Loan / EMI Calculator
Calculate the monthly payment (EMI), total interest, payoff date, and amortization breakdown for a fixed-rate loan with optional extra payments.
Interactive tool
Loan details
Optional: extra payment & start date
Result
LiveWhat is a Loan / EMI Calculator?
A loan calculator computes the equated monthly instalment (EMI) for a fixed-rate, fixed-term loan and shows how each payment is split between principal and interest. This calculator handles auto loans, personal loans, student loans, and any other fully-amortising loan, and lets you model the impact of an extra monthly principal payment on the total interest paid and the payoff date.
How to Use the Loan Calculator
- 1Enter the loan amount (principal you are borrowing)
- 2Enter the annual interest rate as a percentage (APR)
- 3Enter the loan term and pick months or years
- 4Optionally add an extra monthly payment to see how much interest and time it saves
- 5Optionally add a start date to see the projected last-payment date
- 6Read the EMI, total interest, total paid, and the year-by-year stacked-area breakdown
Key features
Standard EMI formula
Uses the same PMT formula as Excel, banks, and brokers: rate, term, principal in, EMI out
Extra-payment what-ifs
See how a small extra payment can shave years off the loan and save thousands in interest
Year-by-year area chart
Visualise how the principal-vs-interest split shifts over the life of the loan
Live amortization preview
See the first and last 12 months of the payment schedule alongside the chart
Multi-currency
30+ ISO 4217 currencies with proper symbols and decimals
Locale-aware formatting
Numbers and currencies are formatted using your browser locale
Keyboard shortcuts
Cmd/Ctrl+Enter to copy the summary, Cmd/Ctrl+K to reset
100% private
All math runs in your browser: no loan amounts are ever uploaded or logged
Why Use a Dedicated Loan Calculator?
Spreadsheet PMT functions get the EMI right but rarely show you what happens with extra payments, what each year of payments actually pays down, or when the loan finally clears. This tool wraps the standard formula in a focused UI with charts and a preview table, so you can compare scenarios quickly and make better decisions about how much to borrow and how aggressively to pay it down.
Common use cases
- Compare car-loan offers from different lenders side by side
- Decide between a 3-year and 5-year personal loan
- See how an extra $100/month affects a 30-year mortgage
- Plan student-loan refinancing scenarios with different rates
- Estimate the monthly cash-flow impact of a new business loan
- Project the payoff date for a debt-snowball or avalanche plan
How the EMI formula works
EMI = P × r × (1+r)^n / ((1+r)^n − 1), where P is the principal, r is the monthly interest rate (annual rate / 12), and n is the number of monthly periods. The early payments mostly cover interest because interest accrues on the full outstanding balance; as the balance falls, the interest component shrinks and the principal component grows.
Why extra payments are so powerful
- Extra principal payments are applied directly to the balance, with no interest skim
- Every dollar of extra principal cancels future interest on that dollar for the rest of the loan
- Even small extra payments compound aggressively over a 30-year term
- The earlier you pay extra in the loan, the larger the interest savings
Tips & best practices
Compare APR not "rate"
Lenders quote both nominal rate and APR. APR includes mandatory fees and is the apples-to-apples number: use it as the input to this calculator.
Watch the total paid
A long term lowers the EMI but raises the total interest. Always check the "total paid" line, not just the monthly number.
Round-up extras add up
Rounding the EMI up to the nearest $50 or $100 is a painless way to add an extra principal payment every month.
Variable rates are not modelled
This calculator assumes a fixed rate. For ARM/floating-rate loans, recompute every time the rate adjusts.
PMI / fees / insurance not included
Use the dedicated Mortgage Calculator if you need to layer in property tax, home insurance, or PMI.
Privacy & security
This loan calculator runs entirely in your browser. Loan amounts, rates, and terms never leave your device: no data is uploaded, logged, or shared.
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Frequently Asked Questions
What is EMI and how is it calculated?
EMI (Equated Monthly Instalment) is the fixed monthly payment that fully repays a loan over a chosen term at a fixed interest rate. It is calculated using the standard PMT formula: EMI = P × r × (1+r)^n / ((1+r)^n − 1), where P is the principal, r is the monthly rate (annual rate ÷ 12), and n is the number of months.
Does the EMI change over the life of the loan?
For a fixed-rate loan, the EMI stays the same every month. What changes is how each payment is split: early payments are mostly interest, later payments are mostly principal. The amortization preview makes this split visible.
How much can I save by paying extra each month?
Extra principal payments cancel future interest on that exact dollar for the remainder of the loan, so even modest extras compound into large savings over a long term. Use the optional "Extra monthly payment" field to see the dollar and time savings for your loan.
Does the calculator handle variable / floating rates?
No. This calculator assumes a fixed rate. For an ARM or floating-rate loan, recompute it whenever the rate adjusts using the new rate and the remaining balance and term.
Does the calculator include taxes, insurance, or fees?
No. It computes pure principal and interest. For a mortgage that needs to include property tax, home insurance, and PMI, use the dedicated Mortgage Calculator.
Is my data sent to a server?
No. Every calculation runs entirely in your browser; no loan amounts, rates, or terms are uploaded, logged, or stored anywhere outside your device.