↗
Saving & investing

Compound interest calculator

Project growth with regular contributions.

Preparing calculator…
TRANSPARENT CALCULATION

Formula & method

FV = P(1+r/n)ⁿᵗ + PMT × ((1+r/n)ⁿᵗ−1)/(r/n)

Compounding earns returns on prior returns. Contribution timing affects the final balance.

Assumptions

  • Inputs remain in your browser and are not saved.
  • Rates are converted to the payment frequency shown.
  • Results are rounded for display; internal calculations retain precision.
WORKED EXAMPLE

Example calculation

Example

$10,000 growing at 7% for 10 years with monthly compounding becomes about $20,096 without contributions.

Important

Educational estimates only — not financial, tax or legal advice.