Compound Interest and Growth Calculators

Last Updated: July 30, 2026

Explore compound interest and growth calculators for projecting investment growth, comparing compounding frequencies, adding contributions, planning withdrawals, estimating future and present values, and calculating how long money may take to double.

Compound Interest & Compounding Frequency

Calculate compound interest over different time periods, compare compounding schedules, model variable rates, and measure the difference between simple and compound growth.

Contributions, Withdrawals & Account Growth

Project compound growth with recurring deposits, estimate sustainable withdrawals, and see how contributions and distributions affect an account over time.

Growth Rates & Return Projections

Estimate future value from annual or daily returns, calculate cumulative gains and CAGR-based growth, and explore the long-term effects of aggressive return assumptions.

Present Value, Maturity Value & Future Value

Work backward from a future financial goal or calculate the maturity value of an investment after applying growth and compounding assumptions.

Doubling Time & Compound Growth Rules

Estimate how long an investment may take to double or reach other growth milestones using exact calculations and common mental-math rules.