Emergency Fund Calculator

An emergency fund is insurance you sell yourself: a few months of essential expenses in boring, instantly-available cash. Size it in months of runway, not dollars — the same $10,000 is a fortress for a lean budget and a fortnight for an expensive one. Play with the sizer to see how cutting essentials grows your runway from both ends.

Free and interactive — no sign-up, nothing to install. Read the full lesson for the plain-language explanation.