HandyTools
Calculate, look up, compare — everyday tools in one place
HandyTools offers free tax & finance calculators, exchange rate tools, and unit converters. Get fast, accurate results for everyday calculations.
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2026 프리랜서 세금 완벽 가이드: 3.3% 원천징수부터 종합소득세 신고까지
2026년 프리랜서 세금 완벽 가이드. 3.3% 원천징수부터 종합소득세 신고, 절세 전략까지 프리랜서가 알아야 할 세금 지식을 총정리합니다.
3/30/2026
2026년 아파트 실거래가 조회·분석 완벽 가이드: 시세 확인부터 매매 판단까지
2026년 아파트 실거래가를 조회하고 분석하는 방법을 총정리합니다. 국토교통부 실거래가 공개시스템부터 온라인 계산기 활용법, 평당가·시세 추이 분석 노하우까지 한눈에 확인하세요.
3/30/2026
2026 생애주기별 공공서비스 혜택 체크리스트: 청년부터 노후까지
2026년 생애주기별로 받을 수 있는 정부 공공서비스 혜택을 체크리스트로 정리했습니다. 청년, 신혼부부, 임산부, 중장년, 고령자별 핵심 혜택과 신청 꿀팁을 확인하세요.
3/29/2026
IP 주소의 모든 것: 공인/사설 IP, IPv4/IPv6, IP로 알 수 있는 정보와 흔한 오해
IP 주소의 기본 개념부터 공인/사설 IP 차이, IPv4와 IPv6 비교, IP로 알 수 있는 정보와 흔한 오해까지 한번에 정리합니다. 내 IP 조회 도구도 제공합니다.
3/28/2026
Real Estate
Housing Subscription Score Calculator
Calculate your Korean housing subscription (cheongnyak) priority score.
Capital Gains Tax Calculator
Calculate Korean capital gains tax on real estate with long-term holding deductions.
Apt. Trade Price Lookup
Look up apartment trade prices by region and date, with autocomplete search by apartment name.
Real Estate Brokerage Fee Calculator
Calculate brokerage fees for real estate transactions including housing, officetel, and commercial properties in Korea.
Acquisition Tax Calculator
Calculate Korean real estate acquisition tax, local education tax, and rural special tax all at once. Covers various acquisition types including purchase, inheritance, gift, and original acquisition, with multi-home surcharge rates.
DSR/DTI Calculator
Calculate your Debt Service Ratio (DSR) and Debt-to-Income ratio (DTI). Add multiple loans to check whether you meet regulatory limits, and simulate Stress DSR scenarios.
Comprehensive Real Estate Tax Calculator
Calculate the Comprehensive Real Estate Holding Tax (종합부동산세) based on officially assessed property values, including tax deductions and Rural Special Tax. Reflects the latest 2026 tax rates and fair market value ratios.
Property Tax Calculator
Calculate property tax, local education tax, and urban area tax for housing, buildings, and land. Reflects 2026 latest rates and single-home household special rates.
Salary & Income
Korean Salary After Tax Calculator
Calculate monthly take-home pay after social insurance and income tax deductions.
Korean Severance Pay Calculator
Calculate severance pay based on work period and average wages.
Salary to Hourly Converter
Convert between annual salary, monthly pay, and hourly rate.
Year-End Tax Settlement Calculator
Estimate your Korean year-end tax refund or additional payment with detailed deduction breakdown.
Comprehensive Income Tax Calculator
Calculate Korean comprehensive income tax with 8-tier progressive rates and bracket visualization for self-employed and freelancers.
Social Insurance Calculator
Calculate Korean four major social insurance premiums (National Pension, Health Insurance, Long-term Care, Employment Insurance) plus Industrial Accident Insurance for both employee and employer.
Freelancer 3.3% Withholding Tax Calculator
Calculate the 3.3% withholding tax on Korean freelancer payments from gross (pre-tax) or net (after-tax) amounts. See the breakdown of 3% income tax and 0.3% local income tax.
