Retirement Savings Calculator
Project your nest egg at retirement from your current savings and monthly contributions — then see what it could pay you each month.
Your details
≈ / month at the 4% rule
In today's dollars
Years to grow
Where the balance comes from
How to Use
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1
Enter your age. Add your current age and the age you plan to retire.
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2
Add your savings. Enter your current retirement balance and how much you contribute each month.
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3
Set assumptions. Adjust the expected annual return and inflation rate (defaults shown).
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4
Review your result. See your projected balance, inflation-adjusted value, and estimated monthly income.
Calculation Method
This calculator projects your balance using the future-value formula for a lump sum plus a series of regular contributions:
FV = P(1 + r)n + C × [((1 + r)n − 1) / r]
- P = current savings
- C = annual contribution (monthly × 12)
- r = expected annual return
- n = years until retirement
The today's-dollars figure discounts the result by your inflation rate: FV ÷ (1 + i)n. Estimated monthly income applies the 4% safe-withdrawal rule (4% of the balance, divided by 12).
Examples
Example. A 35-year-old with $50,000 saved, contributing $600/month, retiring at 65, assuming a 7% return: the projected balance is roughly $1.34M (about $4,470/month under the 4% rule), or roughly $550,000 in today's dollars at 3% inflation.
Frequently Asked Questions
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Disclaimer: Calculations are projections based on the assumptions you provide and are for informational purposes only. They are not financial, tax, or investment advice. Investment returns are not guaranteed. Consult a Certified Financial Planner (CFP) before making retirement decisions.
Data source: Historical market averages (illustrative). 4% safe-withdrawal rule (Bengen / Trinity study).