Free Online Calculators
Free Online Calculators
Accurate, instant calculators for home buying, auto loans, investing, debt payoff, retirement planning, and fitness — no sign-up required.
Always Free
No paywalls, no subscriptions, no account needed.
Fully Private
All calculations run in your browser — nothing stored or sent.
No Sponsored Results
Our numbers come from the math, not from advertisers.
Mortgage Calculator
Monthly payment, amortization schedule, and loan comparison.
AutoAuto Loan Calculator
Monthly car payment with trade-in, taxes, and amortization.
FinanceCompound Interest
Investment growth with contributions, compounding, and inflation.
FinanceDebt Payoff Calculator
Avalanche vs snowball with total interest savings and timeline.
FinanceRetirement Savings
Nest egg target, Social Security, and drawdown modeling.
Mortgage Calculator
Monthly payment, total interest, amortization schedule, extra payments, and loan comparison.
Refinance Calculator
Calculate break-even point and savings from refinancing your existing mortgage.
Affordability Calculator
Find out how much home you can afford based on income, debts, and down payment.
Rent vs. Buy Calculator
Compare the true long-term cost of renting vs. buying a home in your market.
PMI Calculator
Calculate your private mortgage insurance cost and when it will be eliminated.
Home Equity (HELOC)
Calculate available equity and model HELOC or home equity loan payments.
Auto Loan Calculator
Monthly car payment with trade-in, taxes, fees, and amortization schedule.
Lease vs. Buy Calculator
Compare the true cost of leasing vs. buying a vehicle over time.
Car Affordability
Find out how much car you can afford based on income and monthly budget.
Total Cost of Ownership
5-year cost including depreciation, fuel, insurance, maintenance, and financing.
Gas vs. Electric
Calculate the break-even point and long-term savings of an EV vs. gas vehicle.
Compound Interest
Investment growth with monthly contributions, compounding frequency, and inflation adjustment.
Debt Payoff Calculator
Avalanche vs snowball strategy comparison with total interest savings and payoff timeline.
Retirement Savings
4% rule, nest egg target, Social Security, drawdown modeling, and on-track assessment.
BMI + Ideal Weight
Body mass index, ideal weight range, and health category assessment.
Calories & BMR
Daily calorie needs based on age, weight, height, activity level, and fitness goal.
Body Fat %
Estimate body fat percentage using Navy method measurements.
Macro Calculator
Daily protein, carb, and fat targets for your diet and fitness goals.