Compound Interest
Watch your money snowball — interest earning interest over time.
A = P × (1 + r/n)nt — interest is calculated on your growing balance each period, not just the original amount. The more frequent the compounding, the higher the effective return.The Power of Compounding — Einstein's 8th Wonder
Compound interest is the process where the interest you earn on your investment is added back to the principal, and then you earn interest on that combined amount. Over long periods, this creates a snowball effect known as exponential growth. As Albert Einstein famously said, understanding this concept is the key to building significant wealth.
Monthly vs Yearly Compounding Calculator
The frequency of compounding matters. Savings products, bonds, and investment accounts can all compound on different schedules such as yearly, quarterly, monthly, or even daily. This calculator lets you compare those frequencies so you can see how much extra growth comes from earning returns on prior returns more often.
Compound Interest Formula Explained
The math behind our tool follows the standard universal formula: A = P × (1 + r/n)nt.
- P: Your initial principal (seed money).
- r: Annual interest rate (in decimal).
- n: Number of times interest compounds per year.
- t: Total time in years.
Impact of Inflation on Compounding
While compounding grows your money, inflation reduces its future purchasing power. If your money compounds at 8% but inflation is at 6%, your 'Real' rate of return is only ~2%. Use our integrated inflation toggle to see the real-world value of your future wealth in today's terms.