Free Finance Calculators
Loan, mortgage, compound interest, SIP and GST calculators.
All 22 finance calculators
Pick a tool to get started — every one is free and works in your browser.
Loan Calculator
Monthly payment, total interest and a full amortization schedule.
Open toolMortgage Calculator
Monthly mortgage payment with taxes, insurance and HOA.
Open toolCompound Interest Calculator
See how savings grow with compound interest and monthly deposits.
Open toolSIP & Lumpsum Calculator
Estimate mutual fund returns from SIP or one-time investing.
Open toolGST Calculator
Add or remove GST from a price, with CGST and SGST split.
Open toolAuto Loan Calculator
Car payment with sales tax, down payment and trade-in.
Open toolCredit Card Payoff Calculator
How long to pay off a credit card, and the interest it costs.
Open toolDebt Payoff Calculator
Debt snowball vs avalanche: your fastest way to be debt-free.
Open toolRetirement Calculator
How much you will have to retire on, and the income it gives.
Open tool401(k) Calculator
401(k) balance at retirement with your employer match.
Open toolRoth IRA Calculator
Tax-free Roth IRA growth with 2026 contribution limits.
Open toolHouse Affordability Calculator
How much house can I afford? Based on income and debts.
Open toolRefinance Calculator
Should I refinance? Monthly savings and break-even point.
Open toolStudent Loan Calculator
Student loan payment, payoff date and savings from paying extra.
Open toolAPR Calculator
The true annual cost of a loan, including fees.
Open toolROI Calculator
Return on investment, total and annualized.
Open toolSimple Interest Calculator
Simple interest on any amount, rate and time.
Open toolSalary Calculator
Convert salary to hourly, weekly, monthly and annual pay.
Open toolTip Calculator
Work out the tip and split the bill between friends.
Open toolVAT Calculator
Add or remove UK VAT at 20%, 5% or any rate.
Open toolSales Tax Calculator
US sales tax by state, added to or removed from a price.
Open toolHST & GST Calculator (Canada)
Canadian GST, HST and PST by province.
Open toolAbout our finance calculators
Plan your money with confidence. Work out the monthly payment on a loan or a mortgage, see how compound interest grows your savings, estimate mutual fund returns with SIP or lumpsum investing, and add or remove GST from a price.
Every calculator shows a full breakdown — how much goes to interest, how the balance falls year by year — so you can compare options before you commit. Results are estimates for planning, not financial advice.