Future Value Calculator
Grow one initial amount at a fixed effective annual rate.
Formula
- Use the units shown beside each field.
- Results update automatically whenever you change an input.
- Displayed values use up to four decimal places, or scientific notation for very small or large numbers. Calculations use standard floating-point arithmetic; exact integer and fraction tools identify their own precision rules.
Example Calculation
- Present value: 1000 $
- Annual effective rate: 10 %
- Years: 2
$1,000 growing by 10% each year becomes $1,210 in two years.
Frequently asked questions
How do I use this calculator?
Enter present value, annual effective rate, years. The result updates automatically. Use Reset to restore the example values.
What method does it use?
FV = PV × (1 + r)^t. Follow the units and definitions shown with the inputs to apply this relationship consistently.
Why might a rounded result differ?
The calculation keeps full numeric precision internally, then rounds the displayed result. Rounding intermediate steps by hand can produce a slightly different answer.
Are my inputs saved online?
No. This calculator processes your inputs in your browser. A recently used list stores only calculator names on this device, not your entered values.
Check the assumptions and units before using this result. Read about calculation methods.