💰 Compound Interest Calculator
See how your savings and investments grow over time
Core inputs
Initial investment
$10,000
Annual interest rate
7.0%
Time period (years)
20 yrs
Additional months
0 mo
Compound frequency
Daily (365/yr)
Weekly (52/yr)
Bi-weekly (26/yr)
Semi-monthly (24/yr)
Monthly (12/yr)
Bi-monthly (6/yr)
Quarterly (4/yr)
Half-yearly (2/yr)
Yearly (1/yr)
Regular contributions (optional)
Deposit amount
$200
Annual deposit increase
0.0%
Deposit frequency
Weekly
Bi-weekly
Monthly
Quarterly
Half-yearly
Yearly
Deposit timing
End of period
Beginning of period
Reverse calculator — solve for rate, principal, or time
Target total value ($)
Target interest earned ($)
Solve for
Required rate
Required principal
Required years
Result
—
Calculate ↗
Principal / Deposits
Interest earned
Yearly
Monthly