Korean Spacing Rules (띄어쓰기) Without the Headache

Ask any Korean learner what trips them up most and somewhere near the top of the list is 띄어쓰기 (ttieoseugi), Korean word spacing. It feels like it should be simple, just put spaces between words, but Korean has enough rules and exceptions that even native speakers argue about it and get it wrong. The reassuring news is that you do not need to master every edge case to write clear, correct Korean. You need a handful of core rules, an awareness of why spacing matters, and a quick way to check yourself. This guide covers all three.

Why spacing matters more than you think

In English, bad spacing is mostly a cosmetic problem. In Korean, wrong spacing can genuinely change what a sentence means, because Korean strings syllables together and the gaps tell the reader where one word ends and the next begins. The most famous example in Korean is a sentence that, spaced one way, means "Let's eat, Dad" and spaced another way means something gruesome about eating your father. The gap is the difference.

Beyond the dramatic cases, spacing affects readability and credibility. Text with sloppy spacing is harder to read and signals to a native reader that the writer is not fluent, the same way run-on text with no spaces would look in English. On the TOPIK exam, spacing is part of how writing is scored. So it is worth getting the basics right.

Rule 1: Particles attach, words separate

This is the single most important rule, and it is the one English speakers break most often. In Korean, every word should be separated from the next by a space, but particles (those little markers like 은/는, 이/가, 을/를, 에, 에서) attach directly to the word in front of them with no space.

So you write 저는 학교에 가요 ("I go to school"), where:

• 저 (I) + 는 attach together as 저는,
• 학교 (school) + 에 attach together as 학교에,
• and there is a space between 저는, 학교에, and 가요.

The instinct from English is to put a space before the particle, like 저 는, because it feels like a separate little word. Resist that. Particles glue onto the noun in front of them. Get this one rule down and you have fixed the majority of beginner spacing errors.

Rule 2: Each word stands on its own

Korean separates words from one another. Nouns, verbs, adjectives, and adverbs each get their own space. 새 책을 샀어요 ("I bought a new book") spaces 새 (new), 책을 (book + object particle), and 샀어요 (bought) as three units. The descriptive word 새 does not fuse onto 책.

This sounds obvious, but learners often run things together because spoken Korean blurs the boundaries. When you write, slow down and ask: is this a separate word, or a particle? Separate words get a space; particles do not.

Rule 3: Numbers and counters have their own logic

Numbers and the words that count things (counters) follow their own conventions. You generally put a space between a number and its counter: 사과 세 개 ("three apples"), where 세 (three) and 개 (the counter for objects) are spaced. Units of measurement and some set expressions vary, and this is one area where even natives are inconsistent, so do not stress about perfection here. Just be aware that numbers are their own little category with their own spacing habits.

The exceptions are real, and that is okay

Here is the honest part: Korean spacing has many exceptions, and some cases are genuinely ambiguous even to educated native speakers. Compound nouns can be written with or without a space depending on whether they have fused into a single accepted word. Auxiliary verbs sometimes allow an optional space. Officially, the National Institute of Korean Language publishes the standard, and even Korean professionals keep reference guides handy.

The practical takeaway is not to chase every rule. Nail the big three (particles attach, words separate, numbers are their own thing) and you will be correct the vast majority of the time. For the genuinely ambiguous cases, the smartest move is not to memorize a hundred exceptions, but to check your specific sentence against a tool that already knows the standard.

How to stop second-guessing your spacing

Spacing is one of those things where you can stare at a sentence and have no idea whether the gap belongs there. That uncertainty is exhausting, and it slows down your writing because you keep stopping to wonder. The fix is to write naturally, get the words down, and then run the whole thing through a Korean spacing and spell checker.

A good checker does the tedious part for you: it inserts the spaces that are missing, removes the ones that should not be there, fixes any misspellings along the way, and tells you in English what it changed so you slowly learn the patterns instead of just accepting corrections blindly. Over time you will internalize the rules from seeing your own mistakes corrected, which sticks far better than reading a rulebook.

Do not let spacing be the thing that makes your Korean look unfinished. Write your sentence the way it feels right, paste it into the app, and let it close the gaps and confirm your spacing is correct before you hit send.