IQCalculators

Smarter financial calculators

Loans, mortgages, retirement, investing, and taxes — fast, accurate, and easy to use. Start typing to find the right one.

108 calculators

1% Rule CalculatorCheck whether a rental property's monthly rent meets the 1% rule screening heuristic.401(k) Loan CalculatorEstimate the cost and repayment of borrowing from your 401(k).529 / College Savings CalculatorProject your 529 balance against the real, inflation-adjusted cost of college.Aircraft Loan CalculatorEstimate payments and total interest on an aircraft loan.Annuity Payment CalculatorCalculate the payment amount from a fixed annuity.Annuity Rate of Return CalculatorFind the effective rate of return on an annuity.APR CalculatorCalculate the annual percentage rate of a loan including fees.APY CalculatorConvert an interest rate to annual percentage yield with compounding.ATV Loan CalculatorEstimate monthly payments and interest on an ATV or off-road vehicle loan.Auto Loan CalculatorEstimate your car payment, total interest, payoff schedule, and how your vehicle depreciates over the loan.Auto Refinance CalculatorSee whether refinancing your car loan lowers your payment or total interest.Black-Scholes Option Pricing CalculatorPrice a call or put and see all five Greeks under the Black-Scholes model.Boat Loan CalculatorCalculate payments and total cost for financing a boat.Bond Price CalculatorPrice a bond from its coupon rate, face value, and yield to maturity.Break-Even Point CalculatorFind how many units you need to sell to cover your fixed costs.Budget CalculatorBuild a monthly budget and see where your money goes.Business Loan CalculatorEstimate payments and total cost for a small business loan.Butterfly Spread CalculatorMax profit/loss, breakevens, and probability of profit for a 4-leg butterfly spread.Cap Rate CalculatorA fast net operating income over value screening tool for rental property deals.Cash-Secured Put CalculatorSee your yield on collateral, breakeven, and effective cost basis if assigned.CD CalculatorCalculate interest earned on a certificate of deposit.Charitable Lead Trust (CLT) CalculatorEstimate the taxable gift value and zero-out payout rate for a charitable lead annuity or unitrust (CLAT/CLUT).Charitable Remainder Annuity Trust (CRAT) CalculatorModel income and tax benefits of a charitable remainder annuity trust (CRAT).Charitable Remainder Trust Factor LookupLook up the exact IRS remainder factor behind a CRUT or CRAT deduction, cross-checked against the official actuarial tables.Charitable Remainder Unitrust (CRUT) CalculatorModel income and tax benefits of a charitable remainder unitrust (CRUT).Charitable Tax Deduction CalculatorEstimate the tax savings from a charitable donation.Closing Costs CalculatorItemize lender, title, and government fees to see the total cash you'll need at closing.Compound Interest CalculatorSee how a lump sum and regular contributions grow with compounding over time.Covered Call CalculatorSee your return if called away, return if unchanged, breakeven, and annualized yield.Credit Card Payoff CalculatorSee how long it takes to pay off credit card debt and how much interest you'll save.Debt Snowball vs. Avalanche CalculatorCompare payoff order strategies across multiple debts to see which saves the most interest.Debt-to-Income Ratio CalculatorCheck your front-end and back-end DTI before you borrow.Depreciation CalculatorCalculate asset depreciation using straight-line or declining balance.Disability Insurance CalculatorEstimate how much disability income coverage you need.Dividend Yield CalculatorCalculate a stock's dividend yield and the income a given share count produces.Donor Advised Fund (DAF) CalculatorCompare funding a DAF with appreciated securities against selling and giving cash outright.DRIP CalculatorProject share count and portfolio value with dividends reinvested versus taken as cash.Electricity Cost CalculatorSee what it costs to run a single device per day, month, and year based on its wattage and your electricity rate.Emergency Fund CalculatorSee how long it'll take to build a fully funded emergency fund at your savings rate.Extra Mortgage Payment & Biweekly CalculatorSee how much interest and time you'd save paying extra or switching to biweekly payments.Farmland Investment CalculatorAnalyze the value and return of farmland as an investment.Federal Income Tax Bracket CalculatorSee your marginal and effective federal tax rate, and a full bracket-by-bracket breakdown, for 2025 or 2026.Fibonacci Arc CalculatorFind where the 38.2%, 50%, and 61.8% Fibonacci arcs cross at a future bar, based on a swing high and low.Fibonacci Confluence CalculatorCheck which Fibonacci retracement and extension levels line up with round numbers, moving averages, or other levels you're watching.Fibonacci Extension CalculatorProject price targets beyond a swing move using the 127.2%, 161.8%, 200%, and 261.8% extension levels.Fibonacci Fan CalculatorProject the 38.2%, 50%, and 61.8% diagonal Fibonacci fan trendlines forward from a swing high and low.Fibonacci Retracement CalculatorFind the standard 23.6%, 38.2%, 50%, 61.8%, and 78.6% retracement price levels from a swing high and swing low.Fibonacci Risk/Reward CalculatorCombine a Fibonacci retracement entry and extension target with a stop-loss to get a risk/reward ratio and position size.Fibonacci Time Zone CalculatorProject Fibonacci sequence bar counts forward from a starting date to find upcoming dates traders watch for a potential reversal.First-Time Home Buyer Cost CalculatorCompare total cash needed and monthly payment across common down payment tiers, including PMI.Fixed Annuity vs. Bank CD CalculatorCompare returns from a fixed annuity against a bank CD.Future Value CalculatorSee what a lump sum invested today will grow to.Future Value of an Annuity CalculatorSee what a series of equal periodic contributions grows to.Golden Ratio Position Sizing CalculatorScale a series of position entries up or down by the golden ratio (1.618), a technique sometimes called