Compound Interest Calculator
A compound interest calculator shows how money grows over time with compound interest. Year-by-year projection demonstrates the power of compounding. See your balance, interest earned, and total contributions for each year. Financial planning tool helps visualize long-term savings growth. Understanding compound interest is essential for retirement planning and investment strategy. The calculator applies the compound interest formula A = P(1 + r/n)^(nt) where P is principal, r is annual rate, n is compounding frequency, and t is time. It generates a year-by-year table showing starting balance, interest earned, and ending balance. Additional monthly contributions are added to each period and also earn compound interest. Different compounding frequencies show how daily vs monthly vs annual compounding affects returns. Planning retirement savings projections. Comparing investment account options. Understanding the impact of starting to save early. Evaluating different contribution strategies. Visualizing the difference compounding frequency makes. Teaching financial literacy concepts. Setting long-term savings goals with realistic timelines. Starting early is more important than the amount saved. A 20-year-old saving $200 monthly grows to more than a 30-year-old saving $400 monthly. Higher compounding frequency yields slightly better returns. Inflation reduces purchasing power, so consider real vs nominal returns. Reinvest dividends and interest for maximum compounding benefit. Related tools: BMI Calculator, Age Calculator, Tip Calculator, Percentage Calculator, Discount / Sale Calculator. Browse all 123 free tools on the KitCraft home page.