How to Say "How Are You?" in Thai

To ask "how are you?" in Thai, say สบายดีไหม (sà-baai-dii mǎi) — literally "are you well?" A man makes it polite with สบายดีไหมครับ (sà-baai-dii mǎi khráp) and a woman with สบายดีไหมคะ (sà-baai-dii mǎi khá). The standard answer is the same words minus the question particle: สบายดี (sà-baai-dii), "I'm fine."

Unlike the wide-open English "how are you?", the Thai version asks a specific yes-or-no question — are you well? — so the natural reply is to confirm it and lob the question back.

Why it's "are you well?", not "how are you?"

English "how are you?" is genuinely open: you could answer "tired," "busy," "great." Thai narrows it down. สบาย (sà-baai) means "comfortable / well," ดี (dii) means "good," and ไหม (mǎi) turns the statement into a question. Put together, สบายดีไหม asks whether you are well — and the expected response is to agree, สบายดี, the way an English speaker reflexively says "fine, thanks." It's small talk, not an invitation to unload your week.

That makes it one of the easiest real conversations to hold from day one, because the question and the answer share the same two words. If you've already worked through saying hello in Thai, you've met สบายดีไหม in passing; here it gets the full treatment, with the replies and the particle trap that catches almost everyone.

The reply: สบายดี and its neighbours

Nine times out of ten the answer is just สบายดี (sà-baai-dii) — "I'm fine" — with the polite particle: a man says สบายดีครับ (sà-baai-dii khráp), a woman สบายดีค่ะ (sà-baai-dii khâ). Then it's good manners to return the question with แล้วคุณล่ะ (láew khun lâ), "and you?"

If you're honestly not at your best, you have gentler options. ไม่ค่อยสบาย (mâi khâawy sà-baai) means "not so well" — useful when you're under the weather. เรื่อย ๆ (rʉ̂ay rʉ̂ay) is a breezy "so-so, same as usual." Neither is a complaint; Thai conversation tends to keep things light, and a small smile usually accompanies even the "not great" answers.

Asking it right: ครับ, คะ, and ค่ะ

Here is the part worth slowing down for. Thai politeness particles change with the speaker's gender, not the listener's — men say ครับ (khráp), women say a kha-shaped particle — and these are the same particles you already use to say thank you. But for women there's a twist that trips up nearly every learner: the particle's tone changes depending on whether you're asking or answering.

• Asking a question, a woman uses คะ (khá) — high tone: สบายดีไหมคะ.
• Making a statement or reply, she uses ค่ะ (khâ) — falling tone: สบายดีค่ะ.

Men get off easy: ครับ (khráp) works for both. The most common mistake I see in beginner classes is a woman answering with the question particle — "สบายดีคะ" with the bright high คะ — which to a Thai ear sounds oddly like she's still asking herself whether she's fine. It's a tiny tone flip, but it's the difference between sounding polished and sounding like you're reading off a phrasebook. Because so much rides on that contour, it's worth drilling against the Paiboon tone marks above each flashcard until your ear catches it automatically.

What Thais actually say to friends

สบายดีไหม is correct, polite, and always safe — but among friends it can sound a touch formal, the way "how do you do?" does in English. In casual settings you'll hear เป็นไงบ้าง (bpen ngai bâang), a relaxed "how's it going?" And in the warmest, most Thai move of all, people who know each other often skip the greeting entirely and ask กินข้าวหรือยัง (gin khâao rʉ̌ʉ yang) — "have you eaten yet?"

That last one isn't really about food. It's phatic, the same social glue as "how are you," and a smiling กินแล้ว ("already eaten") or ยัง ("not yet") closes the loop. I first heard it from a landlady in Chiang Mai who asked it every single afternoon; it took me an embarrassingly long week to realise she wasn't offering me lunch. You'll meet the same opener in our guide to good morning in Thai, where it does double duty as a daily check-in.

The mistakes to skip

Three slips recur. First, the คะ / ค่ะ tone flip above — ask with คะ, answer with ค่ะ. Second, flattening สบาย — it's sà-baai, a quick low "sà" gliding into a level "baai," and letting it sag into a flat "sabai" is a classic giveaway in a language where tone carries meaning. Third, treating it like the English open question and launching into a paragraph about your day; สบายดีไหม wants a สบายดี, a return question, and a smile — keep it light.

Master those and you've got a complete two-line exchange that works with a market vendor, a new colleague, or your partner's parents. The deck above sits naturally beside the rest of our essential Thai phrases — study it in both directions, asking สบายดีไหมคะ and answering สบายดีค่ะ, and within a few days the whole back-and-forth will come out without a thought.