Compound Interest Calculator

Compounding means gains roll back in and earn more gains. Enter your principal, monthly top-up and number of years, apply an assumed annual return, and see the end value plus how much of it is principal versus gains. It makes it easy to see why "start early, don't interrupt" beats chasing pumps and dumping on dips.

Estimated end value (at the assumed return)
38,000 USDT
Principal 1,000 + 200/month for 10 years · assumed return 8%
Above: the share of the end value that is total contributions (solid); the rest is the gain from compounding
Total contributed (principal + top-ups)25,000 USDT
Gain from compounding13,000 USDT

The annual return is an assumption you enter; in reality there's no fixed, unchanging rate of return. This tool is for feeling the "shape" of compounding, not for predicting how much crypto will rise. A year in crypto can be +100% or −70% — set the return to a negative number and you'll see compounding runs the other way fast too.

Risk warning: The assumed annual return is a demo parameter and represents no forecast or promise of returns. Crypto prices are highly volatile and you may lose your entire principal.