Free, no sign-up
No account, no app, no paywall. Open a tool and use it - that's the whole flow.
About K-Calculator
Simple Korean calculators - no sign-up, no clutter.
Korea runs on a few numbers outsiders never learn: an age that jumps the day you're born, a birthday that moves every year because it's on the lunar calendar, and an animal sign that people bring up within five minutes of meeting you. K-Calculator works those out for you in English, in one place, in about a second.
29Calculators
❎Sign-up
100%Free
How we build it
Six rules we hold ourselves to.
Built on official sources
Korean age rules, the lunar calendar, and zodiac cycles follow Korean law and the official Korean Astronomy and Space Science Institute calendar data, not folk shortcuts.
Your input stays with you
Birthdays and amounts you type are worked out inside your browser. We never ask for your name, and we don't store anything that identifies you.
For life in Korea, in English
Written for exchange students, expats, travelers, and K-drama and K-pop fans who keep running into Korean-only calculators.
Made for your phone
Everything fits a phone screen first, and works just as well on a laptop. Nothing to install.
Shaped by your feedback
Ratings and comments you leave decide what we build and fix next. Tell us what's missing.
What can you do here?
Pick a tool to get started.
Taxes & Pay
Korea VAT (10%)
→Split any Korean price into the supply value and the 10% on top
Part-time Pay in Korea
→Hourly pay with the weekly holiday allowance Korea adds on top
Korea Salary After-Tax Calculator
→What actually reaches your account after the four major public insurances and income tax
Korea Four Major Public Insurances
→Your share and your employer's share, side by side
Severance Pay in Korea
→What one year of work is worth when you leave a Korean job
Korean Unemployment Benefits
→How much you get, for how long, and whether your visa is covered
Early Reemployment Allowance
→The bonus for finding work early, and who is left out of it
Korea 3.3% Withholding for Freelancers
→What is held back from a freelance invoice, and how you get it back
Korea Capital Gains Tax on Stocks
→What Korea taxes when you sell shares, and when it does not
Korean Lotto Tax
→What is withheld from a Korean lottery prize before you see it
Korea Tax Refund
→What comes back on your shopping, and whether the store, a downtown counter or the airport pays it
Korea Pension Refund
→Whether you can claim your National Pension back when you leave, and how much
Dates & Time
Korean Business Days
→Count working days the way Korean deadlines do, holidays included
Date Calculator (D-Day)
→Days between two dates, and the milestones Korea counts to
Korean Age Calculator
→Korean age, international age, and your zodiac animal from one birthday
Korean Lunar Birthday Converter
→Find your lunar birthday - the second birthday many Koreans celebrate
Housing
Generators
Handy Tools
Just for Fun
Snack Tests
→One-minute quizzes with a result you can share as an image
Korea Lotto 6/45 Number Generator
→Six random numbers, drawn just like Korea's Saturday 6/45 draw
Korean Food Picker
→Can't decide what to eat? Let it pick from 300 dishes
Korean Zodiac Compatibility
→How two birth-year animals get along, the way Koreans read it
Korean Name Compatibility Test
→Type two names in English or Hangul and let the stroke counts score the pair
Daily Horoscope
→Today's reading for your Korean zodiac animal, the one your birth year falls on
Free 3-Card Tarot Reading
→Pull three cards for love, work or whatever is on your mind
Explore Korea
Korea F-2-7 Visa Points
→Score a residence visa application against the 80 points it needs
Korea Population by Region
→Population and age structure for every city and district
Foreign Residents in Korea
→How many foreign residents live in each city and district, by type and age
Regional migration statistics
→GData statistics on moves in and out of each city and district
Regional price statistics
→GData statistics comparing consumer prices by region
Korean Celebrity Birthdays
→Birthdays, ages and zodiac signs of K-pop idols and Korean actors
Age by Birth Year
→Pick a year to see Korean age, zodiac animal, and what happened in Korea
Korean Zodiac (12 Animals)
→Which of the 12 animals is yours, and what it says about you
Star Signs
→Find your sign by birthday, with dates and traits
Korean Public Holidays
→When Korea closes, and why the dates move every year
Korea Minimum Wage by Year
→The hourly floor every worker in Korea is owed, year by year