Retirement Calculator
See how long your savings will last based on your expenses, contributions, and Social Security.
Results update in real time as you type.
Projected savings at retirement
1.5M
$1,475,835
Monthly retirement budget
Living expenses
$4,000
+ taxes (25%)
$1,000
Gross monthly need
$5,000
Social Security offset
−$1,800
Monthly from savings
$3,200
The full planner runs Monte Carlo simulations with a success rate — this free tool is a single-path estimate.
$260,000
Total contributed
$1,215,835
Total growth
35
Years to retire
The math runs entirely in your browser — the numbers you enter are never sent to our servers. They’re saved only on this device so they’re still here when you come back.
This is just the starting point
PiggySize’s advanced retirement planner builds on your actual accounts — 401(k)s, IRAs, and more — with inflation, tax estimates, year-by-year income projections, and what-if scenarios, so you can plan with confidence.
Get Your Detailed PlanNo credit card required • Every account starts with 30 days of Pro free — after that, the Free plan is yours, no charge.
Disclaimer: This calculator is a simplified tool for educational and informational purposes only. It uses a single constant rate of return and does not account for inflation, taxes on withdrawals or benefit income, or changing expenses over time. Actual results will vary. Social Security and pension benefits shown are rough estimates — visit ssa.gov for a personalized Social Security estimate. Consult a qualified financial advisor before making retirement decisions.