Compare calculators

Both calculators run independently — change the inputs on either side to compare results.

Roth IRA Calculator

Project your Roth IRA's tax-free balance at retirement by combining your existing savings with years of annual contributions compounding at your expected return. Use it to see how much tax-free income you can generate after age 59½.

Current Age (years)

Retirement Age (years)

Current Roth IRA Balance ($)

Annual Contribution ($)

Expected Annual Return (%)

Income Level

Fill in the required fields to see your result.

Investing

401k Calculator

Projects your 401(k) balance at retirement by combining your current savings, ongoing contributions, employer match, and expected investment growth. Use it to see whether you are on track and how much employer matching adds to your nest egg.

Current 401k Balance ($)

Annual Salary ($)

Employee Contribution (%)

Employer Match (% of contribution)

Employer Match Limit (% of salary)

Annual Return Rate (%)

Years Until Retirement (years)

Fill in the required fields to see your result.

Key differences

	Roth IRA Calculator	401k Calculator
Category	Investing	Investing
Inputs required	6	7
Result	Tax-Free Retirement Balance ($)	401k Balance at Retirement ($)
What it does	Project your Roth IRA's tax-free balance at retirement by combining your existing savings with years of annual contributions compounding at your expected return. Use it to see how much tax-free income you can generate after age 59½.	Projects your 401(k) balance at retirement by combining your current savings, ongoing contributions, employer match, and expected investment growth. Use it to see whether you are on track and how much employer matching adds to your nest egg.