💰 Future Value Calculator
Enter a starting amount, monthly contribution, expected annual return, and time horizon to project the future value of your savings or investment.
What does this calculator do?
The future value calculator projects how much a savings or investment balance will grow to over time, combining an initial lump sum with regular monthly contributions and a compounding rate of return.
How the formula works
The lump sum grows using FV = PV × (1 + r)n, while regular contributions grow using the future value of an annuity formula: FV = PMT × [((1 + r)n – 1) ÷ r]. Here r is the monthly interest rate (annual rate ÷ 12) and n is the total number of months. The two results are added together for the total projected future value.
- Contributions are assumed to be made monthly, at the end of each month.
- Actual investment returns vary and are never guaranteed — this tool assumes a constant rate for simplicity.
This calculator is intended for general financial planning and educational purposes only, not as investment advice.