Compound Interest Calculator

Compounding Interest Calculator

Compounding Interest Calculator Features :

Calculate Accrued Amount (Principal + Interest)
A = P(1 + r/n)nt
Calculate Principal Amount, solve for P
P = A / (1 + r/n)nt
Calculate rate of interest in decimal, solve for r
r = n[(A/P)1/nt - 1]
Calculate rate of interest in percent
R = r * 100
Calculate time, solve for t
t = ln(A/P) / n[ln(1 + r/n)] = [ ln(A) - ln(P) ] / n[ln(1 + r/n)]

Where:

A = Accrued Amount (principal + interest)
P = Principal Amount
I = Interest Amount
R = Annual Nominal Interest Rate in percent
r = Annual Nominal Interest Rate as a decimal
r = R/100
t = Time Involved in years, 0.5 years is calculated as 6 months, etc.
n = number of compounding periods per unit t; at the END of each period

Example Compounding Interest Accrued Amount (principal + interest) Calculation :

I have an investment account that increased from $300 over 60 months. If my local bank offers savings account with daily compounding (365), annual interest rate is 5%, what Accrued Amount (Principal + Interest)?

In the Compounding Interest calculator select "Accrued Amount (Principal + Interest)". The equation the calculator will use is: A = P(1 + r/n)nt

Enter:
Principal (P): $300
Compound (n): Daily (365)
Time (t): 5 years (5 years is 60 months)
Interest Rate (R): 5% per year

Your Ans is A = $ 385.20

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