Financial

  • Sales Calculator: Cost, Revenue, Profit, Margin & Markup
    Free sales calculator. Enter any 2 of cost, revenue, gross profit, gross margin or markup and instantly solve the other 3. Includes formulas and examples.
  • Simple Interest Calculator (I = Prt)
    Solve the simple interest formula I = Prt for interest, principal, rate or time. Choose day-count basis (360 or 365), weeks, months, quarters or years.
  • Debt Snowball Calculator
    Free debt snowball calculator. Pay off debts smallest-balance-first, roll payments forward, and see your debt-free date, payoff time, and total interest.
  • Real (Inflation-Adjusted) Return Calculator
    Calculate your real, inflation-adjusted rate of return using the Fisher equation. See how much your investment truly grows in purchasing power.
  • Free Cash Flow (FCF) Calculator
    Calculate Free Cash Flow (FCF) from operating cash flow and capital expenditures. Instantly find how much cash a business generates after investment.
  • Sales Tax vs Income Tax Deduction Calculator
    US calculator: compare deducting state income tax vs sales tax, add property tax, and apply the $10,000 SALT cap to find your itemized deduction.
  • Marginal Tax Rate Calculator
    Find your US federal marginal tax rate (2026 brackets) plus total tax and effective rate. Enter taxable income and filing status for instant results.
  • Roth Conversion Tax Calculator
    Estimate the federal income tax on a 401(k)/IRA-to-Roth conversion (US). Enter the amount converted and your marginal tax rate to see the tax owed.
  • HSA Tax Savings Calculator
    Estimate how much you'll save in taxes by contributing to a US Health Savings Account (HSA), including federal, state, and FICA payroll savings.
  • Monthly Take-Home Pay Calculator
    Convert your annual gross salary into monthly take-home pay. Enter your salary and effective tax rate to see net monthly income, tax, and yearly totals.
  • 401(k) Employer Match Calculator
    US 401(k) employer match calculator. Enter your salary, contribution %, match rate and cap to see how much free money your employer adds each year.
  • Gross Profit Margin Calculator
    Calculate gross profit margin from revenue and COGS. Get margin %, gross profit, and markup on cost instantly with this free online calculator.
  • APR Calculator (Loan with Fees)
    Estimate a loan's APR by folding upfront fees and total interest into one annual percentage rate. Free, fast, simplified add-on APR calculator.
  • Cost-of-Living Adjustment (COLA) Calculator
    Calculate your cost-of-living adjustment (COLA). Enter a rate or two CPI values to find your new salary, pension, or benefit amount and the dollar increase.
  • Return on Investment (ROI) Calculator
    Free ROI calculator. Enter your investment cost and final value to instantly find your return on investment percentage and net profit.
  • Break-Even Interest Rate Calculator
    Compare taxable vs tax-free yields. Find the taxable equivalent yield a taxable bond must earn to beat a tax-free municipal bond at your tax rate.
  • Implied Interest Rate Calculator
    Find the implied compound interest rate from a start value, end value, and number of periods using r = (A/P)^(1/n) − 1. Free and instant.
  • Raise Needed to Beat Inflation Calculator
    Find out how big a raise you need to keep up with inflation. Enter your salary and the inflation rate to see the extra pay required to protect your purchasing power.
  • Annual Percentage Yield (APY) Calculator
    Calculate APY (Annual Percentage Yield) from a nominal rate and compounding frequency. See your true effective annual return with the formula APY = (1 + r/n)^n − 1.
  • Payback Period Calculator
    Calculate the payback period of an investment by dividing the initial cost by annual cash inflow. See break-even time in years and months instantly.
  • Future Value of Recurring Payments Calculator
    Calculate the future value of a series of equal recurring payments (an ordinary annuity) using payment amount, interest rate per period, and number of periods.
  • Credit Card Interest Per Month Calculator
    Calculate the monthly interest charged on your credit card balance from the APR. See monthly, daily, and yearly interest costs instantly.
  • Hourly Pay Raise Calculator
    Calculate your new hourly wage and annual pay after a percentage raise. Enter current pay, raise %, hours and weeks to see your increase.
  • Additional Funds Needed Calculator
    Calculate the Additional Funds Needed (AFN) for sales growth using spontaneous assets, liabilities, profit margin, and retention ratio. Free finance tool.

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