Fibonacci pyramiding.Gross Rent Multiplier (GRM) CalculatorPrice divided by gross annual rent, and its inverse, gross rental yield.Home Affordability CalculatorFind the maximum home price you can likely afford before you start shopping.Home Equity Loan & HELOC CalculatorSee your available equity and estimate payments for a home equity loan or HELOC.Home Loan CalculatorCalculate your principal-and-interest mortgage payment, amortization schedule, and home value growth.Home Rent vs Buy CalculatorCompare ending net worth from buying a home versus renting and investing the difference.Implied Volatility CalculatorBack out the volatility a quoted option price implies, plus the Greeks at that volatility.Inflation CalculatorSee what an amount of money in one year is worth in another, using historical BLS CPI-U data back to 1913.Interest Rate / Rate of Return CalculatorSolve for the rate that connects a starting balance, contributions, and an ending value.Iron Condor CalculatorProbability of profit, max risk/reward, and breakevens for a 4-leg iron condor.kWh Bill EstimatorEstimate your monthly electric bill by adding up the running cost of multiple household devices.Land Loan CalculatorCalculate payments and interest for financing raw or improved land.Land Rent Rate of Return CalculatorFull rate-of-return pro-forma for renting out land — cash flow, NPV, and before/after-tax IRR.Life Expectancy CalculatorEstimate remaining life expectancy from IRS Table 2010CM or the SSA's 2021 Period Life Table.Loan Amortization CalculatorGenerate a full amortization schedule for any fixed-rate loan.Mortgage APR CalculatorFind the true APR of a mortgage including points and fees.Mortgage Refinance CalculatorCompare your current mortgage to a refinance and find the break-even point.Motorcycle Loan CalculatorEstimate monthly payments and interest on a motorcycle loan.Multi-Leg Greeks CalculatorSee combined Delta, Gamma, Theta, Vega, and Rho across an entire multi-leg options position.Municipal Bond CalculatorCalculate the tax-equivalent yield and return of a municipal bond.Net Worth CalculatorAdd up assets and liabilities to find your net worth.NPV & IRR CalculatorCalculate net present value and internal rate of return for cash flows.Number of Periods CalculatorSolve for how many periods it takes to reach a savings or investment target.Options Profit/Loss CalculatorChart profit and loss at expiration for any single- or multi-leg options position, with exact breakevens.P/E Ratio CalculatorCalculate a stock's price-to-earnings ratio and earnings yield.Payback Period CalculatorFind how long an investment takes to recoup its initial cost.Payment CalculatorThe general TVM engine behind loan payments: solve for the periodic payment given PV, FV, rate, and term.PEG Ratio CalculatorCalculate a stock's PEG ratio to judge its P/E against expected earnings growth.Percentage CalculatorFind a percent of a number, what percent one number is of another, percent change, or the original number behind a percentage.Personal Loan CalculatorEstimate payments and total cost on a fixed-rate personal loan.Position Size CalculatorSize a trade from a fixed percentage of account risk and your stop-loss distance.Present Value CalculatorDiscount a future lump sum back to what it's worth today.Present Value of an Annuity CalculatorValue a stream of equal future payments in today's dollars.Probability of Profit (POP) CalculatorEstimate the odds an options position finishes profitable at expiration, for any single- or multi-leg strategy.Protective Put / Collar CalculatorSee your downside floor, upside cap, and breakeven for a protective put or a collar.Rental Property CalculatorFull rental property pro-forma — cash flow, NPV, and before/after-tax IRR with financing, depreciation, taxes, and a hypothetical sale.Retirement CalculatorSee if you're on track to retire, in today's dollars and with employer match.Roth Conversion CalculatorCompare converting a Traditional balance to Roth today against leaving it Traditional.Roth vs. Traditional IRA CalculatorCompare after-tax outcomes of a Roth IRA versus a Traditional IRA.Rule of 72 CalculatorEstimate how long it takes an investment to double.RV Loan CalculatorCalculate payments and total cost for financing a recreational vehicle.Sales Tax CalculatorAdd or remove sales tax from a price.Savings Goal CalculatorSee how much you need to save per month to hit a target amount by a target date.Sharpe Ratio CalculatorCompute Sharpe and Sortino ratios directly from a pasted return series, with an optional benchmark comparison.Short Sale CalculatorProfit/loss and return on margin for a short sale, including stock borrow fees.Simple Interest CalculatorCalculate interest on the original principal only, with no compounding.Stock Return / CAGR CalculatorTotal return and compound annual growth rate for a stock holding, including dividends.Straddle/Strangle CalculatorBreakevens and the implied move needed for a long or short straddle or strangle, useful for earnings plays.Student Loan CalculatorProject repayment timelines and interest on student loans.Tax-Equivalent Yield CalculatorCompare taxable and tax-free yields on an equal footing.Tip CalculatorCalculate the tip and split a bill across people.VA Loan CalculatorEstimate payments on a VA home loan, including the funding fee.Vertical Spread CalculatorMax profit/loss, breakeven, and probability of profit for bull/bear call and put spreads.Wheel Strategy SimulatorSimulate cycling cash-secured puts and covered calls over multiple cycles.Yield to Maturity CalculatorCalculate the yield to maturity of a bond.

Accurate math

Built on standard financial formulas — amortization, NPV/IRR, compounding, and more.

No account, no ads in your way

Every calculator is free and runs instantly in your browser. Nothing to install or sign up for.

Your numbers stay yours

Calculations run on your device. We don't send or store the figures you enter.

Can't find what you need?

Browse the full catalog by category or get in touch to request a new calculator.