Everyday Calculators
Checking your pay stub, deciding whether to buy or rent, timing an investment — instead of searching for a different calculator every time, we've put the money math you run into day to day in one place. No sign-up, no installation: everything runs in your browser, and the range of what we cover keeps growing.
Korean Age Calculator
Enter a birth date to calculate Korean international age (man-nai), year age, and counting age all at once. Man-nai has been the legal standard age in Korea since 2023.
Salary & BenefitsKorea Salary Take-Home Pay Calculator
Enter your annual salary and number of dependents to estimate your monthly and annual take-home pay after Korea’s 4 major social insurances and income tax.
Salary & BenefitsKorea Severance Pay Calculator
Enter your hire date, resignation date, and last 3 months of pay to estimate your average wage and expected severance pay under Korean law.
Salary & BenefitsKorea Weekly Holiday Pay Calculator
Enter your hourly wage and weekly scheduled work hours to calculate Korea’s weekly paid holiday allowance (ju-hyu-su-dang) — including for part-time workers.
Salary & BenefitsKorea Unemployment Benefit Calculator
Enter your separation date, last 3 months of pay, age, and employment insurance enrollment period to estimate your Korean unemployment benefit (job-seeking benefit) amount and payment days.
Salary & BenefitsKorea Annual Leave Calculator
Enter your hire date to calculate accrued annual paid leave days under Korean labor law. Add your daily ordinary wage to also see your annual leave allowance.
Real EstateLoan Interest & Repayment Calculator
Enter loan principal, annual interest rate, and term to calculate monthly payments, total interest, total repayment, and a full amortization schedule for equal payment, equal principal, or bullet repayment methods.
Real EstateKorea Property Acquisition Tax Calculator
Enter a purchase price to estimate Korea’s acquisition tax, local education tax, and special rural development tax — for both houses (including the 8%/12% multi-home surtax rates) and officetels.
Real EstateKorea Real Estate Brokerage Fee Calculator
Enter a transaction amount to calculate the maximum real estate brokerage fee for sales, jeonse, and monthly-rent deals (based on the Seoul Metropolitan Government ordinance).
Real EstateKorea Jeonse-to-Monthly-Rent Conversion Calculator
Calculate the monthly rent when converting a jeonse deposit to monthly rent, along with the statutory maximum conversion rate under Korea’s Housing Lease Protection Act.
Real EstateKorea Property Holding Tax Calculator (Property Tax & Comprehensive Real Estate Tax)
Enter the officially assessed value to estimate property tax (housing, land, buildings) and comprehensive real estate tax together — accounting for the fair market value ratio, progressive rates, local education tax, and urban area tax.
Real EstateKorea Jeonse vs. Buying Comparison Calculator
Enter the purchase price, jeonse deposit, and cash on hand to compare buying (acquisition tax, loan interest, property tax, expected appreciation) against jeonse (brokerage fee, deposit opportunity cost) over N years of holding.
InvestingStock Averaging Down Calculator
Enter your current shares, average cost, and current price to see your new average cost and breakeven return after buying more. Work backward from a target average price, or use it for both KRW and USD holdings.
Everyday LifeBMI Calculator
Enter your height and weight to calculate your BMI, obesity classification per Korean Society for the Study of Obesity criteria, and standard body weight.
Everyday LifeTDEE & Calorie Calculator
Enter your sex, age, height, weight, and activity level to calculate your basal metabolic rate (BMR), maintenance calories (TDEE), and target calories for weight loss or gain.
Everyday LifeD-Day Countdown Calculator
Set a target date to see how many days remain (D-100) or have passed (D+50) from today. Count down to exams, anniversaries, or any date that matters to you.
Everyday LifeKorea Customs Duty & VAT Calculator
Calculates customs duty and VAT using the same 137 items and rates as Korea Customs’ official "Estimated Tax for Overseas Purchases" calculator (including individual consumption tax, liquor tax, and education tax where applicable).
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