Watch your money grow.
See what your savings could turn into with compound interest, whether you add money every week, every month or once a year.
How to use it
- Enter what you’re starting with.
- Pick how much you’ll add and how often: weekly, bi-weekly, monthly or yearly.
- Set your expected return and slide to how many years you’ll let it grow.
- Open More options to raise your deposits each year or see it in today’s dollars.
Your numbers
Sample numbers. Replace them with yours.
After 30 years you’d have
$159,972
Waiting just 1 year costs you $13,410.
How it grows
Milestones
Year-by-year breakdown
| Year | Put in | Interest | Balance |
|---|
I’m building something.
It’s launching soon and I’m so excited I can barely keep it to myself. I can’t tell you exactly what it is yet, but if you’ve ever wanted investing to finally click, you’re going to want in.
Want first dibs? Join the waitlist.
The fine print
Education, not financial advice. This is a simple model to help you see how compounding works. Returns are not guaranteed, and real markets go up and down instead of growing in a straight line.
How the math works: deposits are added at the end of each week, two weeks, month or year, and interest compounds just as often as you deposit (monthly deposits compound monthly, yearly deposits compound yearly), with interest rounded to the cent each time. If you raise deposits each year, the new amount starts in year two. “Today’s dollars” divides each year’s numbers by the inflation rate you set (0% unless you change it). “The cost of waiting” runs the same plan with the same end date but a 1, 5 or 10 year later start. It leaves out taxes and fees.

