Free online retirement savings calculator. Enter your current age, expected retirement age, current savings, monthly contribution, and expected annual return to calculate your total retirement savings. Uses compound interest to help you plan your retirement scientifically. | No registration · Data never leaves your device
Zero dependencies · Works offlineFill in the details below to estimate your retirement savings
1. Enter your current age and expected retirement age — the tool auto-calculates your remaining working years.
2. Enter your current savings (if any) — this is the starting point for compound growth.
3. Enter your monthly contribution — the amount you plan to save each month.
4. Set your expected annual return (historical average: S&P 500 ~7-10%, bonds ~3-5%).
5. Optional: enter annual inflation rate to see purchasing power after inflation.
6. Click "Calculate" to see your projected retirement savings.
We use the monthly compound model: FV = P × (1+r)^n + M × [(1+r)^n - 1] / r. Where P = current principal, M = monthly deposit, r = monthly rate (annual rate ÷ 12), n = total months. This assumes end-of-month deposits — the standard financial formula.
Retirement savings benefit from long-term compound growth. At 7% annual return, starting at age 25 with $500/month yields about $920,000 by age 65. Starting at 40 yields only $285,000. Start early!
Strategy varies by age: 20s-30s — stock-heavy (7-10% expected return); 40s-50s — balanced (5-7%); 55+ — conservative (3-5%). This tool is for estimation only; consult a financial advisor.
Inflation erodes purchasing power. $1 million in 30 years at 2.5% inflation is worth about $470,000 in today's dollars. We recommend entering 2-3% inflation to see real purchasing power.
The FIRE movement follows the 4% rule: retirement savings should be ≥ 25× annual expenses. If you spend $40,000/year, you need $1,000,000 saved. Use this calculator to see if your savings plan gets you there.