Calculate compound interest on investments. Enter principal, rate, years, and compounding frequency. See growth over time.
Calculate compound interest on investments. Enter principal, rate, years, and compounding frequency. See growth over time.
A = P(1 + r/n)^(nt) where P = principal, r = annual rate, n = compounds per year, t = yearsRetirement savings — $10K + $500/month at 7%: $10,000 initial deposit plus $500/month contributions at 7% annual return over 30 years.
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This calculator provides estimates only and does not constitute financial advice. Actual results may vary. Consult a qualified financial advisor before making financial decisions.
Confusing simple and compound interest
Compound interest grows exponentially faster because you earn returns on previous returns. Simple interest only applies to the original principal.
Ignoring inflation
Real returns = nominal returns minus inflation rate. A 7% return with 3% inflation means your purchasing power grows at roughly 4% per year.
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Calculate mortgage payments for home loans. Get monthly payment, total interest over 15 or 30 years. Free and accurate.
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เครื่องคิดเลขCalculate simple interest on loans or investments. Principal × rate × time. Quick and straightforward calculation.
เครื่องคิดเลขCalculate future savings with monthly deposits and compound interest. Plan for goals with initial deposit and contributions.
เครื่องคิดเลขCalculate investment return and CAGR. Compare initial vs final value. Essential for portfolio analysis.
เครื่องคิดเลขCalculate Return on Investment. Gain divided by cost. Get ROI percentage and net profit. Essential for business decisions.
เครื่องคิดเลข| Year | Total Deposits | Total Interest | Balance |
|---|---|---|---|
| 1 | $12,400.00 | $801.42 | $13,201.42 |
| 2 | $14,800.00 | $1,834.27 | $16,634.27 |
| 3 | $17,200.00 | $3,115.28 | $20,315.28 |
| 4 | $19,600.00 | $4,662.39 | $24,262.39 |
| 5 | $22,000.00 | $6,494.83 | $28,494.83 |
| 6 | $24,400.00 | $8,633.24 | $33,033.24 |
| 7 | $26,800.00 | $11,099.74 | $37,899.74 |
| 8 | $29,200.00 | $13,918.03 | $43,118.03 |
| 9 | $31,600.00 | $17,113.55 | $48,713.55 |
| 10 | $34,000.00 | $20,713.58 | $54,713.58 |
| 11 | $36,400.00 | $24,747.34 | $61,147.34 |
| 12 | $38,800.00 | $29,246.20 | $68,046.20 |
| 13 | $41,200.00 | $34,243.79 | $75,443.79 |
| 14 | $43,600.00 | $39,776.14 | $83,376.14 |
| 15 | $46,000.00 | $45,881.93 | $91,881.93 |
| 16 | $48,400.00 | $52,602.60 | $101,002.60 |
| 17 | $50,800.00 | $59,982.60 | $110,782.60 |
| 18 | $53,200.00 | $68,069.60 | $121,269.60 |
| 19 | $55,600.00 | $76,914.70 | $132,514.70 |
| 20 | $58,000.00 | $86,572.72 | $144,572.72 |