Boneyard Tools

Finance Calculators

Money math made simple: loans, interest, savings, tax and retirement calculators with clear breakdowns.

Finance Calculators

401(k) Calculator

Project your 401(k) balance with employer match. Enter salary, contribution, match and return to see your contributions, the match and growth over time.

Finance Calculators

Amortization Schedule Calculator

Build a full loan amortization schedule. Enter the amount, rate and term to see each month's payment, principal, interest and balance, plus total interest.

Finance Calculators

Annuity Calculator

Calculate the present and future value of an annuity. Enter a payment, rate per period and number of periods for ordinary or annuity due timing.

Finance Calculators

APR to APY Calculator

Convert APR to APY or APY to APR for any compounding frequency. Enter a rate and how often it compounds to see the effective annual yield.

Finance Calculators

Auto Lease Calculator

Estimate your monthly car lease payment from the negotiated price, residual, money factor and term. See depreciation, finance charge and total lease cost.

Finance Calculators

Bill Split Calculator

Free bill split calculator. Enter the bill, add tax and tip, set how many people are paying and see the total and the exact amount each person owes.

Finance Calculators

Black-Scholes Calculator

Price European call and put options with the Black-Scholes model. Get the fair value plus delta, gamma, theta, vega and rho from your own inputs.

Finance Calculators

Bond YTM Calculator

Calculate a bond's yield to maturity from its price, face value, coupon and years left. See YTM, current yield and whether it trades at a discount or premium.

Finance Calculators

Budget Planner

Plan a monthly budget with the 50/30/20 rule. Enter your income and expenses to see needs, wants and savings versus the recommended split.

Finance Calculators

CAGR Calculator

Calculate the compound annual growth rate of an investment. Enter the beginning value, ending value and number of years to get CAGR instantly.

Finance Calculators

Capital Gains Tax Calculator

Estimate 2025 US capital gains tax on a sale. Enter buy and sell prices, holding period, income and filing status to see your gain, rate and net proceeds.

Finance Calculators

Car Loan Calculator

Estimate your monthly car payment. Enter the vehicle price, down payment, trade-in, interest rate and term to see the loan amount and total interest.

Finance Calculators

CD Ladder Calculator

Build a CD ladder online. Split your cash across rungs with their own term and APY to see each maturity value, total interest and a blended APY.

Finance Calculators

College Savings Calculator

Project a 529 plan. Enter your child's age, current savings, monthly contribution and college costs to see your funding gap and monthly target.

Finance Calculators

Compound Interest Calculator

Calculate compound interest online. Enter a principal, rate, term and compounding frequency to see the final amount, total interest and year by year growth.

Finance Calculators

Credit Card Payoff Calculator

Find out how many months it takes to pay off a credit card and the total interest. Enter your balance, APR and monthly payment to see the plan.

Finance Calculators

Crypto Cost Basis Calculator

Work out the cost basis and capital gain on a crypto sale. Add your buys, set the sale, and compare FIFO, LIFO, HIFO and average cost methods.

Finance Calculators

Debt Payoff Calculator

Compare the debt snowball and avalanche methods. Add your balances, rates and an extra payment to see months to debt free and total interest.

Finance Calculators

Debt Snowball vs Avalanche Planner

Plan your debt payoff with the snowball or avalanche method. Add balances, rates and an extra payment to see months to debt free and total interest.

Finance Calculators

Dividend Reinvestment Calculator

Calculate how reinvested dividends compound. Enter your investment, dividend yield and time horizon to project the final value, dividends and yearly growth.

Finance Calculators

Dividend Yield Calculator

Calculate dividend yield from a share price and annual dividend, then see the annual and monthly income your holding would generate.

Finance Calculators

Dollar Cost Averaging Calculator

Calculate dollar cost averaging returns. Enter a fixed amount and the price each period to see shares bought, average cost, final value and return.

Finance Calculators

Down Payment Calculator

Work out your home down payment and loan amount. Enter a price and a percent or dollar amount to see the cash needed and whether PMI is likely.

Finance Calculators

Emergency Fund Calculator

Work out how big your emergency fund should be and how long it takes to get there. Enter monthly expenses, a target and your savings.

Finance Calculators

EMI Calculator

Calculate your loan EMI online. Enter the loan amount, interest rate and tenure to see the monthly payment, total interest and a yearly schedule.

Finance Calculators

FD Calculator

Calculate fixed deposit maturity online. Enter your deposit amount, interest rate, tenure and compounding to see the maturity value and interest earned.

Finance Calculators

FIRE Calculator

Work out your FIRE number and years to financial independence. Enter expenses, savings, contributions and return to see lean, regular and fat FIRE targets.

Finance Calculators

Freelance Rate Calculator

Work out the hourly and day rate to charge as a freelancer. Set your target income, expenses, billable hours and tax to see the rate you need.

Finance Calculators

GST Calculator

Free GST calculator. Add GST to a net price or remove GST from a gross price at 5, 12, 18 or 28 percent and see the net, tax and total instantly.

Finance Calculators

Home Loan Calculator

Calculate your home loan EMI, total interest and total payment. Enter the loan amount, interest rate and tenure to see a yearly amortization schedule.

Finance Calculators

Hourly to Salary Calculator

Convert an hourly wage to a yearly salary. Enter your hourly rate, hours per week and weeks per year to see annual, monthly, biweekly and weekly pay.

Finance Calculators

HSA Calculator

Estimate your Health Savings Account tax savings and future balance. Enter contributions, tax rate, years and return to see growth and total tax saved.

Finance Calculators

Income Tax Calculator

Estimate your 2025 US federal income tax. Enter income and filing status to see taxable income, tax owed, effective rate and take-home pay.

