Business & Rate Calculators
Calculate freelance rates, salary conversions, mortgages, compound interest, and US taxes with 100% private in-browser math. All 22 utilities execute directly inside your browser so your data never touches a server.
Mortgage Calculator
Calculate your true monthly house payment including principal, interest, property taxes, home insurance, and PMI.
Auto Loan Calculator
Calculate your true monthly car payment factoring in vehicle price, interest APR, loan term, trade-in value, and sales tax.
Paycheck Calculator (by State)
Calculate your net take-home pay after federal income tax, state tax, Social Security, and Medicare deductions.
Hourly to Salary Calculator
Fast, private hourly to salary calculator that runs entirely inside your browser with zero server uploads.
Salary After Tax by State
Fast, private salary after tax by state that runs entirely inside your browser with zero server uploads.
Self-Employment Tax Calculator
Calculate your 15.3% SE tax, Social Security, Medicare, and estimated quarterly IRS tax obligations.
Freelance Rate Calculator
Determine the exact hourly rate you must charge to meet your target take-home income after taxes, overhead, and non-billable time.
Sales Tax Calculator by State
Fast, private sales tax calculator by state that runs entirely inside your browser with zero server uploads.
401(k) Calculator
Fast, private 401(k) calculator that runs entirely inside your browser with zero server uploads.
Retirement Savings Calculator
Fast, private retirement savings calculator that runs entirely inside your browser with zero server uploads.
Compound Interest Calculator
Calculate the exponential growth of your savings and investments with daily, monthly, or annual compounding.
Loan Amortization Calculator
Calculate your monthly loan payment, interest vs principal breakdown, and interest saved with extra payments.
Credit Card Payoff Calculator
Fast, private credit card payoff calculator that runs entirely inside your browser with zero server uploads.
Debt Snowball Calculator
Fast, private debt snowball calculator that runs entirely inside your browser with zero server uploads.
Inflation Calculator
Fast, private inflation calculator that runs entirely inside your browser with zero server uploads.
Tip Calculator
Fast, private tip calculator that runs entirely inside your browser with zero server uploads.
Percentage Calculator
Fast, private percentage calculator that runs entirely inside your browser with zero server uploads.
Age Calculator
Fast, private age calculator that runs entirely inside your browser with zero server uploads.
Date Difference Calculator
Fast, private date difference calculator that runs entirely inside your browser with zero server uploads.
Time Zone Converter (EST PST)
Fast, private time zone converter (est pst) that runs entirely inside your browser with zero server uploads.
Unit Converter
Fast, private unit converter that runs entirely inside your browser with zero server uploads.
Currency Converter
Fast, private currency converter that runs entirely inside your browser with zero server uploads.