Korean uses two parallel number systems, and which one you use depends on what you're counting. It sounds odd but the rule is simple. Here's the split, plus a tool that gives you both readings for any number.
- 1
Sino-Korean — for money, dates, and minutes
Based on Chinese-origin roots (일 이 삼 사 오…), Sino-Korean is used for prices, phone numbers, dates, months, minutes, and counting above the dozens. This is the one you'll read on price tags constantly.
- 2
Native Korean — for hours, age, and counting objects
The native set (하나 둘 셋 넷 다섯…) is used for the hour of the clock, your age, and counting people and things — but only up to 99. Above that, Sino takes over.
- 3
Know the counter-form shortcuts
Before a counter word, the first few native numbers shorten: 하나→한, 둘→두, 셋→세, 넷→네, 스물→스무 (e.g. 'two coffees' uses 두). Sino numbers don't change shape.
- 4
Generate both readings for any number
Type a number into the tool below to see its Sino and (where it applies) native Korean reading side by side. Reading prices and telling time get much easier with practice.
Open the number tool →
Try it
만오천
native numbers only go up to 99
Tip: prices and minutes use Sino-Korean; the hour of the clock, your age, and counting objects use native Korean (up to 99).
Common questions
Which system do I use for won prices?+
Which system tells the time?+
Sources & official links
- King Sejong Institute ↗checked 2026-06-01
Fares, schedules, and app details change. Always confirm on the official site before you rely on anything time- or money-critical.