Free Compound Interest Calculator
Calculate future investment growth, total interest earned, and long-term portfolio accumulation.
Investment Presets
| Year | Total Principal | Interest Earned | Portfolio Balance |
|---|---|---|---|
| Year 1 | $13,600 | $926 | $14,526 |
| Year 2 | $17,200 | $2,203 | $19,403 |
| Year 3 | $20,800 | $3,859 | $24,659 |
| Year 4 | $24,400 | $5,923 | $30,323 |
| Year 5 | $28,000 | $8,427 | $36,427 |
| Year 6 | $31,600 | $11,405 | $43,005 |
| Year 7 | $35,200 | $14,893 | $50,093 |
| Year 8 | $38,800 | $18,931 | $57,731 |
| Year 9 | $42,400 | $23,563 | $65,963 |
| Year 10 | $46,000 | $28,833 | $74,833 |
| Year 11 | $49,600 | $34,793 | $84,393 |
| Year 12 | $53,200 | $41,494 | $94,694 |
| Year 13 | $56,800 | $48,995 | $105,795 |
| Year 14 | $60,400 | $57,358 | $117,758 |
| Year 15 | $64,000 | $66,649 | $130,649 |
| Year 16 | $67,600 | $76,941 | $144,541 |
| Year 17 | $71,200 | $88,312 | $159,512 |
| Year 18 | $74,800 | $100,845 | $175,645 |
| Year 19 | $78,400 | $114,631 | $193,031 |
| Year 20 | $82,000 | $129,766 | $211,766 |
Harnessing the Exponential Power of Compound Interest
A compound interest calculator is an indispensable wealth-building utility for investors, retirement planners, and savers. Often described as the eighth wonder of the world, compounding allows your money to earn interest on both your initial principal deposit and all previously accumulated interest earnings over time.
The Critical Factor of Time & Regular Contributions
When investing in index funds, high-yield savings accounts, or retirement portfolios (IRAs and 401ks), two variables dominate your final account balance: time horizon and contribution consistency. Starting early—even with modest monthly amounts—allows interest compounding to snowball exponentially over 20 to 30 years.
Frequently Asked Questions — Compound Interest Calculator
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