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Retirement Calculator

Free retirement calculator: project your nest egg from current savings, monthly contributions, and expected returns. See what compounding can do.

About this tool

Retirement feels far away until you run the numbers - then it becomes the most motivating math you will ever do. Thanks to compound growth, money saved in your 20s and 30s does far more work than money saved later.

Enter your age, savings, monthly contributions, and expected return, and this retirement calculator projects what you will have when you stop working.

How to use

Type your current age and the age you plan to retire, your current retirement savings, how much you can contribute each month, and a realistic annual return percentage.

Press Calculate Retirement. You will see your projected nest egg, your total contributions, and how much came from investment growth - the last number is usually the eye-opener.

The math behind it

Future value combines two parts: your current savings growing untouched, plus your monthly contributions compounding. FV = PV(1+r)^n + PMT x (((1+r)^n - 1) / r), with r the monthly return and n the months until retirement.

For example, $10,000 saved plus $500/month at 7% for 30 years grows to roughly $691,000 - with only $190,000 of that being your own contributions.

Frequently asked questions

What return should I assume?
Long-term stock market returns average 7-10% per year before inflation. For planning, 6-7% is a sensible conservative assumption for a stock-heavy portfolio; use 4-5% if you invest conservatively. Always think in after-inflation terms too - 7% nominal is roughly 4-5% real.
How much do I need to retire?
A common rule of thumb is 25 times your annual spending (the 4% rule). If you spend $40,000 a year, aim for about $1,000,000 invested. Your exact number depends on lifestyle, location, and other income like pensions.
Is it too late to start saving?
No - the best time was years ago, but the second-best time is today. Even starting at 40 or 50, consistent contributions plus compound growth build meaningful savings. This calculator shows exactly what catching up looks like for your situation.

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