Compound Interest Calculator

Calculate how your investment grows with compound interest and optional monthly contributions.

📋 Data Entry

Initial Amount ($)

Annual Interest Rate (%)

Compounding

Period (years)

Monthly Contribution ($)

📄 Result

Result

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⚠️ Results for informational purposes only. Consult a professional for financial decisions.

About this calculator

Compound interest is the interest calculated on both the initial principal and the accumulated interest from previous periods. Albert Einstein reportedly called it the 'eighth wonder of the world.' The longer your money compounds, the more powerful the effect — starting early is the single biggest advantage an investor can have.

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