Finance
Money decisions deserve real math: what a mortgage actually costs per month, what a car loan really is with interest, how compound growth builds over decades, how much to tip, and what that discount truly saves you. Each calculator comes with the formula and a worked example.
Mortgage Calculator
Monthly payment, total interest and payoff for a home loan
Finance
Auto Loan Calculator
Car payment, total interest and true cost of financing
Finance
Compound Interest Calculator
Year-by-year growth with optional yearly additions
Finance
Tip Calculator
Tip 15–25%, split the bill, round up per person
Finance
Sales Tax Calculator
Add or remove sales tax, before and after totals
Finance
Hourly to Salary Calculator
Annual, monthly, weekly and daily pay from an hourly wage
Finance
Discount Calculator
Sale price, savings, and stacked discount reality
Finance
Percentage Calculator
Percent of a number, ratios and percent change
Finance
8 free tools, no signup required — click any card to start.