EMI Calculator
Compute equated monthly installments and lifetime interest cost.
Your numbers
Breakdown
Cumulative principal vs interest paid
How this calculator works
EMI — equated monthly installment — is the fixed amount you pay every month until a loan is fully repaid. It is the standard repayment structure for home loans, car loans and personal loans in the US, India, the UK and beyond. The math is identical to loan amortization: a formula converts your loan amount, annual rate and tenure into one flat monthly figure, with each installment split between interest on the outstanding balance and principal reduction.
This EMI calculator goes beyond the monthly number. The cumulative chart tracks how much principal you have repaid versus how much interest you have paid at each year — the crossover point where principal finally overtakes interest is eye-opening on long loans. The donut shows the lifetime split: on a 30-year loan at typical rates, interest can exceed half of everything you pay. Before you commit, compare a shorter tenure (higher EMI, far less interest) against a longer one, and check whether a part-prepayment early in the loan — when the interest portion is largest — makes sense for you.