Tools/Everyday tools

CALMCALC CATALOG

Everyday tools calculators

Convert units and work with dates, time, engineering, construction, technology, and daily tasks.

Age CalculatorCalendar-year age→Date Difference CalculatorDifference between day indices→Time CalculatorHours converted to minutes plus minutes→Hours CalculatorEnd time minus start time→GPA CalculatorGrade points divided by credits→Grade CalculatorEarned divided by possible→Height CalculatorImperial height converted to centimeters→Concrete CalculatorVolume converted to cubic yards→IP Subnet CalculatorIPv4 address count from CIDR prefix→Bra Size CalculatorBust minus band circumference→Password GeneratorDeterministic seeded password; change the seed for a different reproducible password→Dice Roller CalculatorDeterministic seeded rolls; change the seed to reroll reproducibly→Conversion CalculatorKilometers converted to miles→Fuel Cost CalculatorFuel used multiplied by price→Voltage Drop CalculatorOhm's law voltage drop→BTU CalculatorArea multiplied by load factor→Square Footage CalculatorRectangle area→Time Card CalculatorShift duration less break→Time Zone CalculatorApplies UTC offset with 24-hour wrap→Compatibility CalculatorLighthearted shared-answer ratio→GDP CalculatorExpenditure approach→Gas Mileage CalculatorDistance divided by fuel→Horsepower CalculatorTorque-times-RPM relationship→Engine Horsepower CalculatorMechanical horsepower adjusted for efficiency→Stairs CalculatorTotal rise divided by target riser height→Series Resistance CalculatorSeries resistances add→Ohm's Law CalculatorCurrent equals voltage divided by resistance→Electricity Cost CalculatorEnergy multiplied by utility rate→Shoe Size CalculatorApproximate US men's to EU conversion→Tip CalculatorBill plus tip divided among people→Mileage Reimbursement CalculatorMiles multiplied by reimbursement rate→Density CalculatorMass divided by volume→Mass CalculatorDensity multiplied by volume→Weight CalculatorMass multiplied by gravitational acceleration→Speed CalculatorDistance divided by time→Molarity CalculatorMoles divided by solution volume→Molecular Weight CalculatorAtom count multiplied by atomic mass→Roman Numeral CalculatorValidates the decimal value representable in standard Roman numerals→Golf Handicap CalculatorUSGA-style score differential→Sleep CalculatorOvernight duration with day wrap→Tire Diameter CalculatorRim plus two sidewall heights→Roofing CalculatorArea with waste divided by 100 square feet→Tile CalculatorArea divided by tile coverage plus waste→Mulch CalculatorArea-times-depth converted to cubic yards→Gravel CalculatorArea-times-depth converted to cubic yards→Wind Chill CalculatorNWS wind-chill equation→Heat Index CalculatorNOAA heat-index regression→Dew Point CalculatorMagnus dew-point approximation→Transfer Time CalculatorMegabytes converted to megabits and divided by throughput→Base64 Encode CalculatorEncodes the displayed numeric text as UTF-8 Base64→URL Encode CalculatorPercent-encodes the character represented by the Unicode code point→Time Duration CalculatorEnd minute minus start minute→Day Counter CalculatorDifference between ordinal days→Day of Week CalculatorUTC Gregorian date; Sunday is 0→

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