Free debt calculators
Four calculators, no sign-up, no card. Run your numbers and keep the answer, or let Undebtor track it for you afterwards.
Debt-Free Date Calculator
Most usedEnter a balance, a rate and what you pay each month. See the exact month you clear it, and how much sooner an extra €50 gets you there.
Open calculatorAvalanche vs Snowball Calculator
Two ways to order your debts. One is cheaper, the other feels faster. Compare both against your actual numbers instead of the usual advice.
Open calculatorStudent Loan Payoff Calculator
Model a student loan on its own terms: long horizons, low rates, and whether overpaying is worth it at all.
Open calculatorOpportunity Cost Calculator
Pay down the debt or invest the money? Type in one figure and compare clearing that interest against an expected market return.
Open calculatorThese calculators are estimates based on the figures you enter and standard monthly compounding. Your lender may calculate interest differently or apply fees, so always treat their statements as authoritative. Undebtor does not provide financial advice. See our terms.