Compare calculators
Both calculators run independently — change the inputs on either side to compare results.
Investing
Compound Interest Calculator
Project the future value of an investment given a lump-sum principal, recurring monthly contributions, an annual rate, and a compounding frequency. Use it for long-horizon planning — retirement, college funds, or any goal where reinvested earnings drive the bulk of growth.
Fill in the required fields to see your result.
Accounting
Return on Investment Calculator
Calculate return on investment (ROI) — the simple percentage gain or loss from an investment relative to its initial cost. Use it as the most universal profitability measure for marketing campaigns, real estate, stock trades, and business projects.
Fill in the required fields to see your result.
Key differences
| Compound Interest Calculator | Return on Investment Calculator | |
|---|---|---|
| Category | Investing | Accounting |
| Inputs required | 5 | 2 |
| Result | Future Value ($) | Return on Investment (%) |
| What it does | Project the future value of an investment given a lump-sum principal, recurring monthly contributions, an annual rate, and a compounding frequency. Use it for long-horizon planning — retirement, college funds, or any goal where reinvested earnings drive the bulk of growth. | Calculate return on investment (ROI) — the simple percentage gain or loss from an investment relative to its initial cost. Use it as the most universal profitability measure for marketing campaigns, real estate, stock trades, and business projects. |