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KEMI Tools

Korean Spell Checker

For learners of Korean: check Korean text against 939 rules for the most common spelling, word-spacing and loanword mistakes. Mistakes are underlined, and each card shows the correct form with a short explanation based on the Korean Orthography and Standard Language Rules. It is rule-based, not a grammar checker, so mistakes outside the rule list are not detected.

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How to use

  1. Paste or type Korean text. It is checked as you type.
  2. Red underline = certain, yellow = check. Hover a card to highlight its spot; click the wrong form to select it in the text.
  3. Use Fix / Fix all, then Copy text. Undo reverts a fix; Ignore rule hides a rule you used on purpose.

Top 20 common Korean spelling mistakes

WrongCorrectWhy
되요돼요short for 되어요
됬다됐다됬 is not a valid syllable
안되요안 돼요space after 안; 되어요 → 돼요
몇일며칠always 며칠
웬지왠지short for 왜인지
왠일웬일웬 = 'what kind of'
금새금세short for 금시에
어의없다어이없다from 어이
오랫만에오랜만에short for 오래간만
일일히일일이-이 after a doubled word
깨끗히깨끗이-이 after ㅅ
설겆이설거지설겆다 is not a word
희안하다희한하다Hanja 稀罕
역활역할Hanja 割
할께요할게요spelled 게 though it sounds 께
할려고하려고하 + 려고
어떻해어떡해short for 어떻게 해
병이 낳았다병이 나았다낫다 = recover, 낳다 = give birth
귀뜸귀띔from 귀에 띄우다
할수있다할 수 있다bound noun 수 is spaced

되 vs 돼

돼 is the contraction of 되어 (Korean Orthography, Art. 35). Put 되어 in that spot: if it sounds right, write 돼 (안 돼요 = 안 되어요); if not, write 되 (되고, 되는). Shortcut: if 하 fits, use 되; if 해 fits, use 돼. 됬 does not exist — the past form is 됐다.

안 vs 않

안 (short for 아니) goes before a verb and is spaced: 안 먹다, 안 돼요. 않 (short for 아니하) only appears after -지: 먹지 않다.

What this checker cannot do

It does not parse grammar. Particle choice, honorifics, sentence agreement and words outside its rule list are not checked, and only clear-cut spacing rules are included. Rules follow the National Institute of Korean Language’s Orthography, Standard Language Rules and Loanword Orthography; confirm important text in the Standard Korean Dictionary.

FAQ

Does it catch every mistake?

No. It matches your text against 939 rules for frequently misspelled words, word spacing and loanword spelling. It does not understand grammar or context, so particle choice, sentence agreement and words outside the list are not checked.

What do 'Certain' and 'Check' mean?

'Certain' items are wrong in any context (됬다, 몇일). 'Check' items are usually wrong but can be correct in some contexts, so 'Fix all' only changes 'Certain' items; review the others one by one.

How do I tell 되 from 돼?

Put 되어 in that spot. If it works, write 돼 (돼요 = 되어요); if not, write 되 (되고, 되는). A quick trick: if 하 fits, use 되; if 해 fits, use 돼.

Is my text saved?

No. Your text is not saved and disappears when you close or reload the page. Use 'Copy text' to keep the corrected version.

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