Coastfire-hub

Free open-source FIRE calculator suite showing your Coast FIRE number

Webfreeglobal

A free, open-source web-based toolkit that calculates how much needs to be invested today so compound growth carries a portfolio to full retirement without further contributions. It provides five calculator types — Coast FIRE, Barista FIRE, Fat FIRE, Lean FIRE, and an age-based grid — runs entirely in the browser with no account required, and is aimed at people planning financial independence or early retirement.

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