Compare calculators

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

Rent Affordability Calculator

Find the maximum rent you can comfortably afford based on your gross income, existing debt payments, and utilities. Supports the standard 30% rule or a custom income-to-rent ratio.

Gross Monthly Income ($)

Other Monthly Debt Payments ($)

Rent-to-Income Ratio Rule

Estimated Monthly Utilities ($)

Fill in the required fields to see your result.

Budgeting

Retirement Savings Calculator

Calculate the monthly contribution you need to retire comfortably at your target age. Uses your current savings, expected investment return, and a 25× income target based on the 4% withdrawal rule.

Current Age (years)

Planned Retirement Age (years)

Current Retirement Savings ($)

Desired Annual Retirement Income ($)

Expected Annual Return

Fill in the required fields to see your result.

Key differences

	Rent Affordability Calculator	Retirement Savings Calculator
Category	Budgeting	Budgeting
Inputs required	4	5
Result	Maximum Affordable Rent ($)	Required Monthly Savings ($)
What it does	Find the maximum rent you can comfortably afford based on your gross income, existing debt payments, and utilities. Supports the standard 30% rule or a custom income-to-rent ratio.	Calculate the monthly contribution you need to retire comfortably at your target age. Uses your current savings, expected investment return, and a 25× income target based on the 4% withdrawal rule.