Free US Financial Calculators
Fast, accurate, no sign-up. Updated for 2026.
Mortgage Calculator
Free US mortgage calculator: estimate your monthly payment, total interest, and full amortization schedule.
Open calculator →Auto Loan Calculator
Free US auto loan calculator: estimate your monthly car payment, total interest, and total cost.
Open calculator →Salary After Tax Calculator
Free US salary calculator: estimate federal, FICA, and state taxes and your monthly take-home pay.
Open calculator →Paycheck Calculator
Free US paycheck calculator: estimate your federal, FICA, and state deductions and net pay per paycheck.
Open calculator →Debt Payoff Calculator
Free US debt payoff calculator: see how long it takes to pay off credit card debt, total interest, and how extra payments speed things up.
Open calculator →DTI Ratio Calculator
Free US debt-to-income (DTI) calculator: see your front-end and back-end ratios and whether you qualify for a mortgage.
Open calculator →PMI Calculator
Free US PMI calculator: estimate your private mortgage insurance cost, when it cancels, and total PMI paid on a home loan.
Open calculator →HELOC Calculator
Free US HELOC calculator: estimate your monthly home equity line of credit payment, interest-only vs amortized, and available equity.
Open calculator →Refinance Calculator
Free US refinance calculator: compare your current vs new mortgage payment, monthly savings, break-even point, and total interest saved.
Open calculator →Retirement Calculator
Free US retirement calculator: project your 401(k)/IRA balance at retirement and the monthly income it can produce.
Open calculator →Tax Calculator
Free US income tax calculator: estimate federal, FICA, and state taxes plus your effective tax rate.
Open calculator →Credit Card Payoff Calculator
Free US credit card payoff calculator: see how long minimum payments take vs a fixed payment, and the total interest each path costs.
Open calculator →Child Support Calculator
Free US child support estimator: rough monthly support range based on income and number of children.
Open calculator →Concrete Calculator
Free concrete calculator: cubic yards for a slab, 60lb/80lb bag counts, and material cost estimate for your project.
Open calculator →TDEE Calculator
Free TDEE calculator: estimate your total daily energy expenditure, BMR, and calories for cutting, maintaining, or bulking.
Open calculator →Water Intake Calculator
Free water intake calculator: how much water you should drink daily based on weight and exercise.
Open calculator →Sleep Calculator
Free sleep calculator: the best bedtimes to wake up refreshed, based on 90-minute sleep cycles.
Open calculator →Body Fat Calculator
Free body fat percentage calculator using the US Navy tape method.
Open calculator →Paint Calculator
Free paint calculator: gallons of paint needed for a room and estimated cost.
Open calculator →Mulch Calculator
Free mulch calculator: cubic yards of mulch for your beds, bag counts, and estimated cost.
Open calculator →Salary Percentile Calculator
Free US salary percentile calculator: see what percentile your income ranks among full-time US earners.
Open calculator →Home Affordability Calculator
Free home affordability calculator: how much house you can afford based on income, debt, down payment, and the 28/36 rule.
Open calculator →GPA Calculator
Free GPA calculator: compute your grade point average on the 4.
Open calculator →Due Date Calculator
Free pregnancy due date calculator: estimated due date from your last period using Naegele's rule, plus current gestational age and trimester.
Open calculator →Final Grade Calculator
Free final grade calculator: the exam score you need to reach your target course grade, based on your current grade and exam weight.
Open calculator →Why use our calculators?
Every calculator runs instantly in your browser — no page reloads, no sign-up, no data collected. Formulas use standard US amortization and 2025 federal tax brackets.
More tools coming soon
TDEE, water intake, body fat, sleep, paint, and mulch calculators are in the pipeline.