Stock & Tax
Stock Capital Gains Tax Calculator
Calculate capital gains tax on domestic (major shareholder) or overseas stock trades.
Stock Return Calculator
Calculate net profit and return rate on stock trades including fees and transaction tax.
Dividend Yield Calculator
Calculate expected dividends, after-tax income, and dividend yield on stock holdings.
Gift Tax Calculator
Calculate Korean gift tax with 5-tier progressive rates based on gift value, donor-recipient relationship, and prior gifts within 10 years.
Inheritance Tax Calculator
Calculate Korean inheritance tax with 5-tier progressive rates, deductions (basic/lump-sum, spouse, financial assets, co-residence), and generation-skipping surcharge.
Finance & Investment
Compound Interest Calculator
Calculate the growth of your investment with compound interest over time.
VAT Calculator
Calculate VAT (Value Added Tax) from total price or supply price.
Lease Calculator
Calculate the actual interest rate from operating lease quotes using monthly payment, acquisition cost, and residual value.
Exchange Rate Calculator
Convert currencies using official exchange rates from the Bank of Korea.
Percentage Calculator
Calculate percentages, ratios, and percentage change easily.
Loan Interest Calculator
Calculate loan payments and interest for equal payment, equal principal, and bullet repayment methods.
Financial Product Rate Comparison
Compare deposit and loan rates across banks and calculate expected returns or payments.
Investment Simulator
Simulate how monthly investments grow over time with compound interest.
Unit Converters
Length Converter
Convert length units: km↔mile, cm↔inch, m↔feet, m↔yard.
Weight Converter
Convert weight units: kg↔lb, g↔oz, geun↔kg.
Temperature Converter
Convert temperature: Celsius↔Fahrenheit, Celsius↔Kelvin.
Area Converter
Convert area units: pyeong↔㎡, acre↔㎡, pyeong↔acre.
Volume Converter
Convert volume units: liter↔gallon, mL↔fl oz.
Speed Converter
Convert speed units: km/h↔mph, m/s↔km/h, m/s↔mph.
Data Converter
Convert data sizes: B, KB, MB, GB, TB (1024-based).
Public & Life Info
BMI Calculator
Calculate your Body Mass Index (BMI) and check your weight classification.
Price Lookup by Item
Look up and compare online product prices across various item categories.
Gas Station Price Lookup
Find the cheapest gas stations by region and check national average fuel prices.
Electricity Bill Calculator
Enter monthly electricity usage (kWh) to calculate the total bill including progressive rates, VAT, and fund charges.
Waste Disposal Info
Look up waste disposal methods, days, and times by region.
Nearby Gas Station Map
Find nearby gas stations on a map and check prices and facility details.
Car Sharing Zone Lookup
Search for SOCAR/GreenCar car sharing zones and view them on a map.
Holiday & Anniversary Calendar
View South Korean public holidays, anniversaries, national events, 24 solar terms, and miscellaneous days on a monthly calendar.
Clock / Stopwatch / World Clock
Check the current time, use a stopwatch, and view times in major cities around the world.
Postal Code Search
Search addresses and look up Korean postal codes (zip codes).
Food Nutrition Lookup
Search nutritional information for processed foods including calories, protein, fat, carbohydrates, and more. Compare against daily recommended intake.
Population & Household Statistics
Look up resident registration population, household count, and gender ratio by province, district, and neighborhood. Based on Ministry of the Interior and Safety public data.
Public Service (Government Benefits) Lookup
Search and explore public services including subsidies, allowances, and medical support provided by government agencies, local governments, and public institutions.
My IP Address
Check your current public IP address along with geolocation, network, and timezone information.
Recipe Lookup
Search over 1,100 healthy recipes from the Food Safety Korea database. View cooking instructions, ingredients, and nutritional information at a glance.
Text Extractor
Extract text from PDF, Word, Excel, CSV, HWP, and HWPX documents.
Regional Job & Business Announcements
Search and browse job postings and business announcements from NABIS (National Balance Information System) across central and regional government agencies.