A fixed deposit locks your money for a set period at a rate fixed in advance. Enter the deposit, the rate, the tenure and how often interest compounds to see the exact maturity value.
How often the bank adds the interest you have earned to your deposit, so it starts earning interest itself. Quarterly compounding is common for fixed deposits; monthly compounding grows slightly faster.
The rate is fixed when you open the deposit, unlike market investments. But early withdrawal usually earns a lower rate, and tax may apply to the interest.
That tool is general-purpose and shows a year-by-year table. This one is shaped exactly like a bank FD: tenure in months or years and the standard compounding frequencies.