Compound Interest Calculator

Compute FV with compounding and optional periodic contributions.

Principal

Initial amount (e.g., 100000).

Annual Interest Rate (%)

Enter a percent (e.g., 5 means 5%).

Compounding Frequency (per year)

Years

Total time in years (e.g., 10).

Contribution per Period

Optional; can be 0.

Contribution Timing

End of period

Beginning of period