Interest Rate Calculator
Find the annual interest rate required for an investment to grow from a present value to a future value over a given time period.
Enter Values
Calculated Rate
Annual Interest Rate (CAGR)
8.45%
Monthly Rate
0.704%
Total Return
50.0%
How to Calculate Interest Rate
Our interest rate calculator uses the CAGR formula to determine what annual rate of return is needed to grow your investment from its starting value to its target value.
Common Use Cases
- Evaluate investments - Compare actual returns against benchmarks
- Goal planning - Find the rate needed to reach savings goals
- Compare accounts - Determine which account grew faster
Interest Rate FAQ
How do I find the interest rate of an investment?▼
Use the formula: Rate = (FV/PV)^(1/n) - 1, where FV is future value, PV is present value, and n is the number of years. This gives you the compound annual growth rate (CAGR).
What is CAGR?▼
CAGR (Compound Annual Growth Rate) is the rate of return that would be required for an investment to grow from its beginning value to its ending value, assuming profits were reinvested.
Is a higher interest rate always better?▼
For investments, higher rates mean better returns. For loans, lower rates mean less cost. Always consider risk - higher returns typically come with higher risk.