40 in Korean
Nearby Korean Numbers
40 in Other Languages
About 40 in Korean
When speaking Korean, 40 is expressed as 사십 (saship). The ordinal form — used for rankings, dates, and sequences — is 마흔째 (maheunjae). The native counting form is 마흔 (maheun).
The number 40 is even. You'll encounter 40 in Korean in many practical contexts: shopping, transportation, appointments, and everyday small talk.
For anyone learning Korean, numbers like 40 are essential early targets. They appear in tasks as common as buying a coffee, reading a menu, catching a bus, or asking someone their age.
Learning Numbers in Korean
What makes Korean numbers challenging
Two complete number systems (Sino-Korean and native Korean) must be used in the right contexts — using the wrong one sounds unnatural. Native Korean numbers change form when combined with counters (hana becomes han, dul becomes du, set becomes se). Like Japanese, Korean groups large numbers by 10,000 (만/man), requiring English speakers to mentally regroup. Sino-Korean numbers are short monosyllables (il, i, sam) that can blur together at speed. Knowing which system to use (Sino for dates/money/phone, native for counting/age) is essential.
Tips for learning Korean numbers
Learn Sino-Korean numbers first — they are simpler, shorter, and cover phone numbers, dates, prices, and addresses. Then learn native Korean 1-99 for counting objects and telling age. Practice the man (10,000) grouping system with Korean won amounts (prices are usually in thousands or ten-thousands). For phone numbers, Sino-Korean is always used. KakaoTalk conversations often include numbers, making them good practice material.