Smart-Calcs

Finance & Business

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Mortgage Calculator

Estimate your monthly payment and total interest on a home loan.

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Compound Interest

Project your investment growth with initial deposit, monthly contributions, and compounding frequency.

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Salary & Paycheck Calculator

Estimate your net take-home pay from gross wages using US federal tax brackets, standard deductions, and FICA Social Security and Medicare withholdings.

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Freelance Rate Calculator

Calculate your minimum billable freelance hourly rate from target net income, business expenses, vacation, sick leave, and realistic billable hours per week.

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Car Loan Calculator

Estimate your monthly car payment, total interest, and total cost of ownership with trade-in, APR, and sales tax.

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Margin & Markup Calculator

Calculate profit margin and markup percentage from cost and selling price, or solve for any missing field with instant two-way recalculation.

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