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Free compound interest calculator. See how your savings and investments grow over time with compound interest.
The compound interest calculator projects how money grows over time when interest is reinvested rather than withdrawn. It accepts a principal, rate, time period, and compounding frequency, and shows the resulting future balance.
Savers planning long-term goals, parents funding college accounts, and investors comparing the impact of different return rates. It is also a popular teaching tool in personal-finance and economics courses.
It makes the abstract idea of compounding concrete by showing exactly how a balance accelerates over decades. It also reveals how seemingly small differences in rate or compounding frequency translate into large differences in outcome.
It answers questions like "What will $5,000 grow into in 25 years at 7%?", "Does daily versus monthly compounding matter much?", and "How much faster does my money grow if I add monthly contributions?"