Calculators
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Zeitstempel-Tools 7
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Current Unix ZeitLive clock showing Unix time in seconds and milliseconds.Zeitstempel to DatumsumrechnerTurn a timestamp (s/ms/µs) into a formatted date instantly.Datums to ZeitstempelumrechnerConvert a calendar date & time into Unix epoch seconds.MillisecondsumrechnerConvert milliseconds to seconds, minutes, hours and days.Zeit DifferencerechnerDistance between two timestamps or dates in every unit.From UNIX ZeitstempelConverts a UNIX timestamp to a datetime string. e.g. 978346800 becomes Mon 1 January 2001 11:00:00 UTC A UNIX timestamp is a 32-bit value representing the number of seconds since January 1, 1970 UTC (the UNIX epoch).
Datum-und-Zeit-Tools 9
Datums FormatumrechnerRender any date in ISO, RFC, locale and custom formats.Days Between DatumsCount days (and weeks/months) between two calendar dates.Datums Add SubtractrechnerAdd or subtract days, weeks, months from a date.ZeitzonenumrechnerCompare times across world timezones instantly.Schaltjahr YearprüfungCheck whether a year is a leap year and why.AltersrechnerExact age in years, months, days, hours and total days.
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ISO Wochen ZahlenrechnerFind the ISO-8601 week and weekday of any date.Get ZeitGenerates a timestamp showing the amount of time since the UNIX epoch (1970-01-01 00:00:00 UTC). Uses the W3C High Resolution Time API.Parse DateTimeParses a DateTime string in your specified format and displays it in whichever timezone you choose with the following information: Date Time Period (AM/PM) Timezone UTC offset Daylight Saving Time Leap year Days in this month Day of year We
Zahlen-Tools 13
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Hex Dezimal Binär LiveumrechnerEdit hex, dec, oct and bin simultaneously — all stay in sync.Roman NumeralumrechnerConvert between Roman numerals and Arabic numbers.Zahlen to WordsumrechnerSpell out numbers in English words (cheques, captions).ProzentrechnerPercent of, increase/decrease and ratio problems.Zufalls ZahlengeneratorCryptographically random integers in any range.ZahlenformatiererThousands separators and fixed decimals for any locale.FakultätsrechnerExact big-integer factorials.GCD & LCM-RechnerGreatest common divisor and least common multiple of a list.Primzahl ZahlenprüfungTest primality and show the smallest factor.Convert data unitsConverts a unit of data to another format.Convert distanceConverts a unit of distance to another format.Unicode Text FormatAdds Unicode combining characters to change formatting of plaintext.
UUID-Tools 7
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UUID v7-GeneratorTime-ordered sortable UUIDs for databases.ULID-Generator26-character lexicographically sortable unique IDs.GUID-GeneratorMicrosoft-style bracketed GUIDs.UUID-ValidatorValidate a UUID/GUID and detect its version & variant.Generate all checksumsGenerates all available checksums for the input.Generate UUIDGenerates an RFC 9562 (formerly RFC 4122) compliant Universally Unique Identifier (UUID),
Einheitenumrechner 25
LängenumrechnerConvert metres, kilometres, centimetres, inches, feet, yards, miles and nautical miles.GewichtsumrechnerConvert kilograms, grams, tonnes, pounds, ounces, stones and carats.TemperaturumrechnerConvert Celsius, Fahrenheit, Kelvin and Rankine with the formulas shown.VolumenumrechnerConvert litres, millilitres, US and imperial gallons, cups, pints, quarts and fluid ounces.GeschwindigkeitsumrechnerConvert km/h, mph, metres per second, knots, feet per second and Mach number.FlächenumrechnerConvert square metres, hectares, acres, square feet, square inches and square miles.
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DruckumrechnerConvert pascbar, psi, atm, torr, mmHg, kgf/cm² and inches of mercury.EnergieumrechnerConvert joules, kilowatt-hours, calories, kilocalories, BTU, electronvolts and tonnes of oil equivalent.LeistungsumrechnerConvert watts, kilowatts, mechanical and metric horsepower, BTU/h and kcal/h.WinkelumrechnerConvert degrees, radians, gradians, arcminutes, arcseconds and turns.Zeit DauerumrechnerConvert nanoseconds to centuries: seconds, minutes, hours, days, weeks, months and years.Daten SpeicherumrechnerConvert bits, bytes and SI versus IEC multiples — kB, MB, GB, KiB, MiB, GiB, TiB.Typography UnitumrechnerConvert CSS px, pt, pc, mm, cm, in, Q and didot/cicero at the standard 96 dpi reference.HäufigkeitsumrechnerConvert hertz, kilohertz, megahertz, gigahertz, RPM and radians per second.Daten RateumrechnerConvert bandwidth between bit/s, kbit/s, Mbit/s, Gbit/s and byte-per-second units including IEC multiples.ForceumrechnerConvert newtons, kilonewtons, dynes, kilogram-force, pound-force, ounce-force, poundals and kips.TorqueumrechnerConvert newton-metres, kgf·m, kgf·cm, lbf·ft, lbf·in, ozf·in and dyne-centimetres.DensityumrechnerConvert kg/m³, g/cm³, g/mL, lb/ft³, lb/in³ and tonnes per cubic metre.Radiation DoseumrechnerConvert gray, rad, sievert and rem including milli and micro prefixes.ViscosityumrechnerConvert dynamic viscosity between Pa·s, mPa·s, centipoise, poise and lbf·s/ft².LuminanceumrechnerConvert cd/m², nits, lamberts, foot-lamberts, stilbs and cd/cm².IlluminanceumrechnerConvert lux, kilolux, phot, foot-candles and lumens per square foot.Convert areaConverts a unit of area to another format.Convert massConverts a unit of mass to another format.Convert speedConverts a unit of speed to another format.
