Future Value Calculator
The Future Value Calculator helps you determine the value of an investment or savings at a future date, given a present value, interest rate, and time period. Future value is a core concept in finance that shows how money grows over time through compound interest. This calculator is useful for planning investments, comparing savings options, and understanding the time value of money. Whether you are saving for retirement, a home, or your children's education, knowing the future value of your investments helps you make informed financial decisions.
Formula
Future Value (Lump Sum) = PV × (1 + r)^n Future Value (Annuity) = PMT × [((1 + r)^n − 1) ÷ r] PV = present value r = interest rate per period n = number of periods PMT = periodic payment
Example
If you invest $10,000 today at 8% annual return for 20 years: Future Value = $10,000 × (1.08)^20 Future Value = $10,000 × 4.661 Future Value = $46,610 If you also add $200/month ($2,400/year): FV of annuity = $2,400 × [((1.08)^20 − 1) ÷ 0.08] = $2,400 × 45.76 = $109,824 Total = $46,610 + $109,824 = $156,434
How to Use
- Enter your initial investment amount (present value)
- Input the expected annual interest rate
- Enter the time period in years
- Optionally, add regular periodic contributions
- Review the projected future value of your investment
Frequently Asked Questions
What is the difference between future value and present value?
Future value calculates what an investment today will be worth in the future. Present value calculates what a future amount is worth today. They are inverse calculations connected by the interest rate and time period.
How does inflation affect future value?
Inflation erodes the purchasing power of money. To calculate real future value, subtract the inflation rate from your investment return. For example, 8% return minus 3% inflation = 5% real return.
What is the difference between simple and compound interest?
Simple interest is calculated only on the principal. Compound interest is calculated on the principal plus accumulated interest. Compound interest grows exponentially, while simple interest grows linearly. Always use compound interest for long-term calculations.
How often should interest be compounded?
More frequent compounding (daily, monthly) yields slightly higher returns than annual compounding. For example, $10,000 at 8% for 10 years: annually = $21,589, monthly = $22,196, daily = $22,236. The difference is small but grows over time.
Can I use this for retirement planning?
Yes. Enter your current savings as present value, expected annual return, and years to retirement. Add periodic contributions using the annuity formula. This gives you a projected retirement corpus.