Calculator
Compound interest
See how a lump sum grows when returns reinvest each period.
Inputs
Amounts in USD
ECB daily · 2026-08-07
$19,672
A $10,000 deposit at 7.0% for 10 years grows to $19,672.
- Principal
- $10,000
- Total interest
- $9,672
- Growth multiple
- 1.97×
Formula: FV = P × (1 + r)^t · ECB rates 2026-08-07
How this works
Compound interest reinvests each period's return, so growth accelerates over time. This calculator uses annual compounding: future value = principal × (1 + rate)^years.
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