See how your money can grow over time when you keep saving and give it time to compound.
Who this is for
People who want to see how money can grow over time if they leave it invested or keep adding to it.
What to type in
Your starting amount, monthly contribution, expected return, and time horizon.
Start with the assumptions, then use the interpretation below to compare tradeoffs without bouncing between sections.
Tell the calculator how much you have now, how much you will keep adding, and how long it can grow.
Use these inputs as a quick setup row. The answer and visual breakdown sit below so you do not lose context.
Nominal, before inflation.
Long-term growth
You personally put in $130,000.00, and compounding adds another $170,850.72 on top.
The gap between contributions and final balance is the compounding effect doing the work.
A monthly contribution of $500.00 matters just as much as the rate over long periods.
This is a projection, not a promise. Real returns will move around from year to year.
If the end number is lower than you need, the biggest levers are time, monthly contribution, and return assumptions.
Use the yearly breakdown to see when growth starts to matter more than your own deposits.
Results
Relative comparison of your main outputs
Future value
$300.9K
Total contributions
$130.0K
Growth earned
$170.9K
Future value
$300.9K
Total contributions
$130.0K
Growth earned
$170.9K
Last 10 years of projected balance
Use this if you want to understand how the calculator works, not just plug in numbers.
Step 1
Enter your starting principal and monthly contribution.
Step 2
Set annual return, horizon, and compounding frequency.
Step 3
Review future value plus contribution and growth decomposition.
These cover the assumptions, tradeoffs, and edge cases behind the calculator.
Use the calculator for the math, then use these guides to make the decision with more confidence.