Finance calculators
Plan loans, pay off debt faster, estimate take-home pay, and project savings. Every result is computed with verified formulas and a transparent, shareable breakdown.
17 calculators
Loan
Monthly payment and a full amortization schedule for any loan.
OpenCompound interest
Project how regular investing grows over time.
OpenTake-home pay
Turn gross salary into net pay after tax and deductions.
OpenPaycheck
Convert between hourly wage and annual salary.
OpenRetirement / FIRE
Find your number and when you could reach it.
Open401(k)
Your contribution plus the employer match you earn.
OpenSavings goal
The monthly amount to save to reach a goal by a date.
OpenDebt payoff
Plan the fastest or cheapest way out of multiple debts.
OpenCard payoff
How long to clear a card, and the payment to clear it by a date.
OpenInflation
What money is worth over time at a given inflation rate.
OpenRefinance
See whether refinancing is worth it and when you break even.
OpenRefi vs new
Compare keeping, refinancing, or taking a new loan side by side.
OpenCurrency
Convert between currencies with clear rounding.
OpenNet worth
Add up assets and liabilities to see where you stand.
OpenROI
Return on investment, annualized growth, and payback period.
OpenSelf-employment tax
Estimate self-employment tax and quarterly payments.
OpenLease vs buy
Compare financing a car against leasing it.
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