About the Loan Calculator
The Loan Calculator helps you estimate your monthly payments, total interest, and overall loan cost before you borrow. Whether you are planning for a personal loan, car loan, or home loan, this tool shows how different loan terms, interest rates, and repayment periods affect your budget.It simplifies financial planning by helping you compare repayment options and choose the most affordable plan. For detailed home loan estimates, you can calculate your repayment terms to make smarter borrowing decisions with confidence
Loan Calculator Formula
The Loan Calculator uses a standard loan amortization formula to calculate your monthly payment (EMI), total interest, and overall loan amount over time. It considers three key factors: the loan amount, interest rate, and repayment term.
Loan Payment Formula
EMI = [P × r × (1 + r)ⁿ] ÷ [(1 + r)ⁿ – 1]
- EMI = Monthly loan payment
- P = Principal loan amount
- r = Monthly interest rate (annual rate ÷ 12 ÷ 100)
- n = Total number of monthly payments
Example Calculation
If you take a $10,000 loan at an 8% annual interest rate for 3 years (36 months),Then your monthly interest rate is:
r = 0.08 ÷ 12 = 0.0067
EMI = [10,000 × 0.0067 × (1 + 0.0067)³⁶] ÷ [(1 + 0.0067)³⁶ – 1]
- Your monthly payment will be around $313, and your total repayment will be approximately $11,268. That means you'll pay about $1,268 in interest over 3 years
Now plug these values into the formula:
Reference: Monthly Payment per $10,000 Borrowed
A quick way to sanity-check any loan offer: scale these per-$10,000 payments to your amount. Borrowing $20,000? Double the number. All figures use the same amortization formula as this calculator, with monthly payments:
| APR | 3-year term | 5-year term | Total interest (5-yr) |
|---|---|---|---|
| 5% | $299.71 / mo | $188.71 / mo | $1,323 |
| 7% | $308.77 / mo | $198.01 / mo | $1,881 |
| 9% | $318.00 / mo | $207.58 / mo | $2,455 |
| 12% | $332.14 / mo | $222.44 / mo | $3,347 |
Notice the pattern: stretching from 3 to 5 years cuts the monthly payment by roughly a third, but the 5-year column's total interest is about 1.7× higher at every rate. The cheapest loan is almost always the shortest one you can comfortably afford.
Why It Matters
Understanding your monthly loan payment helps you budget effectively and avoid over-borrowing. You can experiment with different combinations of loan amounts, interest rates, and repayment periods to find the one that best fits your financial goals.
If you are calculating home loan or property payments, use our tool to get precise, mortgage-specific repayment results with the Mortgage Calculator.