100% Free ยท No sign-up
The fastest way to calculate money & units
Loan payments, compound growth, live exchange rates, unit conversion, percentages, VAT, and income tax โ calculated instantly in your browser.
Calculation tools
Loan Interest Calculator Enter the loan amount, annual interest rate, and term to calculate your monthly payment and total interest. Assumes equal principal-and-interest repayment. Compound Interest Calculator Enter your initial capital, monthly contribution, annual return, and time horizon to see your final balance and total earnings. Compounded monthly. Currency Converter Convert between major currencies with live exchange rates. Great for travel, remittance, and online shopping. Unit Converter Convert length, weight, temperature, area, volume, speed, data, and time accurately and for free. Percentage Calculator Free percentage calculator โ find a percent of a value, ratios, and percent change, all in one place. VAT / Sales Tax Calculator Quickly compute the net amount, VAT, and total. Defaults to 10% (Korea); the rate is editable for any region. Income Tax Calculator Enter taxable income to compute income tax, effective rate, and after-tax amount using progressive brackets. US federal (single, 2024). Age Calculator Enter your date of birth to get your exact age (international), Korean year/counting age, days lived, and days until your next birthday. Date / D-day Calculator Calculate D-day to a target date, the difference between two dates, and add/subtract from a date โ all in one place. Accounts for leap years.
Why FinCalc?
Accurate math
Uses standard financial formulas and conversion factors you can trust.
Fast & lightweight
A light static site that loads instantly on any device. We never store your data.
English ยท ํ๊ตญ์ด
Bilingual support for both global and Korean users.