Guide
How Loan EMI Is Calculated (and How to Read It)
Understand the EMI formula, how interest and principal split over time, and how to compare loan offers.
Updated September 10, 2026
An EMI (equated monthly instalment) is the fixed monthly payment that repays a loan over a set term. An EMI calculator shows the monthly payment, total interest, and overall cost so you can compare loans before borrowing.
The EMI formula
EMI = P × r × (1+r)ⁿ ÷ ((1+r)ⁿ − 1)
Where P is the loan principal, r is the monthly interest rate (annual rate ÷ 12 ÷ 100), and n is the number of monthly payments. The formula keeps each payment identical while the interest/principal split shifts over time.
How interest and principal split
Early payments are mostly interest because the outstanding balance is large. As the principal is paid down, each payment shifts toward principal. By the end of the term, almost the entire payment is principal. This is why early repayment saves a lot of interest.
How to use the calculator
- Enter the loan amount (principal).
- Enter the annual interest rate.
- Enter the term in months or years.
- Read the monthly EMI, total interest, and total payable.
Examples
A $20,000 loan at 9% annual interest over 5 years (60 months): monthly rate r = 0.0075, EMI ≈ $415. Total paid ≈ $24,900, so total interest ≈ $4,900. Extending the term to 7 years lowers the EMI to about $321 but raises total interest to about $7,000 — a classic trade-off.
When an EMI calculator is useful
- Comparing personal, car, or home loan offers.
- Budgeting for a new loan before committing.
- Seeing how a shorter term affects total interest.
- Planning early repayment to save interest.
Put it into practice
Use the Loan/EMI Calculator right now — free, in your browser, no sign-up required.
Try the Loan/EMI CalculatorMore guides
- How to Unscramble Letters Into Words
- How to Find Anagrams of Any Word
- How to Count Words, Characters and Reading Time Accurately
- How to Find Words by Pattern, Length and Letters
- How to Use a Random Word Generator for Games, Writing and Brainstorming
- How to Count Characters (With and Without Spaces)
- How to Convert Text Between Cases (UPPER, lower, Title, camelCase and More)
- How to Clean Up Messy Text (Spaces, Line Breaks and Whitespace)
Related free tools
More free online utilities that pair well with this one — same-category tools for the same task, plus handy extras from other categories.
More calculators tools
- Mortgage / Amortization CalculatorMortgage payment & full amortization schedule
- Compound Interest / Investment Growth CalculatorProject compound growth with regular contributions
- Age CalculatorCalculate age from any birthdate
- Average CalculatorMean, median, mode & range
- Date Difference CalculatorAdd to dates or find date differences
You might also need
- Anagram SolverFind anagrams of any word
- Background RemoverRemove image backgrounds & make them transparent
- Base64 Encoder / DecoderConvert plain text or images to Base64 strings
- Base64 Image Encoder / DecoderConvert images to Base64 & Base64 back to images
- BMI CalculatorCalculate Body Mass Index from height & weight