Mathematik & Statistik 18
StatistikrechnerMean, median, mode, range, variance, standard deviation, standard error, quartiles and IQR from a list of numbers.PerzentilrechnerCompute any percentile of a data set with linear interpolation, plus all deciles.KorrelationsrechnerPearson and Spearman correlation, r², and the least-squares regression line for paired data.KombinationsrechnerC(n,r) with exact BigInt arithmetic and a list of the actual combinations for small inputs.PermutationsrechnerP(n,r) ordered arrangements computed exactly with BigInt — no floating point rounding.Primzahl FactorizationrechnerBreak any integer into prime factors and list every divisor with the divisor count.
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Primzahl ZahlenprüfungTest whether a number is prime and, if not, show its smallest divisors and divisor count.Primes Up To NList every prime number up to a limit, with the count.Math AusdrucksrechnerEvaluate arithmetic expressions with correct precedence, powers, factorials, functions and constants.BruchrechnerSimplify fractions, convert decimals to exact fractions and add, subtract, multiply or divide them.Dezimal to BruchConvert any decimal to its exact simplest fraction using continued-fraction search with a tolerance.Add and Subtract FractionsAdd, subtract, multiply or divide fractions with the common denominator and GCD reduction shown.Drop bytesCuts a slice of the specified number of bytes out of the data. Negative values are allowed.MeanComputes the mean (average) of a number list. If an item in the string is not a number it is excluded from the list. e.g. 0x0a 8 .5 .5 becomes 4.75Rotate leftRotates each byte to the left by the number of bits specified, optionally carrying the excess bits over to the next byte. Currently only supports 8-bit values.Rotate rightRotates each byte to the right by the number of bits specified, optionally carrying the excess bits over to the next byte. Currently only supports 8-bit values.SleepSleep causes the recipe to wait for a specified number of milliseconds before continuing execution.Standard DeviationComputes the standard deviation of a number list. If an item in the string is not a number it is excluded from the list. e.g. 0x0a 8 .5 becomes 4.089281382128433
Validatoren & Prüfsummen 15
Card ZahlenvalidatorValidate a card or IMEI with the Luhn algorithm, detect the brand and derive the missing check digit.ISBN-ValidatorCheck ISBN-10 and ISBN-13 check digits and compute the correct one for a truncated ISBN.Barcode Check DigitvalidatorValidate EAN-8, EAN-13, UPC-A and ITF-14 barcodes and see the weighted sum step by step.IBAN-ValidatorValidate an IBAN with MOD-97, check the national length and show the rearranged calculation.SWIFT BIC-ValidatorCheck an ISO 9362 BIC and split it into institution, country, location and branch codes.VIN-PrüfungValidate a 17-character vehicle VIN check digit and decode region, year and plant positions.
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Mod-11 Check DigitvalidatorValidate ISSN, ISMN, ORCID and other mod-11 identifiers, with the weighted sum shown.LEI-ValidatorValidate an ISO 17442 Legal Entity Identifier with the ISO 7064 MOD 97-10 scheme.Verhoeff CheckvalidatorApply the Verhoeff dihedral-group checksum that catches all single-digit and all transposition errors.Damm CheckvalidatorRun the Damm quasigroup checksum, which detects every single-digit error and adjacent transposition.Latitude LongitudeumrechnerConvert between decimal degrees and degrees-minutes-seconds, with hemisphere and UTM zone hints.Caret M-decodeDecodes caret or M-encoded strings, i.e. ^M turns into a newline, M-^] turns into 0x9d. Sources such as `cat -v`. Please be aware that when using `cat -v` ^_ (caret-underscore) will not be encoded, but represents a valid encoding (namely thFletcher-16 PrüfsummenThe Fletcher checksum is an algorithm for computing a position-dependent checksum devised by John Gould Fletcher at Lawrence Livermore Labs in the late 1970s. The objective of the Fletcher checksum was to provide error-detection properties Fletcher-32 PrüfsummenThe Fletcher checksum is an algorithm for computing a position-dependent checksum devised by John Gould Fletcher at Lawrence Livermore Labs in the late 1970s. The objective of the Fletcher checksum was to provide error-detection properties Fletcher-64 PrüfsummenThe Fletcher checksum is an algorithm for computing a position-dependent checksum devised by John Gould Fletcher at Lawrence Livermore Labs in the late 1970s. The objective of the Fletcher checksum was to provide error-detection properties