Finance Calculators

Inflation Calculator

See how inflation raises prices and erodes purchasing power. Enter an amount, an average annual rate and the years to get the future cost and real value.

Finance Calculators

Loan Calculator

Free loan calculator. Enter the amount, interest rate and term in years or months to see your monthly payment, total interest and a full payoff schedule.

Finance Calculators

Loan Comparison Calculator

Compare two or three loan offers side by side. Enter each amount, rate, term and fees to see the monthly payment, total interest and true total cost.

Finance Calculators

Lumpsum Calculator

Calculate the future value of a one-time investment. Enter the amount, expected annual return and years to see the maturity value, invested amount and gains.

Finance Calculators

Mortgage Affordability Calculator

See how much house you can afford. Enter income, debts, down payment, rate and term to estimate your max home price using the 28/36 rule.

Finance Calculators

Mortgage Calculator

Estimate your monthly mortgage payment. Enter home price, down payment, interest rate and term to see principal, interest and a full amortization table.

Finance Calculators

Mortgage Payoff Calculator

See how much faster you pay off your mortgage and how much interest you save by adding extra to your monthly payment. Enter your balance, rate and term.

Finance Calculators

Mortgage Recast Calculator

See your new payment after a mortgage recast. Apply a lump sum and re-amortize over the same term to find your monthly savings and interest saved.

Finance Calculators

Net Worth Calculator

Calculate your net worth in seconds. List your assets and liabilities to see total assets, total debts and your net worth, with live totals.

Finance Calculators

NPV / IRR Calculator

Calculate net present value and internal rate of return from a series of cash flows. Enter each year's amount and a discount rate to see NPV and IRR.

Finance Calculators

Options Profit Calculator

Calculate profit, loss and breakeven for a single-leg call or put at expiration. See max profit, max loss and a full payoff table across prices.

Finance Calculators

Paycheck Calculator

Estimate your 2025 take-home pay. Enter salary, filing status and pay frequency to see federal tax, Social Security and Medicare per paycheck.

Finance Calculators

Personal Loan Calculator

Calculate your personal loan monthly payment, total interest and payoff. Enter the loan amount, interest rate and term in months to see a full breakdown.

Finance Calculators

RD Calculator

Calculate recurring deposit maturity online. Enter your monthly deposit, interest rate and tenure to see the maturity amount, total deposited and interest.

Finance Calculators

Refinance Breakeven Calculator

See how many months it takes a mortgage refinance to pay for itself. Enter your current loan, the new rate and closing costs to get your breakeven point.

Finance Calculators

Refinance Calculator

See if refinancing your loan is worth it. Compare monthly payments, find your break-even point on closing costs, and check your lifetime savings.

Finance Calculators

Rent vs Buy Calculator

Compare renting and buying a home over the years you plan to stay. See the total cost of each, the cheaper option and the break-even year.

Finance Calculators

Rental Property ROI Calculator

Analyze a rental property. Enter price, rent and expenses to see cap rate, cash-on-cash return, monthly cash flow, NOI and total cash invested.

Finance Calculators

Retirement Calculator

Project your retirement savings from your current pot plus monthly contributions. See the corpus at retirement, total invested and growth from returns.

Finance Calculators

Retirement Drawdown Calculator

See how long your retirement savings last. Model yearly withdrawals with inflation and returns to find the depletion year and ending balance.

Finance Calculators

ROI Calculator

Calculate return on investment online. Enter the cost and final value to get your ROI percentage, net profit and an annualized return over any period.

Finance Calculators

Roth vs Traditional Calculator

Compare Roth and Traditional retirement accounts side by side. Enter your contribution, return and tax rates to see which leaves you more after tax.

Finance Calculators

Rule of 72 Calculator

Use the Rule of 72 to estimate how long an investment takes to double, or the return rate needed. See the quick estimate next to the exact value.

Finance Calculators

Salary to Hourly Calculator

Convert pay between hourly, weekly, monthly and yearly. Enter an amount, pick the period and set your hours per week to see every equivalent.

Finance Calculators

Sales Tax Calculator

Calculate US sales tax fast. Add tax to a price to get the total, or reverse a tax-inclusive total to find the pre-tax price and tax amount.

Finance Calculators

Savings Goal Calculator

Find the monthly amount to save to hit a goal. Enter your target, time horizon, expected return and current savings to get the contribution.

Finance Calculators

Savings Rate Calculator

Find your savings rate and years to financial independence. Enter take-home income and yearly savings to see your FI number and when you can retire.

Finance Calculators

Simple Interest Calculator

Calculate simple interest free. Enter principal, annual rate and time in years to see the interest earned and the total amount, with no compounding.

Finance Calculators

SIP Calculator

Calculate SIP returns online. Enter your monthly investment, expected return and duration to see the future value, total invested and gains.

Finance Calculators

Stock Average Calculator

Work out the average cost of a stock across multiple buys. Add each purchase to see your cost basis, total shares, and profit or loss.

Finance Calculators

Student Loan Calculator

Free student loan calculator. Enter your balance, interest rate and term to see the monthly payment, total interest and how much an extra payment saves.

Finance Calculators

SWP Calculator

Calculate a systematic withdrawal plan. Invest a lump sum, withdraw a fixed amount monthly and see your final balance, total withdrawn and if it lasts.

Finance Calculators

Take Home Pay Calculator

Estimate your net pay from gross income. Enter an effective tax rate and other deductions to see take home pay, tax and deductions, yearly or monthly.

Finance Calculators

Tip Calculator

Free tip calculator. Enter the bill, pick a tip percent and split between any number of people to see the tip, total and amount each person pays.

Finance Calculators

VAT Calculator

Add or remove VAT from any price. Enter an amount and a rate to see the net, VAT and gross totals. Works for 5%, 15%, 20% and custom rates.