Financial calculator

Loan Calculator

Calculate monthly payment, total interest, and full loan cost using the standard amortization formula.

Monthly payment
Total interest
Total paid

Loan Calculator — Monthly Payment and Total Interest

Calculate monthly payment, total interest paid, and full amortization schedule. Uses the standard annuity formula.

What it calculates

  • Monthly payment
  • Total amount paid
  • Total interest (overpayment)
  • Amortization schedule
  • Rate and term

When useful

  • Mortgages
  • Auto loans
  • Personal loans
  • Credit cards
  • Leasing

FAQ

What formula?
Standard annuity: P = S × i × (1+i)ⁿ / ((1+i)ⁿ - 1).

Are prepayments considered?
Not in this version. Calculation assumes regular monthly payments.

Is it safe?
Yes, all local.