Money
Work out the money decision before it gets stressful
Quick calculators for the money questions people actually lose sleep over. Your numbers stay in your browser — nothing is uploaded or saved.
What are you deciding?
How long will my money last?
See the month your cash runs out at your current pace — and how the picture changes if income stops.
Runway calculator
Could I handle a big surprise bill?
Test whether your savings survive a car repair, medical bill, or losing a month of income.
Shock test
Should I rent or buy?
Estimate the year buying a home becomes cheaper than renting, after interest, maintenance, and selling costs.
Rent vs buy calculator
Subscription, or buy it once?
Find the month a monthly subscription overtakes the one-time price — including what your money could earn instead.
Crossover calculator
Deciding about a home?
The money side of buying, selling, and repairs lives in our home section — seller proceeds, closing costs, and repair-or-credit math.