Finance Calculators

Free, fast, and private — all calculations run in your browser, and we never store your numbers. Built to answer the specific money questions a search box can't.

Investing

FIRE Calculator

Find out what age you could reach financial independence, based on your savings rate and returns.

Budgeting

True Cost of Car Ownership Calculator

See the real monthly cost of a car — loan, insurance, fuel, maintenance, and depreciation combined.

Budgeting

Car Lease Calculator

Break a lease into money factor, residual, and depreciation to see your true payment and effective APR.

Saving

CD & T-Bill Ladder Calculator

Build a laddered savings plan and see your blended yield and interest across rungs.

Taxes

RSU Tax & Take-Home Calculator

Estimate the taxes withheld when your RSUs vest and how many shares you actually keep.

Retirement

Solo 401(k) vs SEP IRA Calculator

Compare how much a self-employed earner can contribute to each plan for the year.

Retirement

How Much Do I Need to Retire?

Pick a target yearly income and see the nest egg you need under the 4% rule and safer withdrawal rates.

Salary

Salary to Hourly Converter

See what any yearly salary works out to per hour, month, week, and paycheck — before taxes.

Salary

Hourly to Salary Converter

Turn any hourly wage into a yearly, monthly, and weekly salary at full-time hours.

Home Buying

How Much House Can I Afford?

Estimate the home price you can afford at your salary using the 28/36 rule, adjustable for rate and down payment.