Free online finance tool
Calculate compound wealth growth with initial principal investments, recurring monthly contributions, custom interest rates, and compounding schedules.
Enter your principal, interest rate, compounding frequency, and duration. Optionally add regular monthly contributions to see how they affect total growth. The calculator shows your final amount and total interest earned.
Total Invested Capital: $700,000
Calculate long-term compound growth with initial principal and monthly additions. Yuitility keeps the workflow fast and focused, so you can complete the job without creating an account.
Frequently asked questions about calculation formulas, privacy, and usage.
More frequent compounding (daily/monthly vs annual) results in slightly higher effective returns at the same nominal rate, since interest itself starts earning interest sooner.
Simple interest is calculated only on the original principal throughout the term. Compound interest is calculated on the principal plus previously accumulated interest, causing growth to accelerate over time.
Adding regular contributions on top of a lump sum can significantly increase the final corpus compared to a one-time deposit alone, especially over long durations, since each contribution has its own compounding runway.
No. Compound interest calculations run 100% in your browser memory.
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