Compound Interest Calculator

Calculate the power of compound interest with different frequencies and regular contributions.

Investment Parameters

Future Value

$1,628.89

Total Interest

$628.89

Total Contributions

$1,000.00

Effective Rate

5.00%

Year-by-Year Breakdown

Year Total Value Contributions Interest Earned
0 $1,000.00 $1,000.00 $0.00
1 $1,050.00 $1,000.00 $50.00
2 $1,102.50 $1,000.00 $102.50
3 $1,157.63 $1,000.00 $157.63
4 $1,215.51 $1,000.00 $215.51
5 $1,276.28 $1,000.00 $276.28
6 $1,340.10 $1,000.00 $340.10
7 $1,407.10 $1,000.00 $407.10
8 $1,477.46 $1,000.00 $477.46
9 $1,551.33 $1,000.00 $551.33
10 $1,628.89 $1,000.00 $628.89

Understanding Compound Interest

How It Works

  • • Compound interest is interest earned on both the principal and previously earned interest
  • • More frequent compounding leads to higher returns
  • • Regular contributions can significantly boost your returns
  • • Time is your greatest ally - start investing early

Compounding Frequencies

  • Daily: 365 times per year
  • Monthly: 12 times per year
  • Quarterly: 4 times per year
  • Semi-annually: 2 times per year
  • Annually: Once per year

Formula Used

A = P(1 + r/n)^(nt) + PMT × [(1 + r/n)^(nt) - 1] / (r/n)

Where: A = final amount, P = principal, r = annual rate, n = compounding frequency, t = time, PMT = annual contribution