Calculators
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Outils timestamp 7
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Current Unix heureLive clock showing Unix time in seconds and milliseconds.Convertisseur de horodatage to dateTurn a timestamp (s/ms/µs) into a formatted date instantly.Convertisseur de date to horodatageConvert a calendar date & time into Unix epoch seconds.Convertisseur de MillisecondsConvert milliseconds to seconds, minutes, hours and days.Calculateur de heure DifferenceDistance between two timestamps or dates in every unit.From UNIX horodatageConverts 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).
Outils date et heure 9
Convertisseur de date FormatRender any date in ISO, RFC, locale and custom formats.Days Between datesCount days (and weeks/months) between two calendar dates.Calculateur de date Add SubtractAdd or subtract days, weeks, months from a date.Convertisseur de fuseau horaireCompare times across world timezones instantly.Vérificateur de année bissextile YearCheck whether a year is a leap year and why.Calculateur de âgeExact age in years, months, days, hours and total days.
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Calculateur de ISO semaine nombreFind the ISO-8601 week and weekday of any date.Get heureGenerates 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
Outils numériques 13
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Convertisseur de hexadécimal décimal binaire LiveEdit hex, dec, oct and bin simultaneously — all stay in sync.Convertisseur de Roman NumeralConvert between Roman numerals and Arabic numbers.Convertisseur de nombre to WordsSpell out numbers in English words (cheques, captions).Calculateur de pourcentagePercent of, increase/decrease and ratio problems.Générateur de aléatoire nombreCryptographically random integers in any range.Formateur de nombreThousands separators and fixed decimals for any locale.Calculateur de factorielleExact big-integer factorials.Calculateur de GCD & LCMGreatest common divisor and least common multiple of a list.Vérificateur de nombres premiers nombreTest 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 texte FormatAdds Unicode combining characters to change formatting of plaintext.
Outils UUID 7
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Générateur de UUID v7Time-ordered sortable UUIDs for databases.Générateur de ULID26-character lexicographically sortable unique IDs.Générateur de GUIDMicrosoft-style bracketed GUIDs.Validateur de UUIDValidate 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),
Convertisseurs d’unités 25
Convertisseur de longueurConvert metres, kilometres, centimetres, inches, feet, yards, miles and nautical miles.Convertisseur de poidsConvert kilograms, grams, tonnes, pounds, ounces, stones and carats.Convertisseur de températureConvert Celsius, Fahrenheit, Kelvin and Rankine with the formulas shown.Convertisseur de volumeConvert litres, millilitres, US and imperial gallons, cups, pints, quarts and fluid ounces.Convertisseur de vitesseConvert km/h, mph, metres per second, knots, feet per second and Mach number.Convertisseur de surfaceConvert square metres, hectares, acres, square feet, square inches and square miles.
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Convertisseur de pressionConvert pascbar, psi, atm, torr, mmHg, kgf/cm² and inches of mercury.Convertisseur de énergieConvert joules, kilowatt-hours, calories, kilocalories, BTU, electronvolts and tonnes of oil equivalent.Convertisseur de puissanceConvert watts, kilowatts, mechanical and metric horsepower, BTU/h and kcal/h.Convertisseur de angleConvert degrees, radians, gradians, arcminutes, arcseconds and turns.Convertisseur de heure duréeConvert nanoseconds to centuries: seconds, minutes, hours, days, weeks, months and years.Convertisseur de données stockageConvert bits, bytes and SI versus IEC multiples — kB, MB, GB, KiB, MiB, GiB, TiB.Convertisseur de Typography UnitConvert CSS px, pt, pc, mm, cm, in, Q and didot/cicero at the standard 96 dpi reference.Convertisseur de fréquenceConvert hertz, kilohertz, megahertz, gigahertz, RPM and radians per second.Convertisseur de données RateConvert bandwidth between bit/s, kbit/s, Mbit/s, Gbit/s and byte-per-second units including IEC multiples.Convertisseur de ForceConvert newtons, kilonewtons, dynes, kilogram-force, pound-force, ounce-force, poundals and kips.Convertisseur de TorqueConvert newton-metres, kgf·m, kgf·cm, lbf·ft, lbf·in, ozf·in and dyne-centimetres.Convertisseur de DensityConvert kg/m³, g/cm³, g/mL, lb/ft³, lb/in³ and tonnes per cubic metre.Convertisseur de Radiation DoseConvert gray, rad, sievert and rem including milli and micro prefixes.Convertisseur de ViscosityConvert dynamic viscosity between Pa·s, mPa·s, centipoise, poise and lbf·s/ft².Convertisseur de LuminanceConvert cd/m², nits, lamberts, foot-lamberts, stilbs and cd/cm².Convertisseur de IlluminanceConvert 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.
Mathématiques et statistiques 18
Calculateur de statistiquesMean, median, mode, range, variance, standard deviation, standard error, quartiles and IQR from a list of numbers.Calculateur de percentileCompute any percentile of a data set with linear interpolation, plus all deciles.Calculateur de corrélationPearson and Spearman correlation, r², and the least-squares regression line for paired data.Calculateur de combinaisonC(n,r) with exact BigInt arithmetic and a list of the actual combinations for small inputs.Calculateur de permutationP(n,r) ordered arrangements computed exactly with BigInt — no floating point rounding.Calculateur de nombres premiers FactorizationBreak any integer into prime factors and list every divisor with the divisor count.
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Vérificateur de nombres premiers nombreTest 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.Calculateur de Math expressionEvaluate arithmetic expressions with correct precedence, powers, factorials, functions and constants.Calculateur de fractionSimplify fractions, convert decimals to exact fractions and add, subtract, multiply or divide them.décimal to fractionConvert 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
Validateurs et sommes de contrôle 15
Validateur de Card nombreValidate a card or IMEI with the Luhn algorithm, detect the brand and derive the missing check digit.Validateur de ISBNCheck ISBN-10 and ISBN-13 check digits and compute the correct one for a truncated ISBN.Validateur de Barcode Check DigitValidate EAN-8, EAN-13, UPC-A and ITF-14 barcodes and see the weighted sum step by step.Validateur de IBANValidate an IBAN with MOD-97, check the national length and show the rearranged calculation.Validateur de SWIFT BICCheck an ISO 9362 BIC and split it into institution, country, location and branch codes.Vérificateur de VINValidate a 17-character vehicle VIN check digit and decode region, year and plant positions.
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Validateur de Mod-11 Check DigitValidate ISSN, ISMN, ORCID and other mod-11 identifiers, with the weighted sum shown.Validateur de LEIValidate an ISO 17442 Legal Entity Identifier with the ISO 7064 MOD 97-10 scheme.Validateur de Verhoeff CheckApply the Verhoeff dihedral-group checksum that catches all single-digit and all transposition errors.Validateur de Damm CheckRun the Damm quasigroup checksum, which detects every single-digit error and adjacent transposition.Convertisseur de Latitude LongitudeConvert 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 somme de contrôleThe 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 somme de contrôleThe 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 somme de contrôleThe 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