See estimated payoff months and review total interest and first month interest using values you enter.
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Credit Card Interest Calculator for United States
USD · 12,345.67US customary measurementsRoad distance: miles
United States planning scenario. Amounts, prices and rates are editable examples. No verified local tax bands, exemptions, benefits or lender rules are applied. Currency amounts are not exchanged.
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Your details
USD
Example only. Enter the amount or rate applicable to your situation in United States.
%
Example only. Enter the amount or rate applicable to your situation in United States.
USD
Example only. Enter the amount or rate applicable to your situation in United States.
USD
Example only. Enter the amount or rate applicable to your situation in United States.
Estimated payoff months
29
Amounts in USD · United States · editable planning estimate
Total interest$1,184.55
First month interest$73.33
Monthly payment$180.00
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How this result was calculated
Each month add balance × APR / 12 and new charges, then subtract the monthly payment. Continue until payoff. The payment must cover initial interest and new charges; results beyond the 100-year simulation limit are rejected.
Country setup: United States. Displayed measurements are converted to the formula's base units internally.
Assumption: Uses the entered amounts and the units shown. Sample prices, rates and allowances are editable examples, not local quotes or verified tax rules. United States planning scenario. Amounts, prices and rates are editable examples. No verified local tax bands, exemptions, benefits or lender rules are applied. Currency amounts are not exchanged.
Calculation version 1.0.0 · Support state: generic
Formula and method
Each month add balance × APR / 12 and new charges, then subtract the monthly payment. Continue until payoff. The payment must cover initial interest and new charges; results beyond the 100-year simulation limit are rejected.
This calculation uses the values you enter. It runs in your browser and does not request a location or account.
Worked example
With the sample inputs shown, estimated payoff months is 29. Change the inputs to model your own case.
Questions people ask
How does the credit card interest calculator work?
Each month add balance × APR / 12 and new charges, then subtract the monthly payment. Continue until payoff. The payment must cover initial interest and new charges; results beyond the 100-year simulation limit are rejected.
Does this use live local rates or rules?
Uses the entered amounts and the units shown. Sample prices, rates and allowances are editable examples, not local quotes or verified tax rules.