InfiniteCalc

Financial Calculators

Mortgages, loans, interest, investments, salary, taxes, and every other money question — calculated instantly and accurately.

Mortgage Calculator
Estimate your monthly mortgage payment, total interest, and amortization schedule.
Auto Loan Calculator
Estimate your monthly car payment, total interest, and the true total cost of a vehicle.
Loan Calculator
Calculate the monthly payment, total interest, and payoff schedule for any loan.
Amortization Calculator
Generate a full amortization schedule showing principal, interest, and balance year by year.
Investment Calculator
Project how a starting balance plus monthly contributions grows at a given annual return.
Compound Interest Calculator
See how principal grows with daily, monthly, quarterly, or annual compounding, plus optional deposits.
Interest Calculator
Calculate simple or compound interest on any principal, rate, and time period.
Salary Calculator
Convert between hourly wages and annual salary, with daily, weekly, and monthly equivalents.
Payment Calculator
Solve for a monthly payment from a loan term, or find how long a fixed payment takes to pay off a loan.
Sales Tax Calculator
Add sales tax to a price or back out the tax included in a total.
Inflation Calculator
See how inflation erodes buying power or raises future prices over time.
401k Calculator
Project your 401k balance at retirement including employer match and salary growth.
CD Calculator
Calculate what a certificate of deposit will be worth at maturity and the interest earned.
Margin Calculator
Find gross margin and markup from cost and revenue, or price a product from a target margin.
Percent Off Calculator
Find the sale price after a percent-off discount, with optional stacked discount and sales tax.
Paycheck Calculator
Estimate your take-home pay per paycheck after 2025 federal, state, and FICA taxes.
Credit Card Payoff Calculator
See how long it takes to pay off your credit card and how much interest you will pay.
IRA Calculator
Project how your IRA grows to retirement from contributions and compound returns.
Markup Calculator
Find selling price from cost plus markup %, or the markup percentage between cost and price.
Pay Raise Calculator
See your new salary and the extra pay per year, month, and hour after a raise.
Time and a Half Calculator
Find your time-and-a-half rate and total overtime pay for any hourly wage.
Prorated Rent Calculator
Work out partial month rent, the daily rate, and days owed from your move-in date.
Coast FIRE Calculator
Find the invested amount that lets you stop contributing and still retire on time.
CPM Calculator
Solve for CPM, campaign cost, or impressions using the cost-per-mille formula.

About our financial calculators

Money decisions are where a wrong number costs the most. A half-percent difference on a mortgage rate is tens of thousands of dollars over 30 years; misreading margin as markup can quietly erase a business’s profit. These financial calculators use the exact formulas lenders, banks, and accountants use — the standard amortization formula for loans and mortgages, compound interest with your choice of compounding frequency, and real payroll math for salary conversions.

Every tool goes beyond the headline number. Loan and mortgage calculators break payments into principal and interest with year-by-year amortization schedules and charts, so you can see how much of your early payments go to interest alone. Investment, 401k, and CD calculators plot growth curves that separate what you contributed from what compounding earned. Inflation tools show what your money will actually buy years from now.

Use them to compare scenarios before you commit: a 15 vs 30-year term, an extra $100 per month, a higher down payment. The numbers are estimates for planning — your lender’s exact terms will govern the final figures, and none of this is financial advice.