MoneyCrunchLab is a collection of free financial calculators built and maintained by an independent software engineer. Each tool is built from the standard amortization and time-value-of-money formulas used by lenders, checked against real-world examples, and explained in plain English on the page — every calculator shows its assumptions.
The calculators are estimates for educational purposes. They are not financial advice, and they can’t know your full situation — for decisions involving significant amounts, talk to a qualified professional.
Spotted an error, or want a calculator that doesn’t exist yet? Email hello@moneycrunchlab.com.