Finance calculators that show their work

Work out how savings grow, what a goal will take, and how different risk levels have historically behaved.

Project retirement balances, capture your full employer match, and compare Roth against traditional.

Calculate payments, payoff dates, and the true interest cost of loans, cards, and student debt.

Work out car payments and what you can actually afford once insurance, fuel, and maintenance are counted.

Find your maximum home price, compare renting against buying, and check whether refinancing pays off.

Split your take-home pay across needs, wants, and savings with clear monthly targets.

Return on investment and break-even analysis for projects and small businesses.

Net worth, real hourly rate, inflation, and whether your raise actually kept pace with prices.