These calculators cover the money questions most people actually face: what a mortgage will really cost, how much of a paycheck survives tax, how long a debt takes to clear, and what regular saving grows into. Each tool shows the result and the inputs that drive it, so you can see which number is doing the most work.
Three are good starting points. The Mortgage Calculator and Amortization Calculator show how early payments are mostly interest. The Paycheck Calculator estimates take-home pay after federal tax, FICA and state tax. The Compound Interest Calculator is the quickest way to see why starting early matters more than contributing more later.
Home & Mortgage
Monthly payment and amortization schedule
Amortization CalculatorFull payment-by-payment loan schedule
Mortgage Payoff CalculatorSave thousands in interest
Refinance CalculatorBreak-even point and savings from refinancing
Down Payment CalculatorDown payment amount and loan size
HELOC CalculatorHome equity line payment and borrowing room
Home Equity CalculatorHow much equity you have
Rent vs Buy CalculatorIs buying worth it?
Rent Affordability CalculatorHow much rent your income supports
Rent CalculatorRent split, proration and budgeting
Loans & Debt
Any loan type, any term
Personal Loan CalculatorMonthly payment and total interest
Payment CalculatorMonthly payment for any loan amount and term
APR CalculatorTrue cost of a loan
Credit Card Payoff CalculatorPay off credit cards faster
Debt Payoff CalculatorAvalanche or snowball method
Debt-to-Income Ratio CalculatorDTI for mortgage qualification
Pay, Tax & Income
Net take-home pay
Payroll CalculatorGross-to-net pay for an employee
Payroll Tax CalculatorFederal tax + FICA
Income Tax CalculatorEstimate federal income tax
Tax CalculatorEstimate income tax
Sales Tax CalculatorPrice plus tax total
Salary CalculatorAnnual to hourly and back
Hourly to Salary CalculatorConvert hourly rate to salary
Overtime Calculator1.5x pay calculation
Raise CalculatorNew salary after a raise
Social Security CalculatorEstimate Social Security benefits
BAH CalculatorMilitary housing allowance estimate
Saving & Investing
Watch your money grow over time
Simple Interest CalculatorSimple and compound interest
APY CalculatorConvert a rate to its true annual yield
Savings CalculatorReach your savings goal
CD CalculatorCD maturity value and interest earned
Money Market CalculatorMoney market account growth
Investment CalculatorProject investment returns
SIP CalculatorSystematic investment plan returns
ROI CalculatorReturn on investment
Dividend CalculatorDividend income & yield
Stock CalculatorProfit, loss, and return
Inflation CalculatorWhat money is worth over time
Emergency Fund CalculatorHow much to save
Gold CalculatorValue gold by weight and purity
Retirement & Education Saving
Plan for retirement
401(k) CalculatorProject 401(k) balance growth
Roth IRA CalculatorTax-free retirement projections
RMD CalculatorRequired minimum distribution from retirement accounts
529 Plan CalculatorCollege savings growth and projected balance
Budgeting, Business & Currency
Track income vs expenses
Net Worth CalculatorAssets minus liabilities
Break-Even CalculatorFixed costs ÷ contribution margin
Margin CalculatorProfit margin and markup from cost and price
Depreciation CalculatorStraight-line and declining-balance depreciation
Life Insurance CalculatorEstimate coverage cost and needs
Discount CalculatorSale price after discount
Currency ConverterExchange rates
British Pounds to US DollarsBritish pounds to US dollars
Several tools overlap on purpose. Use the Loan Calculator for any fixed-rate loan, the Amortization Calculator when you want the full schedule, the APR Calculator to compare offers with different fees, and the Debt Payoff Calculator when you have several balances to clear.
Treat every result as an estimate built on standard formulas. Real loans add fees, insurance and escrow; real paychecks depend on your W-4, benefits and local taxes; tax rules and contribution limits change most years. Use the numbers to compare options, then confirm exact figures with your lender, employer or a tax professional before committing.