Free Financial Calculators

Plan your finances with our free online calculators

Making smart financial decisions starts with understanding the numbers. Our free financial calculators help you estimate mortgage payments, project investment returns, plan for retirement, and calculate your take-home pay after taxes. Each tool uses real-world formulas and runs entirely in your browser, so your financial data stays private.

Why Use Our Financial Calculators

Bank-grade formulas -- Mortgage and loan calculators use the same amortization methods used by financial institutions.
Financial privacy -- Your salary, loan amounts, and investment figures are never sent to any server or stored anywhere.
Side-by-side comparison -- Quickly adjust parameters to compare different scenarios like loan terms or retirement ages.

Mortgage Calculator

Calculate mortgage payments

ROI Calculator

Calculate return on investment

Retirement Calculator

Plan your retirement savings

Take Home Pay Calculator

Calculate after-tax income

Inflation Calculator

Calculate purchasing power changes

Year-End Tax Calculator

Calculate your year-end tax settlement

Capital Gains Tax Calculator

Calculate tax on investment gains

Gift Tax Calculator

Calculate Korean gift tax

Acquisition Tax Calculator

Calculate Korean property acquisition tax

Jeonse-Wolse Converter

Convert between Korean jeonse and wolse

Health Insurance Calculator

Calculate Korean health insurance premiums

4 Major Insurance Calculator

Calculate all Korean social insurance premiums

Savings Interest Calculator

Calculate Korean savings account interest

Auto Loan Calculator

Calculate car loan payments and costs

FAQ

Can I trust these calculators for real financial planning?

Our calculators provide accurate estimates using standard financial formulas. They are excellent for planning and comparison purposes. For major financial decisions, we recommend consulting with a qualified financial advisor who can account for your specific circumstances.

Is my financial data kept private?

Absolutely. All calculations run entirely in your browser using client-side JavaScript. Your salary, loan amounts, investment figures, and other financial data are never transmitted to any server or stored in any database.