Payroll · Labor
Salary take-home, annual leave, weekly rest pay, severance
- Salary Take-Home
- Severance
- 4 Insurances + Net Pay
- Annual Leave
- Weekly Rest Pay
- Min Wage → Monthly
- Unemployment Benefit
Free Calculator Library
Calculators for Korean Professionals
From payroll take-home to Korean electric code, timber NDS, and VAT — 20+ calculators aligned to Korean standards. No signup, no payment, no app install.
Finance · Tax
Compound interest, VAT, foreign stock capital gains
- VAT
- Income Tax
- Loan Calculator
- Capital Gains Tax
- Freelancer 3.3%
- Gift Tax
- Compound Interest
- Foreign Stock Tax
- Prepayment Penalty
- Foreign Flat Tax (19%)
Korea Living · Foreigners
Korean age, name romanizer, size converter — everyday essentials
- Korean Age
- School Grade
- Gift Money
- Size Converter
- Due Date
- Name Romanizer
- Voltage & Plug
- Cost of Living
- Remittance Cost
- Korean Romanizer
- Korean Numbers
- Hangul Decomposer
- Stay Days Tracker
- Health Insurance (NHIS)
- Pension Refund
- F-2-7 Residence Visa
- D-8 Startup Visa
Real Estate · Rental
Korean rent cap (5% renewal limit) verification
- Jeonse ↔ Wolse + Scam Check
- Apartment Area & Price/Pyeong
- Brokerage Fee
- Rent Cap (5%)
- Underwater Jeonse Risk
Timber · Materials
Rafter, roof, stairs, insulation, concrete, materials — NDS-based
- Gravel
- Concrete
- Brick & Block
- Rebar Weight
- Wallpaper
- Paint
- Tile
- Plaster Mortar
- Roof Area
- Roof Pitch
- Drywall
- Plywood
- OSB
- Siding
- Studs
- Insulation R/U
- Insulation Batts
- Span
- Rafter
- Material Quantity
- Stairs
- Deck & Fence
- Lumber Conversion
Electric (KEC)
Wire size, breaker, voltage drop — Korean Electric Code standard
Convert · Daily
Pyeong ↔ m² · percent · JSON ↔ CSV — everyday quick tools
Car · Tax
Acquisition & annual car tax — ownership costs
Utility Bills
Korean electricity bill (KEPCO progressive tariff)
Business
Business number validation — offline checksum
About this collection
Every Workmate calculator is aligned to Korean standards (KS, KEC, NDS) and current laws and rates. Each one shows the formula, basis, and sources — not just an answer — so you can attach it to a quote or filing, or verify it yourself. All inputs are processed in your browser and never sent to a server.
What's inside
- Payroll & labor — take-home pay, annual leave, severance, min wage
- Tax & finance — income tax, VAT, compound interest, loans
- Real estate — jeonse/wolse, 5% rent cap, exclusive/supply area
- Electric — wire size, breaker, voltage drop (Korean KEC)
- Timber & materials — span, concrete, plywood, stairs, quantity
- Korea living & foreigners — visas, pension refund, health insurance
Living in Korea as a foreigner?
Visa (F-2-7, D-8), National Pension refund, health insurance, jeonse/wolse, and year-end tax tools are available in English. See the complete guide to living in Korea for the whole journey.