Compound Interest Calculator

Project how savings grow with compounding and regular contributions.

Quick answer: Calculate compound interest growth online. Free investment calculator showing how your savings multiply via regular contributions and compounding returns.

$
%
yrs
$
Future value$144,572.72
Total contributed$58,000
Interest earned$86,572.72

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See the future value of a starting amount plus regular contributions, with interest compounding yearly, quarterly, monthly, or daily.

How it works

  1. Enter your starting principal amount.
  2. Set your recurring contribution and select a compounding frequency.
  3. The engine applies exponential growth formulas to project your future value.

Frequently asked questions

What makes compounding powerful?

Interest earns interest. The growth curve is exponential, which is why starting early beats contributing more later.

Monthly vs yearly compounding — big difference?

Moderate at typical rates, but it grows with time and rate. Daily vs monthly matters less than people expect.

Is the rate guaranteed?

No — this is a projection. Market returns vary year to year; long-run averages are assumptions, not promises.

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