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Utilities

Handy calculators, QR codes, dates, and everyday helpers.

Free to useNo signup requiredWorks in your browser
25 tools
QR Code GeneratorCreate customized QR codes for various data formats.SumCalculate sum of numbersGenerateGenerate random numbers in specified rangesArithmetic SequenceGenerate arithmetic sequencesRandom Port GeneratorGenerate random network portsRandom Number GeneratorGenerate random numbers in custom rangesByte ConverterQuickly convert values between byte unitsNumber to WordsConvert numbers to wordsOhm's LawCalculate voltage, current, or resistance in electrical circuits using Ohm's LawRound trip voltage drop in cableCalculate voltage drop and power loss in electrical cables based on length, material, and currentArea of a SphereCalculate the surface area of a sphere based on its radiusVolume of a SphereCalculate the volume of a sphere using radius or diameterSlackline TensionCalculate the approximate tension of a slackline or clothesline. Do not rely on this for safety.Convert Days to HoursConvert days to hoursConvert Hours to DaysConvert hours to daysConvert Seconds to TimeConvert seconds to time formatConvert Time to SecondsConvert time format to secondsTruncate Clock TimeTruncate clock time to specified precision
Useful tools. Thoughtful defaults.

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