Finance Calculators

Tools for planning financial independence, paying off debt, and sizing up investments — no sign-up, no spreadsheet required.

Coast FIRE Calculator

Find out if your current savings alone could grow into full financial independence by retirement age.

Barista FIRE Calculator

See how much less you need invested when part-time income covers part of your expenses — and how long it'll take to get there.

Chubby FIRE Calculator

Find your Chubby FIRE number and see how long it'll take to get there at your current savings rate.

Die With Zero Calculator

See how much you could spend each year to bring your savings to exactly zero by a target age.

Debt Snowball Calculator

Enter each debt and see exactly how many months to debt-free, and how much interest you'll pay, with the debt snowball method.

Dividend Reinvestment Calculator

Compare reinvesting your dividends (DRIP) against taking them as cash, over any time horizon.

Dollar Cost Averaging Calculator

Compare investing a fixed amount every month (DCA) against investing the same total all at once (lump sum).

Portfolio Rebalancing Calculator

Enter your current holdings and target allocation to see exactly how much to buy or sell of each asset.

ETF Overlap Calculator

Enter the weight of each shared holding in both funds to calculate the true overlap between two ETFs.

Rental Yield Calculator

Get your gross and net rental yield from a property's value, rent, and running costs.

Customer Lifetime Value Calculator

Estimate how much revenue and profit an average customer is worth over their entire relationship with your business.

Junk Silver Face Value Calculator

Enter the face value of your pre-1965 90% silver coins and the current spot price to get silver content and melt value.