Skip to content
Discover · Beginner onward

Korean Numbers Converter & Practice

Convert numbers into Korean for counting, prices, dates, time and phone digits. Compare Sino-Korean and native forms, then practice common counter changes.

  1. Choose what you are counting.

  2. Enter a number, date or time.

  3. Compare the systems and try the practice.

만 이천삼백사십오

Two systems, side by side

NumberSino-KoreanNative KoreanBefore 개
1일하나한 개
2이둘두 개
3삼셋세 개
4사넷네 개
5오다섯다섯 개
6육여섯여섯 개
7칠일곱일곱 개
8팔여덟여덟 개
9구아홉아홉 개
10십열열 개
20이십스물스무 개
30삼십서른서른 개
40사십마흔마흔 개
50오십쉰쉰 개
60육십예순예순 개
70칠십일흔일흔 개
80팔십여든여든 개
90구십아흔아흔 개
99구십구아흔아홉아흔아홉 개

Practice choosing the right system

Your practice1 / 8

3 objects

Native counting is limited to 1–99 here; zero and larger quantities generally use Sino-Korean. Phone digits use 공 for zero. These readings show spelling, not a phonetic transcription.

A little understanding goes a long way

Make sense of what you’re practicing

01

Choose the context first

Prices, calendar dates and minutes use Sino-Korean numbers. Many everyday counts use native numbers with counters: 세 개 (three things), 두 명 (two people), 네 잔 (four cups). Age with 살 uses native forms; age with 세 uses Sino-Korean.

02

Hours and minutes use different systems

2:30 is 두 시 삼십 분. The hour uses a native number before 시; minutes use Sino-Korean before 분. The time converter reads a 24-hour input as 오전 or 오후 with a 12-hour clock.

03

Watch the special forms

하나, 둘, 셋, 넷 become 한, 두, 세, 네 before common counters. 스물 becomes 스무 when used alone before a counter, but 21 is 스물한. June is 유월 and October is 시월.