COMPOUND INTEREST CALCULATOR

Initial Investment ($) Monthly Contribution ($) Annual Interest Rate (%) Compounding Frequency Annually Semi-Annually Quarterly Monthly Daily Investment Period (Years) Show inflation-adjusted (real) values Currency US Dollar ($) Euro British Pound Japanese Yen Australian Dollar Canadian Dollar Chart Type Stacked Bar Area

Start Early

Time is your greatest asset when it comes to compound interest.

Be Consistent

Regular contributions significantly boost returns through dollar-cost averaging.

Consider Geo-Arbitrage

Leverage living in lower-cost locations while earning in stronger currencies.

Reinvest Dividends

Automatically reinvesting dividends accelerates compound growth.

How Compound Interest Works

Compound interest allows your money to grow exponentially over time by earning interest on both your principal and accumulated interest.

The Formula

A = P(1 + r/n)^nt

A = P(1 + r/n)^nt + PMT x ((1 + r/n)^nt - 1) / (r/n)

Where: A = Final amount, P = Principal, r = Annual interest rate, n = Compounding frequency, t = Time in years, PMT = Regular payment

Historical Market Returns

Asset Class	Avg. Annual Return	Time Period
S&P 500 (US)	~10.5%	1957-2023
MSCI World Index	~8.5%	1970-2023
US 10-Year Treasury Bonds	~4.5%	1970-2023
Gold	~7.2%	1971-2023
Real Estate (US)	~8.6%	1970-2023

Important: Past performance is not indicative of future results. Consider inflation (historically ~2-3% annually) when planning long-term investments.