A set of 25+ free money calculators that run entirely in your browser: 2027 budget, 50/30/20, debt payoff (snowball vs avalanche), emergency fund, sinking funds, side hustle tax set-aside, paycheck split, Christmas and Thanksgiving budgets, plus free printables. Numbers never leave your device. AI disclosure: built by LB3 Trackers with AI assistance; the math is checked by automated tests. Estimates only, not financial advice. Pages include referral links, which are labelled.