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Percentage Increase CalculatorMeasure the absolute and percentage change from an original value to a…Paint Coverage CalculatorEstimate paint gallons from surface area, number of coats, product coverage, and…Loan Payment CalculatorEstimate the fixed monthly payment, total repayment, and interest for an amortizing…Ideal Gas Law CalculatorSolve for gas volume from pressure, amount of substance, and absolute temperature…Feet to Meters CalculatorConvert a length in feet to meters using the exact international conversion…Date Difference CalculatorFind the signed number of days and calendar interval between two dates.Concrete Volume CalculatorEstimate cubic feet and cubic yards of concrete for a rectangular slab,…Compound Interest CalculatorEstimate how an initial principal grows when interest is added to the…Celsius to Fahrenheit CalculatorConvert temperatures from degrees Celsius to degrees Fahrenheit with an affine temperature…BMR CalculatorEstimate resting daily energy expenditure with the Mifflin–St Jeor equation.BMI CalculatorEstimate adult body mass index from weight and height, with metric and…Age CalculatorCalculate completed calendar years, months, days, and total days from a birth…