Fix My Korean: Grammar Check

Fix My Korean checks your Korean sentences and shows you why. Paste or type Korean, then tap Check. Mistakes are underlined in place: red when something is wrong, orange when it could be polished. Fix them one card at a time. Each card shows what is wrong, the correction, a short English explanation, and a link to the National Institute of Korean Language (국립국어원) reference behind the rule. When one mistake has several valid fixes, the card lets you choose. Each option names the situation it fits, so you learn the difference instead of guessing. Set your goal and the checker adapts. Pick 반말, 해요체, 합쇼체 or 문어체 and endings that miss your target are flagged. Leave it on Auto and it keeps your tone consistent. • Answers with sources: every diagnosis links to 국립국어원 references • Politeness-aware: speech level is treated as grammar, not style • One suggestion at a time, built to learn from • History stays on your device. No account, no setup. Made for English speakers learning Korean.