Finance Calculators
Mortgage, tax, retirement, savings, loans — every formula shown and explained.
Auto Loan Calculator
Monthly car payment, total interest, and total cost from price, down payment and rate.
Use Calculator →Personal Loan Calculator
Monthly payment and total repayment cost for any personal loan — 1 to 7 year terms.
Use Calculator →Loan Calculator
Standard loan amortization — P×[r(1+r)^n]/[(1+r)^n-1] formula shown.
Use Calculator →Compound Interest Calculator
Daily, monthly, or annual compounding with optional regular contributions.
Use Calculator →Simple Interest Calculator
I = P × r × t — straightforward interest for loans and short-term savings.
Use Calculator →Savings Calculator
Project savings growth with regular contributions. Includes goal tracker.
Use Calculator →Tax Calculator 2026
Federal income tax, state tax, and FICA using 2026 IRS brackets. Shows effective rate.
Use Calculator →401k Calculator
Project 401k balance at retirement with employer match and compound growth.
Use Calculator →Retirement Calculator
FIRE number and retirement readiness across multiple countries.
Use Calculator →FIRE Calculator
Financial Independence number — 6 countries, 4% safe withdrawal rate.
Use Calculator →Credit Card Payoff Calculator
How long to pay off your balance and total interest paid at any monthly payment.
Use Calculator →Credit Card Interest Calculator
Daily, monthly, and annual interest cost on any credit card balance.
Use Calculator →Amortization Calculator
Full payment-by-payment amortization schedule for any loan or mortgage.
Use Calculator →Net Worth Calculator
Total assets minus liabilities — know exactly where you stand financially.
Use Calculator →Student Loan Calculator
Monthly payments, total interest, payoff timeline with term comparison
Use Calculator →Budget Calculator (50/30/20)
Monthly budget planner — needs, wants, savings with real-time tracking
Use Calculator →Rent Calculator
How much rent can you afford? 30% rule with full monthly budget breakdown
Use Calculator →15 vs 30 Year Mortgage
Side-by-side comparison — monthly payment, total interest saved
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