75 tools · all free · nothing to install

Tricky Korean numbers,
Take-home salary— solved in 3 seconds.

75 free calculators citing Korean law and KS standards. No signup — search, type, get the answer.

PopularSalary Take-Home Pyeong ↔ m² Percent Business Number Validation Electricity Bill Korean Age

Pyeong converter

How big is 84㎡?

= 25.4 pyeong

VAT split

₩11,000 (VAT incl.)

= 10,000 + 1,000

Take-home salary

On a ₩50M salary,

what hits your bank?

Calculate now

All 75 tools — tap any to open

Top search arrivals

Most used right now

Salary Take-Home

What actually lands in your bank after Korean insurance and income tax

Pyeong ↔ m²

How many pyeong is 84㎡ — with Korean real-estate area presets

Percent

Discount, markup, reverse percent — every confusing % case in one screen

Business Number Validation

Verify a Korean business registration number by checksum before you pay

Electricity Bill

Which progressive tier you are in — KEPCO residential billing

Korean Age

Korean age vs international age vs year age — sorted out at once

Every calculation, covered

10 categories · 75 tools — every calculator cites its legal or KS source

Payroll · LaborSalary take-home, annual leave, weekly rest pay, severance

Salary Take-Home Severance 4 Insurances + Net Pay Annual Leave Weekly Rest Pay Min Wage → Monthly +1

Finance · TaxCompound interest, VAT, foreign stock capital gains

VAT Income Tax Loan Calculator Capital Gains Tax Freelancer 3.3%Gift Tax +4

Korea Living · ForeignersKorean age, name romanizer, size converter — everyday essentials

Korean Age School Grade Gift Money Size Converter Due Date Name Romanizer +11

Real Estate · RentalKorean rent cap (5% renewal limit) verification

Jeonse ↔ Wolse + Scam Check Apartment Area & Price/Pyeong Brokerage Fee Rent Cap (5%)Underwater Jeonse Risk

Timber · MaterialsRafter, roof, stairs, insulation, concrete, materials — NDS-based

Gravel Concrete Brick & Block Rebar Weight Wallpaper Paint +17

Electric (KEC)Wire size, breaker, voltage drop — Korean Electric Code standard

Breaker Capacity Wire Size Voltage Drop

Convert · DailyPyeong ↔ m² · percent · JSON ↔ CSV — everyday quick tools

Pyeong ↔ m² Percent Temperature Distance Converter JSON ↔ CSV

Car · TaxAcquisition & annual car tax — ownership costs

Annual Car Tax Acquisition Tax

Utility BillsKorean electricity bill (KEPCO progressive tariff)

Electricity Bill BTU / AC Sizing

BusinessBusiness number validation — offline checksum

Business Number Validation

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Stories behind the calculators

Field Notes

Jun 30, 202610 min read

Korean Units & Numbers for Foreigners: Pyeong, Age, Sizes, Distance & More

Every confusing Korean unit and number in one place — pyeong (area), Korean age & school grade, clothing/shoe sizes (US ↔ Korea), distance (ri/miles ↔ km), temperature (°F ↔ °C), and the business registration number. Each with a free instant-conversion tool.

Jun 18, 202612 min read

Renting in Korea as a Foreigner: Jeonse, Wolse, Deposits & Your Rights

Jeonse vs wolse, the conversion rate, how to protect your deposit after the 2022–2023 fraud wave, and the change-of-residence-report trap every foreign tenant must know — with a step-by-step pre-signing checklist.

Jun 17, 202614 min read

Living in Korea as a Foreigner: The Complete Money, Visa & Admin Guide (2026)

Arrival (ARC, banking) → settling (rent, health insurance) → work & tax (year-end, flat tax) → staying (F-2-7, D-8) → leaving (pension refund). The whole journey of living in Korea, step by step, with free calculators and checklists.

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Workmate — Free Tools & Calculators for Korean Standards