Finance Calculators
Mortgages, loans, tax, investments and more — all with step-by-step workings.
22 calculatorsA Map of the Finance Calculators
Almost every money question reduces to one of four shapes, and each shape has its tools here. Borrowing: the mortgage, loan and auto loan calculators price a debt, the amortization schedule shows where each payment really goes, and the payment solver works the equation from whichever side you know. Escaping debt: the credit card and debt payoff tools quantify the minimum-payment trap and compare snowball against avalanche, while the credit score estimator covers the number lenders judge you by.
Growing money: compound interest is the engine, the investment and retirement calculators project it honestly (fees and inflation included), and the savings and budget tools handle the discipline side. Everyday arithmetic: income tax with verified 2026 rates for four countries, VAT, salary conversions, tips, discounts, inflation and ROI.
Every tool shows its working, every guide uses verified numbers, and the deeper concepts live in the blog — start with how compound interest works if you read only one. Definitions of any unfamiliar term are in the glossary.