Compound Interest Calculator

Calculate investment growth from principal, interest rate, compounding frequency, time and monthly contributions.

What the compound interest calculator shows

• Future value
• Interest earned
• Year-by-year growth table

Formula and assumptions

Results are estimates based on the values you enter. Where useful, Calc Studio shows formulas, steps, tables or breakdowns so you can understand the answer.

Feedback helps improve accuracy and usability. Send suggestions, incorrect-result examples or missing-calculator requests to feedback@calcstudioapp.com.