올인원 계산기 - 실수령액·세금·퇴직금

🧮 All-in-One Calculator — Over 50 types of professional calculators in one app!

Are you wasting time searching and looking for a calculator every time you need to calculate complex taxes, social insurance contributions, or electricity bills?

The All-in-One Calculator is a comprehensive calculator platform for office workers, self-employed individuals, real estate investors, and those preparing for retirement. It automatically reflects the latest tax rates, rates, and policies to always provide accurate calculation results.

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💼 Office Worker Calculators (8 Types)

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• Net Pay Calculator — Automatically calculates 4 major insurance contributions, income tax, and local income tax simply by entering annual salary or monthly wage

• Severance Pay Calculator — Accurate severance pay calculation based on length of service and salary

• Annual Leave Allowance Calculator — Automatically calculates allowance for unused annual leave

• Weekly Holiday Allowance Calculator — Check weekly holiday allowance for part-time andアルバイト (part-time) jobs

• Overtime Pay Calculator — Automatically applies premium rates for extended, night, and holiday work

• Hourly Wage Calculator — Two-way conversion between monthly salary and hourly wage

• Unemployment Benefit Calculator — Simulation of estimated unemployment benefit amount and duration

• Average Daily Wage Calculator — Average daily wage based on severance pay and industrial accident insurance Calculation

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💰 Tax Calculators (4 Types)

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• Comprehensive Income Tax Calculator — Automatic application of 8 tax brackets

• Capital Gains Tax Calculator — Calculation of tax on capital gains from real estate and stocks

• Gift Tax Calculator — Automatic application of deductions and tax rates for gifts between family members

• Inheritance Tax Calculator — Precise calculation of inheritance deductions and tax rates

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🏠 Real Estate Calculators (6 Types)

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• Acquisition Tax Calculator — Automatic calculation of acquisition tax for housing, land, and commercial properties

• Jeonse-to-Monthly Rent Conversion Calculator — Comparison of Jeonse↔Monthly Rent conversion rates

• Real Estate Loan Calculator — Based on LTV and DSR Limit & Interest Simulation

• Brokerage Fee Calculator — Automatic application of statutory commission rates by transaction type

• Rental Yield Calculator — Analysis of annual yield and monthly cash flow

• Area Conversion Calculator — Instant conversion between pyeong and m²

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📊 Financial & Investment Calculators (5 Types)

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• Loan Interest Calculator — Comparison of equal principal and interest, equal principal, and lump-sum repayment at maturity

• Installment/Deposit Interest Calculator — Simple interest, compound interest, and net interest reflected in taxes

• Interest Calculator — Compound interest calculation + Rule of 72

• Investment Return Calculator — Comparison of CAGR and simple yield

• Exchange Rate Calculator — Instant conversion based on real-time exchange rates

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🏦 Pension Calculator (4 Types)

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• National Pension Estimated Payout — Pension simulation based on contribution period and income

• Private Pension Savings Calculator — Analysis of tax deductions and estimated payouts

• Pension Withdrawal Calculator — Comparison of reductions and increases for early/deferred withdrawals

• Retirement Planning Calculator — Simulation of target retirement funds and withdrawal strategies

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⚡ Energy Calculator (7 Types)

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• Residential Electricity Rate Calculator — Automatic application of progressive tiers and seasonal differential rates

• Educational, General, Industrial, and Other Electricity Rate Calculators

• Power Consumption Calculator — Monthly electricity bill prediction by appliance

• Solar Power Generation Revenue Calculator — Estimated revenue by installation capacity Analysis

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🚗 Automotive · Health · Business · Lifestyle (15 Types)

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• Automobile Tax · Fuel Efficiency · EV Charging Fee Calculator

• BMI · Basal Metabolic Rate · Body Fat Percentage Calculator

• Value Added Tax · Margin · Labor Cost Calculator

• Discount Rate · Date · International Age · Lunar Calendar Conversion · Unit Converter

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✨ Special Features of the All-in-One Calculator

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📌 Automatic Reflection of Latest Policies

— When policy constants such as 4 major insurance rates, income tax brackets, electricity rate tables, and minimum wage change, they are automatically synchronized without an app update.

📌 Favorites & Home Widgets

— Add frequently used calculators to your favorites and launch them directly from the home screen widget (4×2 grid, 1×1 single).

📌 Simple Mode / Detailed Mode

— Switch to Simple Mode for quick calculations or Detailed Mode for precise simulations.

📌 Save Calculation History

— All calculation results are automatically saved so you can review them at any time.

📌 Edit Constants

— You can directly modify policy constants such as tax rates, rates, and limits to enable comparisons across different scenarios.

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🔒 Privacy Protection

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All calculations are processed on the device. Salary and asset information is not transmitted externally.

Solve complex calculations easily and accurately with the All-in-One Calculator!