Retirement Calculator
Use this free Retirement Calculator to calculate your Retirement savings plan instantly and accurately.
Your plan
At retirement
What is a Retirement Calculator?
A Retirement Calculator projects how much you will have saved by the time you retire. Enter your current age, target retirement age, current savings, monthly contributions, and expected annual return to estimate your nest egg.
How to calculate retirement savings manually (the formula)
The future value of retirement savings with monthly contributions is: FV = PV × (1 + r/m)mt + PMT × [ (1 + r/m)mt – 1 ] / (r/m) where PV is current savings, PMT is the monthly contribution, r is the annual return, m is 12 (months per year), and t is the number of years until retirement.
Example calculation
If you are 30 years old with $25,000 saved, contribute $500 per month, and earn 7% annually: at age 65 you would have approximately $1,127,000. Your total contributions would be $235,000, and the rest ($892,000) would be investment growth.
Common mistakes
- Starting too late — The most powerful factor in retirement savings is time. Starting at 25 vs 35 can mean hundreds of thousands of dollars difference.
- Being too conservative with investments — Young investors should take advantage of growth-focused investments. Being too conservative early on limits compound growth.
- Not accounting for inflation — A dollar today is worth more than a dollar in retirement. Use a realistic return rate (historically 7% before inflation, or 5% after inflation).
- Underestimating healthcare costs — Healthcare expenses in retirement can be substantial. Factor in Medicare premiums and potential long-term care costs.
- Forgetting to adjust contributions over time — As your income grows, increase your savings rate. Even 1% more per year can significantly boost your final balance.
Frequently asked questions
How does a retirement calculator work?
A retirement calculator estimates how much you will have saved by retirement based on your current age, retirement age, current savings, monthly contributions, and expected annual return. It projects the future value using compound growth.
How much do I need to save for retirement?
A common guideline is to save 10–15% of your income each year. Many aim to replace 70–80% of pre-retirement income. The exact amount depends on your lifestyle, retirement age, and life expectancy.
What is the 4% rule in retirement planning?
The 4% rule suggests you can withdraw 4% of your retirement savings in the first year of retirement, then adjust for inflation each year, with a high probability that your savings will last 30 years.
How does starting early affect retirement savings?
Starting early allows compound growth to work longer. Someone who saves $5,000 per year from age 25 may end up with more than someone who saves $10,000 per year starting at age 40 due to the extra compounding years.
Is this calculator free to use?
Yes, completely free with no sign-up or download required. You can use it as many times as you like.