Use this free online Fixed Deposit (FD) calculator to estimate the maturity value and interest earned on your bank fixed deposit. Enter the principal amount, annual interest rate, tenure, and compounding frequency to instantly see your maturity amount and total interest earned.
How to Use the Fixed Deposit (FD) Calculator
Enter the amount you're depositing in the "Principal Amount (₹)" field.
Enter the rate offered by your bank in the "Annual Interest Rate (%)" field.
Enter how long the deposit will stay locked in in the "Tenure (years)" field.
Choose how often interest compounds — Annually, Half-Yearly, Quarterly, or Monthly — from the "Compounding Frequency" dropdown.
Click "Calculate FD" to view your Maturity Amount and Total Interest Earned.
Frequently Asked Questions
It uses the standard compound interest formula: Maturity Amount = P × (1 + r/(100×n))^(n×t), where P is the principal, r is the annual interest rate, n is the compounding frequency per year (1, 2, 4, or 12), and t is the tenure in years. Total Interest Earned is the maturity amount minus the principal.
The more frequently interest compounds — Monthly instead of Annually, for example — the higher your maturity amount will be for the same principal, rate, and tenure, since interest is calculated and added to the principal more often.
Principal Amount and Tenure must be greater than zero, the Annual Interest Rate must be zero or greater, and Compounding Frequency must be a positive value chosen from the dropdown. If any condition isn't met, the calculator shows "Invalid input! Please enter valid positive values for all fields."
Yes, this FD calculator is completely free with no sign-up required, and you can recalculate as many times as you like with different rates, tenures, or compounding options.