Retirement Savings Calculator

Estimate how much your savings could grow by the time you retire, with regular monthly contributions and compound growth.

yrs

yrs

%

Balance at retirement
915,443.94
Years to grow

35

Total contributions

235,000

Investment growth

680,443.94

Formula
Balance = current × (1+r)ⁿ + monthly × ((1+r)ⁿ − 1) ÷ r, where r = annual return ÷ 12 ÷ 100 and n = (retirement age − current age) × 12.
Examples
InputResult
Age 30 to 65, $25,000 saved, $500/mo at 6%Balance ≈ $902,000 at retirement

About this calculator

This calculator projects your retirement balance by compounding your existing savings and adding regular monthly contributions, all growing at an expected annual return. The first term grows your current lump sum, while the second term grows the stream of future contributions as a monthly annuity, with interest compounded monthly.

The results separate the money you contribute from the growth generated by compounding, showing the power of investing early and consistently. Because returns and inflation are uncertain, treat the figure as an estimate; use a conservative return assumption and revisit your plan regularly. The balance is a nominal pre-tax figure.

Frequently asked questions

A long-term diversified portfolio has historically returned roughly 5-8% before inflation, but past performance is no guarantee. Using a conservative rate gives a safer estimate.

No. The projected balance is in nominal terms. To gauge real purchasing power at retirement, compare it with an inflation calculator over the same period.

Compounding means your returns earn further returns. Over decades, growth can far exceed the total you contributed, which is why starting early matters so much.

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