Precise calculations
Typed financial formulas run locally in your browser.
Compound Interest Calculator
Project investment growth with contributions and compound interest.
Your data stays in your browser and is never uploaded to a server.
Estimates only; actual returns may vary.
How to calculate compound interest
- 1
Enter principal, contributions and rate.
- 2
Choose contribution and compounding frequencies.
- 3
Calculate and review growth, table and CSV.
Key features
Currency formatting
Present results in USD, EUR or CRC without exchange rates.
Clear breakdown
Tables, summaries and CSV exports show every result.
Frequently asked questions
Are these results guaranteed?
No. They are estimates based on the values entered.
Are exchange rates applied?
No. Currency only controls symbols and formatting.
Is my financial data uploaded?
No. Every calculation runs in your browser.