Compare calculators

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

Roth IRA Calculator

Estimates how much your Roth IRA will be worth at retirement based on your current balance, monthly contributions, time horizon, and expected annual return. Use it when planning tax-free retirement income.

Monthly Contribution ($)

Current Balance ($)

Years to Grow (years)

Expected Annual Return (%)

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	Retirement	Investing
Inputs required	4	7
Result	Roth IRA Balance at Retirement ($)	401k Balance at Retirement ($)
What it does	Estimates how much your Roth IRA will be worth at retirement based on your current balance, monthly contributions, time horizon, and expected annual return. Use it when planning tax-free retirement income.	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.