Payment calculator

Payment calculatorの使い方

何を計算するか、いつ使うか

Solves a fixed-rate loan個でwhichever numberはunknown: the payment, the amount you can borrow, the time〜repayまたはthe interest rate.です

使い方の手順

1. Choose what〜work out.
2. the other 箱.のFill
3. Read the answerと合計 利息.

各入力項目の意味

• Loan 量, 毎月 payment, 利率, 期間 – these four are needed; the four乗 Threeはthe answer.です

結果の読み方

• The answer – Payment, borrowing 電力, 時刻または利率.
• 利息総額 – Payments minus the 量 借入額.

計算式

Payment = P × r ÷ (1 − (1 + r)^−n). Borrowing = payment × (1 − (1 + r)^−n) ÷ r. 時刻 n = −ln(1 − P × r ÷ payment) ÷ ln(1 + r). The 利率はfound numerically.です

計算例

386.66 20,000 at 6% over 5 years requires a paymentとinterest.のcosts 3,199.36

前提と限界

• Fixed 利率とequal 毎月 payments.

よくある間違い

• Entering a payment thatはsmaller than the 毎月 利息. The loan would never be repaid.です

よくある質問

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