How to calculate Fixed Deposit (FD) maturity amount?
You can use websites like these Compound Interest Calculator | Investor.gov
Where you can input all the values, and your approximate return will be calculated.
I hope this will do the job.
Determining the interest manually can be slow and inclined to blunders. Here is the equation for build interest, including the principal sum:
A = P (1 + r/n) ^ (nt)
Where, A = Maturity sum, including interest
P = the principal sum
r = the yearly interest rate (decimal)
n = the number of times that interest is accumulated per unit t
t = the tenure of the speculation