Date Calculator

When to use it

• Use it to see how many days are left until a contract expiry or exam date (D-Day) at a glance.

• It calculates your exact age under Korea's unified full-age law (in effect since June 2023), birthday included.

• Days employed since your start date, or working days excluding weekends — no sign-up needed.

Frequently asked questions

How is the full age calculated?

It follows Korea's unified full-age law, in effect since June 28, 2023. Your age goes up by one on your birthday, shown as a single full-age figure.

Are public holidays excluded from working days?

Only weekends (Saturday and Sunday) are excluded. Public holidays change every year, so they are not counted — the screen says so as well.

What does "include both ends" mean in the date difference?

It's the Korean administrative way of counting both the start and end dates as one day each. January 1 to January 3 is normally 2 days, but 3 days with both ends included.