쇠뿔도 단김에 빼랬다 (Soeppuldo dangime ppaeraetda)

Meaning: Once you decide to do something, do it right away.

Literally: Pull out the ox horn while it's still hot

Example: “결심했으면 오늘 바로 등록해. 쇠뿔도 단김에 빼랬다.” — If you've decided, sign up today: strike while the iron is hot.

Equivalents in English, French, Spanish, Japanese, German, and 6 more languages

English: Strike while the iron is hot
French: Il faut battre le fer tant qu'il est chaud (literally: One must strike the iron while it is hot)
Spanish: A hierro caliente, batir de repente (literally: To hot iron, strike suddenly)
Japanese: 鉄は熱いうちに打て (Tetsu wa atsui uchi ni ute) (literally: Strike the iron while it is hot)
German: Man muss das Eisen schmieden, solange es heiß ist (literally: One must forge the iron while it is hot)
Italian: Batti il ferro quando è caldo (literally: Strike while the iron is hot)
Dutch: Men moet het ijzer smeden als het heet is (literally: One must forge the iron while it is hot)
Russian: Куй железо, пока горячо (Kuy zhelezo, poka goryacho) (literally: Forge the iron while it's hot)
Polish: Kuj żelazo, póki gorące (literally: Forge the iron while it's hot)
Chinese: 趁热打铁 (Chèn rè dǎ tiě) (literally: Strike the iron while it's hot)
Turkish: Demir tavında dövülür (literally: Iron is forged at the right heat)