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Air Changes per Hour
Calculate an ideal air-change rate from volume flow and room volume.
Calculate002Everyday & specialist / scienceAcceleration
Find average acceleration from a velocity change and elapsed time.
Calculate003Everyday & specialist / mathematicsAnnulus Area
Find the area between two concentric circles.
Calculate004Everyday & specialist / financeAnnual Percentage Yield
Convert a nominal annual rate to an effective annual yield with regular compounding.
Calculate005Everyday & specialist / mathematicsArc Length
Calculate a circular arc’s length from its radius and central angle.
Calculate006Everyday & specialist / mathematicsArea
Calculate the area of a rectangle from its length and width.
Calculate007Everyday & specialist / mathematicsArithmetic Mean
Calculate the arithmetic mean of three numeric values.
Calculate008Everyday & specialist / mathematicsArithmetic Sequence
Find an indexed term in an arithmetic sequence.
Calculate009Everyday & specialist / technologyAspect Ratio
Express an image or display’s width-to-height ratio as a decimal.
Calculate010Everyday & specialist / mathematicsBinomial Probability
Find the probability of exactly k successes in independent equal-probability trials.
Calculate011Everyday & specialist / engineeringBattery Energy
Estimate nominal battery energy from volts and ampere-hours.
Calculate012Everyday & specialist / fitnessBMI
Calculate adult body mass index from weight and height.
Calculate013Everyday & specialist / engineeringBattery Runtime
Estimate operating time using usable watt-hours and a constant load.
Calculate014Everyday & specialist / businessBreak-Even
Find the whole-unit sales volume needed to cover fixed and variable costs.
Calculate015Everyday & specialist / scienceBuoyant Force
Calculate the upward force associated with displaced fluid.
Calculate016Everyday & specialist / engineeringCapacitor Energy
Calculate energy stored in an ideal capacitor.
Calculate017Everyday & specialist / mathematicsCircle
Calculate circle area and circumference from its radius.
Calculate018Everyday & specialist / mathematicsCombinations
Count unordered selections without replacement from distinct items.
Calculate019Everyday & specialist / homeConcrete
Estimate slab volume with an adjustable waste allowance.
Calculate020Everyday & specialist / homeConcrete Bag Quantity
Estimate bagged concrete quantities using the manufacturer’s mixed yield.
Calculate021Everyday & specialist / financeCompound Interest
Estimate future value under a constant interest rate and regular compounding.
Calculate022Everyday & specialist / mathematicsCone Surface Area
Calculate the base and curved surface area of a right circular cone.
Calculate023Everyday & specialist / mathematicsCone Volume
Calculate the volume of a right circular cone.
Calculate024Everyday & specialist / mathematicsConical Frustum Volume
Calculate volume of a right circular cone with its tip removed.
Calculate025Everyday & specialist / mathematicsCoordinate Distance
Find Euclidean distance between two points in a plane.
Calculate026Everyday & specialist / mathematicsCylinder Surface Area
Calculate total surface area of a closed right circular cylinder.
Calculate027Everyday & specialist / financeDebt-to-Income Ratio
Calculate the ratio of entered monthly debt payments to gross monthly income.
Calculate028Everyday & specialist / mathematicsCylinder Volume
Calculate the volume of a right circular cylinder.
Calculate029Everyday & specialist / scienceDensity
Calculate average density from mass and volume.
Calculate030Everyday & specialist / scienceDilution
Calculate stock volume needed for a dilution using C₁V₁ = C₂V₂.
Calculate031Everyday & specialist / mathematicsDiscount
Work out the sale price and savings from a percentage discount.
Calculate032Everyday & specialist / scienceDistance
Estimate distance from average speed and travel time.
Calculate033Everyday & specialist / technologyDownload Time
Estimate file download time from decimal megabytes and megabits per second.
Calculate034Everyday & specialist / mathematicsEllipse Area
Calculate ellipse area from its two semi-axis lengths.
Calculate035Everyday & specialist / scienceEnergy
Estimate electrical energy in kilowatt-hours from watts and hours.
Calculate036Everyday & specialist / mathematicsFactorial
Calculate a factorial for a nonnegative integer up to 170.
Calculate037Everyday & specialist / mathematicsExponent
Raise a nonnegative base to a real exponent.
Calculate038Everyday & specialist / homeFlooring
Estimate flooring area with an allowance for cutting waste.
Calculate039Everyday & specialist / scienceForce
Apply Newton’s second law for constant mass in classical mechanics.
Calculate040Everyday & specialist / mathematicsFraction Addition
Add two fractions and view a decimal result and unsimplified fraction.
Calculate041Everyday & specialist / mathematicsFraction Multiplication
Multiply two fractions and see their decimal product.
Calculate042Everyday & specialist / scienceFree-Fall Time
Estimate time to fall from rest through a specified distance.
Calculate043Everyday & specialist / automotiveFuel Consumption
Calculate fuel consumption in liters per 100 kilometers.
Calculate044Everyday & specialist / scienceFrequency from Period
Find frequency from the duration of one complete cycle.
Calculate045Everyday & specialist / automotiveTrip Fuel Cost
Estimate a trip’s fuel cost using an entered fuel price.
Calculate046Everyday & specialist / mathematicsGeometric Sequence
Find an indexed term in a geometric sequence.
Calculate047Everyday & specialist / homeGravel
Estimate gravel mass from area, depth, and an entered bulk density.
Calculate048Everyday & specialist / mathematicsGreatest Common Divisor
Find the largest positive integer dividing two nonnegative integers.
Calculate049Everyday & specialist / mathematicsHeron’s Formula
Find triangle area from three side lengths without measuring the height.
Calculate050Everyday & specialist / scienceHooke’s Law
Calculate the restoring-force magnitude of an ideal linear spring.
Calculate051Everyday & specialist / businessHourly to Annual Salary
Estimate annual gross earnings from hourly pay and paid hours.
Calculate052Everyday & specialist / scienceIdeal Gas Pressure
Estimate pressure using the ideal gas law and absolute temperature.
Calculate053Everyday & specialist / scienceHydrostatic Pressure
Calculate pressure increase below the surface of a static fluid.
Calculate054Everyday & specialist / technologyUncompressed Image Size
Estimate uncompressed pixel data size from dimensions and color depth.
Calculate055Everyday & specialist / financeInflation Adjustment
Estimate the future amount needed under a constant assumed inflation rate.
Calculate056Everyday & specialist / scienceKinetic Energy
Calculate classical translational kinetic energy from mass and speed.
Calculate057Everyday & specialist / mathematicsLaw of Cosines
Find a triangle’s third side from two sides and their included angle.
Calculate058Everyday & specialist / mathematicsLeast Common Multiple
Find the smallest nonnegative common multiple of two integers.
Calculate059Everyday & specialist / financeRemaining Loan Balance
Estimate remaining principal after a number of equal payments on a fixed-rate loan.
Calculate060Everyday & specialist / financeLoan Payment
Estimate equal monthly payments for a fixed-rate amortizing loan.
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