Interest Calculator
Quickly compute the total interest cost on any credit line, personal loan, or financing arrangement.
Calculation Inputs & Parameters
15000
(Default)
9.5
(Default)
24
(Default)
Total Interest Accrued
$2850.00
Total Repayment
$17850.00
Average Monthly Interest
$118.75
Effective Duration
24 months (2.0 yrs)
How the Calculation Works
Multiplies principal by annual rate and the fraction of the year.
Formula: Interest = Principal × Rate × (Months / 12)
Practical Worked Example
Given Inputs: 10,000 at 10% for 12 months
Calculated Output: Interest: 1,000
- 10,000 × 0.10 × 1 = 1,000.