Payroll · Labor
Salary take-home, annual leave, weekly rest pay, severance
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
Real Estate · Rental
Korean rent cap (5% renewal limit) verification
Car · Tax
Acquisition & annual car tax — ownership costs
Korea Living · Foreigners
Korean age, name romanizer, size converter — everyday essentials
- Korean Age
- Stay Days Tracker
- Name Romanizer
- Size Converter
- Korean Romanizer
- Korean Numbers
- Hangul Decomposer
- School Grade
- Voltage & Plug
- Gift Money
- Due Date
Utility Bills
Korean electricity bill (KEPCO progressive tariff)
Electric (KEC)
Wire size, breaker, voltage drop — Korean Electric Code standard
Timber · Materials
Rafter, roof, stairs, insulation, concrete, materials — NDS-based
- Tile
- Studs
- Drywall
- Plywood
- OSB
- Siding
- Insulation Batts
- Span
- Insulation R/U
- Material Quantity
- Stairs
- Rafter
- Roof Pitch
- Roof Area
- Concrete
- Paint
- Gravel
- Deck & Fence
- Lumber Conversion
Business
Business number validation — offline checksum
Convert · Daily
Pyeong ↔ m² · percent · JSON ↔ CSV — everyday quick tools