Calculator library
Free calculators for everyday money decisions.
Start with a focused tool, then use the plain-English notes to understand what the numbers mean. All calculators run in your browser — no sign-up, no data collected.
Debt Payoff Calculator
Estimate payoff time, total interest, and the effect of extra monthly payments.
Open calculator BorrowingDebt-to-Income Ratio Calculator
Estimate current DTI and test how a proposed housing payment could change it.
Open calculator Credit cardsCredit Card Payoff Calculator
Estimate payoff time and interest cost for a credit card balance.
Open calculator SavingsEmergency Fund Calculator
Calculate a practical emergency fund range from your essential monthly expenses.
Open calculator GoalsSavings Goal Calculator
Find the monthly savings needed to reach a target amount by a deadline.
Open calculator BudgetMonthly Budget Calculator
Allocate income across bills, savings, debt, and flexible spending.
Open calculator HomeExtra Payment Mortgage Calculator
Compare mortgage payoff dates and interest savings from extra mortgage payments.
Open calculator TrackingNet Worth Calculator
Add assets and liabilities to estimate your current financial snapshot.
Open calculator Retirement401(k) Contribution Calculator
Estimate annual contributions, catch-up limits, and employer match.
Open calculator RetirementRoth vs Traditional IRA Calculator
Compare simplified after-tax values using tax rate and return assumptions.
Open calculator HousingRent vs Buy Calculator
Compare simplified renting and homebuying costs over a time period.
Open calculator Health benefitsHSA Contribution Calculator
Estimate HSA limits, employer contributions, catch-up room, and possible tax savings.
Open calculator Auto debtAuto Loan Payoff Calculator
Estimate car loan payoff time, total interest, and savings from extra payments.
Open calculator Student debtStudent Loan Payoff Calculator
Estimate student loan payoff time, interest cost, and savings from extra payments.
Open calculator RetirementRetirement Savings Goal Calculator
Estimate a retirement nest egg target, projected savings, and monthly contribution needed.
Open calculator Retirement incomeRetirement Income Withdrawal Calculator
Estimate how long retirement savings may last with withdrawals and inflation.
Open calculator InvestingTaxable Investment Growth Calculator
Estimate taxable account growth, tax drag, capital gains tax, and after-tax value.
Open calculator BusinessAI ROI Calculator
Estimate AI workflow time savings, monthly costs, payback period, and first-year ROI.
Open calculator Social SecuritySocial Security Break-Even Calculator
Compare claiming ages, cumulative benefits, and a simple break-even age.
Open calculator InflationInflation and COLA Impact Calculator
Estimate future costs, COLA-adjusted value, and purchasing power gaps.
Open calculator Retirement healthcareHealthcare Cost in Retirement Calculator
Estimate premiums, prescriptions, out-of-pocket care, inflation, and income share.
Open calculator Long-term careLTC Calculator
Estimate care costs, inflation, insurance benefits, income offsets, and funding gaps.
Open calculatorPair with guides
Every tool comes with a plain-English explanation.
Prefer to understand the concept before running numbers? Browse the guide library.