Return calculators

Run the numbers before you run the risk

Three calculators, one page: compound growth, CAGR, and dividend reinvestment. Adjust the assumptions and watch the outcomes move.

Rule of 72, illustrated

72

÷ rate of return ≈
years to double

Compound growth calculator

Project how a starting balance plus regular monthly contributions grows under monthly compounding.

Starting amount ($)

Monthly contribution ($)

Expected annual return (%)

Years invested

Future value

$0

Total contributed

$0

Growth earned

$0

Growth share of final balance

Find the compound annual growth rate implied by a starting value, an ending value, and a number of years.

Starting value ($)

Ending value ($)

Years held

CAGR

0%

Total growth

0%

CAGR smooths volatility into a single annual figure — it is not the return you experienced in any single year.

Estimate how automatically reinvested dividends compound your share count over time versus taking dividends as cash.

Starting shares

Share price ($)

Dividend yield (%)

Dividend growth (%/yr)

Years

Final shares

0

Final value

$0

DRIP advantage

$0

Illustrative model assuming steady price appreciation and yield; actual dividend payments and share prices vary and are not guaranteed.