Finance Calculators

Auto Loan Calculator

Calculate your monthly car payment, total interest, and total cost for any auto loan — new or used.

Mortgage Calculator

Estimate your monthly mortgage payment, total interest, and total cost for any home loan amount, rate, and term.

Sales Tax Calculator

Calculate U.S. sales tax on any purchase — or work backwards from the total to find the pre-tax amount.

Compound Interest Calculator

See how savings, a 401(k), IRA, or brokerage account grows with compound interest and monthly contributions.

Mortgage Extra Payment Calculator

See how making extra mortgage payments shortens your loan and slashes total interest. Compare monthly extra, yearly lump sum, or one-time prepayment scenarios.

Take-Home Paycheck Calculator

Convert your gross salary to take-home pay after federal tax, FICA, state tax, and 401(k) contributions.

Forex Pip / Lot Size / Margin Calculator

Calculate pip value, optimal lot size, and required margin for any forex trade. Built for retail forex traders managing risk per trade.

401(k) Early Withdrawal Calculator

Estimate how much you actually keep after taking an early 401(k) withdrawal — the 10% penalty, federal income tax, state tax, and lost long-term growth.

401(k) Retirement Calculator

Project your 401(k) balance at retirement using your salary, contribution rate, employer match, and expected return.

Tip Calculator

Calculate a fair tip at restaurants, bars, and for services — and split the bill evenly among any number of people.

Savings Goal Calculator

Calculate the monthly amount you need to save to hit a financial goal by a target date.

Credit Card Payoff Calculator

See how many months it takes to pay off a credit card balance and how much interest you will pay at your chosen monthly payment.

Income Tax Calculator

Estimate your 2025 federal income tax, effective rate, and marginal bracket from taxable income and filing status.

Loan Calculator with Interest

Calculate monthly payment, total interest, and total cost for any loan — personal, student, business, RV, or anything else with a fixed rate and term.

Savings Calculator with Interest

See how a savings goal grows with monthly contributions and compound interest. Includes a year-by-year breakdown of your balance, total deposits, and interest earned.

Simple Interest Calculator

Calculate simple interest on a loan, CD, or short-term note — principal, rate, and time with no compounding.

Rent vs Buy Calculator

Compare the total cost of renting versus buying a home over a chosen time horizon.