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時間戳記工具 7
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CurrentUnix 時間Live clock showing Unix time in seconds and milliseconds.時間戳記 to 日期轉換器Turn a timestamp (s/ms/µs) into a formatted date instantly.日期 to 時間戳記轉換器Convert a calendar date & time into Unix epoch seconds.Milliseconds 轉換器Convert milliseconds to seconds, minutes, hours and days.時間 Difference 計算機Distance between two timestamps or dates in every unit.FromUNIX 時間戳記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).
日期時間工具 9
日期 Format 轉換器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 計算機Add or subtract days, weeks, months from a date.時區轉換器Compare times across world timezones instantly.閏年 Year 檢查器Check whether a year is a leap year and why.年齡計算機Exact age in years, months, days, hours and total days.
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ISO 週數字計算機Find the ISO-8601 week and weekday of any date.Get 時間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
數字工具 13
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十六進位十進位二進位 Live 轉換器Edit hex, dec, oct and bin simultaneously — all stay in sync.Roman Numeral 轉換器Convert between Roman numerals and Arabic numbers.數字 to Words 轉換器Spell out numbers in English words (cheques, captions).百分比計算機Percent of, increase/decrease and ratio problems.隨機數字產生器Cryptographically random integers in any range.數字格式化工具Thousands separators and fixed decimals for any locale.階乘計算機Exact big-integer factorials.GCD&LCM 計算機Greatest common divisor and least common multiple of a list.質數數字檢查器Test primality and show the smallest factor.ConvertdataunitsConverts a unit of data to another format.ConvertdistanceConverts a unit of distance to another format.Unicode 文字 FormatAdds Unicode combining characters to change formatting of plaintext.
UUID 工具 7
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UUID v7 產生器Time-ordered sortable UUIDs for databases.ULID 產生器26-character lexicographically sortable unique IDs.GUID 產生器Microsoft-style bracketed GUIDs.UUID 驗證器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),
單位轉換器 25
長度轉換器Convert metres, kilometres, centimetres, inches, feet, yards, miles and nautical miles.重量轉換器Convert kilograms, grams, tonnes, pounds, ounces, stones and carats.溫度轉換器Convert Celsius, Fahrenheit, Kelvin and Rankine with the formulas shown.體積轉換器Convert litres, millilitres, US and imperial gallons, cups, pints, quarts and fluid ounces.速度轉換器Convert km/h, mph, metres per second, knots, feet per second and Mach number.面積轉換器Convert square metres, hectares, acres, square feet, square inches and square miles.
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壓力轉換器Convert pascbar, psi, atm, torr, mmHg, kgf/cm² and inches of mercury.能量轉換器Convert joules, kilowatt-hours, calories, kilocalories, BTU, electronvolts and tonnes of oil equivalent.功率轉換器Convert watts, kilowatts, mechanical and metric horsepower, BTU/h and kcal/h.角度轉換器Convert degrees, radians, gradians, arcminutes, arcseconds and turns.時間時長轉換器Convert nanoseconds to centuries: seconds, minutes, hours, days, weeks, months and years.資料儲存轉換器Convert bits, bytes and SI versus IEC multiples — kB, MB, GB, KiB, MiB, GiB, TiB.Typography Unit 轉換器Convert CSS px, pt, pc, mm, cm, in, Q and didot/cicero at the standard 96 dpi reference.頻率轉換器Convert hertz, kilohertz, megahertz, gigahertz, RPM and radians per second.資料 Rate 轉換器Convert bandwidth between bit/s, kbit/s, Mbit/s, Gbit/s and byte-per-second units including IEC multiples.Force 轉換器Convert newtons, kilonewtons, dynes, kilogram-force, pound-force, ounce-force, poundals and kips.Torque 轉換器Convert newton-metres, kgf·m, kgf·cm, lbf·ft, lbf·in, ozf·in and dyne-centimetres.Density 轉換器Convert kg/m³, g/cm³, g/mL, lb/ft³, lb/in³ and tonnes per cubic metre.Radiation Dose 轉換器Convert gray, rad, sievert and rem including milli and micro prefixes.Viscosity 轉換器Convert dynamic viscosity between Pa·s, mPa·s, centipoise, poise and lbf·s/ft².Luminance 轉換器Convert cd/m², nits, lamberts, foot-lamberts, stilbs and cd/cm².Illuminance 轉換器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.
數學與統計 18
統計計算機Mean, median, mode, range, variance, standard deviation, standard error, quartiles and IQR from a list of numbers.百分位計算機Compute any percentile of a data set with linear interpolation, plus all deciles.相關性計算機Pearson and Spearman correlation, r², and the least-squares regression line for paired data.組合計算機C(n,r) with exact BigInt arithmetic and a list of the actual combinations for small inputs.排列計算機P(n,r) ordered arrangements computed exactly with BigInt — no floating point rounding.質數 Factorization 計算機Break any integer into prime factors and list every divisor with the divisor count.
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質數數字檢查器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 運算式計算機Evaluate arithmetic expressions with correct precedence, powers, factorials, functions and constants.分數計算機Simplify fractions, convert decimals to exact fractions and add, subtract, multiply or divide them.十進位 to 分數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
驗證與檢查碼 15
Card 數字驗證器Validate a card or IMEI with the Luhn algorithm, detect the brand and derive the missing check digit.ISBN 驗證器Check ISBN-10 and ISBN-13 check digits and compute the correct one for a truncated ISBN.Barcode Check Digit 驗證器Validate EAN-8, EAN-13, UPC-A and ITF-14 barcodes and see the weighted sum step by step.IBAN 驗證器Validate an IBAN with MOD-97, check the national length and show the rearranged calculation.SWIFT BIC 驗證器Check an ISO 9362 BIC and split it into institution, country, location and branch codes.VIN 檢查器Validate a 17-character vehicle VIN check digit and decode region, year and plant positions.
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Mod-11 Check Digit 驗證器Validate ISSN, ISMN, ORCID and other mod-11 identifiers, with the weighted sum shown.LEI 驗證器Validate an ISO 17442 Legal Entity Identifier with the ISO 7064 MOD 97-10 scheme.Verhoeff Check 驗證器Apply the Verhoeff dihedral-group checksum that catches all single-digit and all transposition errors.Damm Check 驗證器Run the Damm quasigroup checksum, which detects every single-digit error and adjacent transposition.Latitude Longitude 轉換器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 檢查碼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 檢查碼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 檢查碼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