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Mortgage Calculator Use this before taking out a home loan to estimate the full monthly housing payment, including principal, interest, taxes, insurance, and mortgage-related fees. Stock Calculator Calculate profit or loss on a stock trade after accounting for purchase price, sale price, number of shares, dividends, and commissions. Salary Calculator Use this to convert gross pay between annual, monthly, weekly, daily, and hourly rates; choose a paycheck calculator when taxes and deductions matter. Sales Tax Calculator Add sales tax to a price or work backward from a tax-inclusive total to find the pre-tax cost and tax amount. VAT Calculator Add VAT to a net price, remove it from a gross price, or isolate the tax amount at the selected rate. Discount Calculator Use this for either a fixed-amount or percentage discount, including broader price adjustments; choose Percent Off for a straightforward percentage markdown. Take-Home-Paycheck Calculator Use this for a salaried paycheck when federal, state, payroll, benefit, and retirement deductions determine take-home pay. Percentage Calculator Percentage Calculator covers the formula, inputs, worked example, result interpretation, and common mistakes for the topic. Mileage Calculator Mileage Calculator covers the formula, inputs, worked example, result interpretation, and common mistakes for the topic.