and โท are also the names of the first two tone marks, but a mark doesn't always give the tone it's named after.
How do you know the tone of a Thai word?
From the spelling. Three things decide it: the class of the first consonant (mid, high or low), whether the syllable is live or dead, and the tone mark if there is one. A handful of common words are said with a different tone from the one they're written with.
What are the four Thai tone marks?
Mai ek ( ่), mai tho ( ้), mai trii ( ๊) and mai jattawa ( ๋). In standard spelling, mai trii and mai jattawa appear only on mid-class consonants. The same mark can give different tones: mai tho makes ข้าว falling but ม้า high.
What is a live and a dead syllable in Thai?
A live syllable ends in a long vowel, in m, n, ng, w or y, or in the vowels ำ, ไ, ใ or เ-า. A dead syllable ends in a short vowel or in a k, p or t sound. The difference only matters when there's no tone mark.
Are Thai tones hard to learn?
Hearing them in fast speech is the hard part, especially for speakers of non-tonal languages like English. The rules for reading tones take a few weeks. Perception improves with practice: in one study, eight listening sessions over two weeks improved learners' tone identification by about 21 percentage points.
Should I learn the tone rules before speaking?
No. Learn to hear and copy tones from the first day, and learn the rules alongside the script. The rules tell you how a written word sounds; they don't train your ear.
Why do people say ไหม with a high tone?
Its spelling gives a rising tone, but in everyday speech the question particle ไหม is usually said with a high tone, and is sometimes written มั้ย or มั๊ย to show that. เขา (he, she) and ฉัน (I) are often said with a high tone too.
Does romanization show Thai tones?
Only some systems do. Learner romanization often marks tones with accents: none for mid, grave for low (màa), circumflex for falling (mâa), acute for high (máa) and caron for rising (mǎa). The official system on road signs marks no tones at all.
Audio and example words come from the ThaiFlip dictionary. Spotted a mistake? Tell us and we'll check it.
