About Compound Snowball

Compound Snowball started from a simple frustration: most compound interest calculators give you a single number and nothing else. No sense of how much of that number is your own money versus interest, no easy way to see what happens if you contribute a bit more each month, and no way to compare a couple of "what if" scenarios side by side.

This tool tries to fix that with an animated growth chart that breaks your balance into contributions and interest earned, an inflation-adjustment option so you can see purchasing power alongside the raw number, and a scenario comparison chart for testing different rates and contribution amounts against each other.

Everything runs directly in your browser — there's no account, no data sent to a server, and no financial advice being given. The numbers are estimates based on the assumptions you enter; actual investment and savings returns vary and are never guaranteed.