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Sales Tax CalculatorAdd or remove sales tax from a purchase amount with local rate support.Score 14purchasePaint Coverage CalculatorEstimate paint gallons needed from wall area and coverage.Score 12purchaseUnit Price CalculatorCalculate price per unit for shopping comparisons.Score 12purchaseDown Payment CalculatorCalculate down payment amount, loan amount, and savings gap from property price and target percentage.Score 12purchaseClosing Cost CalculatorEstimate buyer closing costs from purchase price, lender fees, taxes, title fees, prepaid items, and down payment.Score 12purchaseStamp Duty CalculatorEstimate stamp duty or transfer tax from purchase price and local rate.Score 12purchaseCar Depreciation CalculatorEstimate car value after depreciation by age and annual rate.Score 12purchaseCustomer Lifetime Value CalculatorEstimate customer lifetime value from average order value, purchase frequency, gross margin, and churn.Score 4purchaseMortgage CalculatorEstimate monthly mortgage payments, total interest, principal, and payoff cost.Score 2BMI CalculatorCalculate body mass index using metric or imperial units and view the standard BMI category.Score 2Compound Interest CalculatorProject future investment value with compounding frequency and recurring contributions.Score 2Fuel Cost CalculatorEstimate advanced trip fuel cost with distance modes, efficiency units, fuel price units, emissions, commute projections, and vehicle comparisons.Score 2Scientific CalculatorUse a keyboard-friendly scientific calculator with trig, logs, powers, constants, and memory.Score 2Percentage CalculatorCalculate percentages, percent change, discounts, increases, and reverse percentages.Score 2Loan CalculatorEstimate loan payments, total interest, payoff totals, and amortized monthly costs.Score 2Force CalculatorCalculate force, mass, or acceleration using Newton's second law.Score 2Ohm's Law CalculatorCalculate voltage, current, resistance, and power from Ohm's law relationships.Score 2Age CalculatorCalculate exact age in years, months, days, total days, and next birthday countdown.Score 2Annual Salary to Hourly CalculatorConvert annual salary into hourly, weekly, biweekly, monthly, and daily pay estimates.Score 2Overtime Pay CalculatorCalculate regular pay, overtime pay, gross pay, and overtime share for a pay period.Score 2