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时间戳工具 7
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CurrentUnix 时间Live clock showing Unix time in seconds and milliseconds.时间戳 to 日期转换器Turn a timestamp (s/ms/µs) into a formatted date instantly.日期 to 时间戳转换器Convert a calendar date & time into Unix epoch seconds.Milliseconds 转换器Convert milliseconds to seconds, minutes, hours and days.时间 Difference 计算器Distance between two timestamps or dates in every unit.FromUNIX 时间戳Converts 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).
日期时间工具 9
日期 Format 转换器Render any date in ISO, RFC, locale and custom formats.DaysBetween 日期Count days (and weeks/months) between two calendar dates.日期 Add Subtract 计算器Add or subtract days, weeks, months from a date.时区转换器Compare times across world timezones instantly.闰年 Year 检查器Check whether a year is a leap year and why.年龄计算器Exact age in years, months, days, hours and total days.
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ISO 周数字计算器Find the ISO-8601 week and weekday of any date.Get 时间Generates 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.ParseDateTimeParses 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
数字工具 13
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十六进制十进制二进制 Live 转换器Edit hex, dec, oct and bin simultaneously — all stay in sync.Roman Numeral 转换器Convert between Roman numerals and Arabic numbers.数字 to Words 转换器Spell out numbers in English words (cheques, captions).百分比计算器Percent of, increase/decrease and ratio problems.随机数字生成器Cryptographically random integers in any range.数字格式化工具Thousands separators and fixed decimals for any locale.阶乘计算器Exact big-integer factorials.GCD&LCM 计算器Greatest common divisor and least common multiple of a list.质数数字检查器Test primality and show the smallest factor.ConvertdataunitsConverts a unit of data to another format.ConvertdistanceConverts a unit of distance to another format.Unicode 文本 FormatAdds Unicode combining characters to change formatting of plaintext.
UUID 工具 7
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UUID v7 生成器Time-ordered sortable UUIDs for databases.ULID 生成器26-character lexicographically sortable unique IDs.GUID 生成器Microsoft-style bracketed GUIDs.UUID 校验器Validate a UUID/GUID and detect its version & variant.GenerateallchecksumsGenerates all available checksums for the input.GenerateUUIDGenerates an RFC 9562 (formerly RFC 4122) compliant Universally Unique Identifier (UUID),
单位换算器 25
长度转换器Convert metres, kilometres, centimetres, inches, feet, yards, miles and nautical miles.重量转换器Convert kilograms, grams, tonnes, pounds, ounces, stones and carats.温度转换器Convert Celsius, Fahrenheit, Kelvin and Rankine with the formulas shown.体积转换器Convert litres, millilitres, US and imperial gallons, cups, pints, quarts and fluid ounces.速度转换器Convert km/h, mph, metres per second, knots, feet per second and Mach number.面积转换器Convert square metres, hectares, acres, square feet, square inches and square miles.
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压力转换器Convert pascbar, psi, atm, torr, mmHg, kgf/cm² and inches of mercury.能量转换器Convert joules, kilowatt-hours, calories, kilocalories, BTU, electronvolts and tonnes of oil equivalent.功率转换器Convert watts, kilowatts, mechanical and metric horsepower, BTU/h and kcal/h.角度转换器Convert degrees, radians, gradians, arcminutes, arcseconds and turns.时间时长转换器Convert nanoseconds to centuries: seconds, minutes, hours, days, weeks, months and years.数据存储转换器Convert bits, bytes and SI versus IEC multiples — kB, MB, GB, KiB, MiB, GiB, TiB.Typography Unit 转换器Convert CSS px, pt, pc, mm, cm, in, Q and didot/cicero at the standard 96 dpi reference.频率转换器Convert hertz, kilohertz, megahertz, gigahertz, RPM and radians per second.数据 Rate 转换器Convert bandwidth between bit/s, kbit/s, Mbit/s, Gbit/s and byte-per-second units including IEC multiples.Force 转换器Convert newtons, kilonewtons, dynes, kilogram-force, pound-force, ounce-force, poundals and kips.Torque 转换器Convert newton-metres, kgf·m, kgf·cm, lbf·ft, lbf·in, ozf·in and dyne-centimetres.Density 转换器Convert kg/m³, g/cm³, g/mL, lb/ft³, lb/in³ and tonnes per cubic metre.Radiation Dose 转换器Convert gray, rad, sievert and rem including milli and micro prefixes.Viscosity 转换器Convert dynamic viscosity between Pa·s, mPa·s, centipoise, poise and lbf·s/ft².Luminance 转换器Convert cd/m², nits, lamberts, foot-lamberts, stilbs and cd/cm².Illuminance 转换器Convert lux, kilolux, phot, foot-candles and lumens per square foot.ConvertareaConverts a unit of area to another format.ConvertmassConverts a unit of mass to another format.ConvertspeedConverts a unit of speed to another format.
数学与统计 18
统计计算器Mean, median, mode, range, variance, standard deviation, standard error, quartiles and IQR from a list of numbers.百分位计算器Compute any percentile of a data set with linear interpolation, plus all deciles.相关性计算器Pearson and Spearman correlation, r², and the least-squares regression line for paired data.组合计算器C(n,r) with exact BigInt arithmetic and a list of the actual combinations for small inputs.排列计算器P(n,r) ordered arrangements computed exactly with BigInt — no floating point rounding.质数 Factorization 计算器Break any integer into prime factors and list every divisor with the divisor count.
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质数数字检查器Test whether a number is prime and, if not, show its smallest divisors and divisor count.PrimesUpToNList every prime number up to a limit, with the count.Math 表达式计算器Evaluate arithmetic expressions with correct precedence, powers, factorials, functions and constants.分数计算器Simplify fractions, convert decimals to exact fractions and add, subtract, multiply or divide them.十进制 to 分数Convert any decimal to its exact simplest fraction using continued-fraction search with a tolerance.AddandSubtractFractionsAdd, subtract, multiply or divide fractions with the common denominator and GCD reduction shown.DropbytesCuts 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 4.75RotateleftRotates 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.RotaterightRotates 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.StandardDeviationComputes 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
校验与校验和 15
Card 数字校验器Validate a card or IMEI with the Luhn algorithm, detect the brand and derive the missing check digit.ISBN 校验器Check ISBN-10 and ISBN-13 check digits and compute the correct one for a truncated ISBN.Barcode Check Digit 校验器Validate EAN-8, EAN-13, UPC-A and ITF-14 barcodes and see the weighted sum step by step.IBAN 校验器Validate an IBAN with MOD-97, check the national length and show the rearranged calculation.SWIFT BIC 校验器Check an ISO 9362 BIC and split it into institution, country, location and branch codes.VIN 检查器Validate a 17-character vehicle VIN check digit and decode region, year and plant positions.
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Mod-11 Check Digit 校验器Validate ISSN, ISMN, ORCID and other mod-11 identifiers, with the weighted sum shown.LEI 校验器Validate an ISO 17442 Legal Entity Identifier with the ISO 7064 MOD 97-10 scheme.Verhoeff Check 校验器Apply the Verhoeff dihedral-group checksum that catches all single-digit and all transposition errors.Damm Check 校验器Run the Damm quasigroup checksum, which detects every single-digit error and adjacent transposition.Latitude Longitude 转换器Convert between decimal degrees and degrees-minutes-seconds, with hemisphere and UTM zone hints.CaretM-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 校验和The 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 校验和The 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 校验和The 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