Calculators
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タイムスタンプツール 7
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CurrentUnix 時刻Live clock showing Unix time in seconds and milliseconds.タイムスタンプ to 日付変換Turn a timestamp (s/ms/µs) into a formatted date instantly.日付 to タイムスタンプ変換Convert a calendar date & time into Unix epoch seconds.Milliseconds 変換Convert milliseconds to seconds, minutes, hours and days.時刻 Difference 計算Distance between two timestamps or dates in every unit.FromUNIX タイムスタンプ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).
日時ツール 9
日付 Format 変換Render any date in ISO, RFC, locale and custom formats.DaysBetween 日付Count days (and weeks/months) between two calendar dates.日付 Add Subtract 計算Add or subtract days, weeks, months from a date.タイムゾーン変換Compare times across world timezones instantly.うるう年 Year チェックCheck whether a year is a leap year and why.年齢計算Exact age in years, months, days, hours and total days.
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ISO 週数値計算Find the ISO-8601 week and weekday of any date.Get 時刻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
数値ツール 13
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16 進 10 進バイナリ Live 変換Edit hex, dec, oct and bin simultaneously — all stay in sync.Roman Numeral 変換Convert between Roman numerals and Arabic numbers.数値 to Words 変換Spell out numbers in English words (cheques, captions).パーセント計算Percent of, increase/decrease and ratio problems.乱数数値生成Cryptographically random integers in any range.数値整形Thousands separators and fixed decimals for any locale.階乗計算Exact big-integer factorials.GCD&LCM 計算Greatest common divisor and least common multiple of a list.素数数値チェックTest primality and show the smallest factor.ConvertdataunitsConverts a unit of data to another format.ConvertdistanceConverts a unit of distance to another format.Unicode テキスト FormatAdds Unicode combining characters to change formatting of plaintext.
UUID ツール 7
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UUID v7 生成Time-ordered sortable UUIDs for databases.ULID 生成26-character lexicographically sortable unique IDs.GUID 生成Microsoft-style bracketed GUIDs.UUID 検証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),
単位変換 25
長さ変換Convert metres, kilometres, centimetres, inches, feet, yards, miles and nautical miles.重さ変換Convert kilograms, grams, tonnes, pounds, ounces, stones and carats.温度変換Convert Celsius, Fahrenheit, Kelvin and Rankine with the formulas shown.体積変換Convert litres, millilitres, US and imperial gallons, cups, pints, quarts and fluid ounces.速度変換Convert km/h, mph, metres per second, knots, feet per second and Mach number.面積変換Convert square metres, hectares, acres, square feet, square inches and square miles.
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圧力変換Convert pascbar, psi, atm, torr, mmHg, kgf/cm² and inches of mercury.エネルギー変換Convert joules, kilowatt-hours, calories, kilocalories, BTU, electronvolts and tonnes of oil equivalent.電力変換Convert watts, kilowatts, mechanical and metric horsepower, BTU/h and kcal/h.角度変換Convert degrees, radians, gradians, arcminutes, arcseconds and turns.時刻期間変換Convert nanoseconds to centuries: seconds, minutes, hours, days, weeks, months and years.データストレージ変換Convert bits, bytes and SI versus IEC multiples — kB, MB, GB, KiB, MiB, GiB, TiB.Typography Unit 変換Convert CSS px, pt, pc, mm, cm, in, Q and didot/cicero at the standard 96 dpi reference.頻度変換Convert hertz, kilohertz, megahertz, gigahertz, RPM and radians per second.データ Rate 変換Convert bandwidth between bit/s, kbit/s, Mbit/s, Gbit/s and byte-per-second units including IEC multiples.Force 変換Convert newtons, kilonewtons, dynes, kilogram-force, pound-force, ounce-force, poundals and kips.Torque 変換Convert newton-metres, kgf·m, kgf·cm, lbf·ft, lbf·in, ozf·in and dyne-centimetres.Density 変換Convert kg/m³, g/cm³, g/mL, lb/ft³, lb/in³ and tonnes per cubic metre.Radiation Dose 変換Convert gray, rad, sievert and rem including milli and micro prefixes.Viscosity 変換Convert dynamic viscosity between Pa·s, mPa·s, centipoise, poise and lbf·s/ft².Luminance 変換Convert cd/m², nits, lamberts, foot-lamberts, stilbs and cd/cm².Illuminance 変換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・統計 18
統計計算Mean, median, mode, range, variance, standard deviation, standard error, quartiles and IQR from a list of numbers.パーセンタイル計算Compute any percentile of a data set with linear interpolation, plus all deciles.相関計算Pearson and Spearman correlation, r², and the least-squares regression line for paired data.組合せ計算C(n,r) with exact BigInt arithmetic and a list of the actual combinations for small inputs.順列計算P(n,r) ordered arrangements computed exactly with BigInt — no floating point rounding.素数 Factorization 計算Break any integer into prime factors and list every divisor with the divisor count.
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素数数値チェック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 数式計算Evaluate arithmetic expressions with correct precedence, powers, factorials, functions and constants.分数計算Simplify fractions, convert decimals to exact fractions and add, subtract, multiply or divide them.10 進 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
検証・チェックサム 15
Card 数値検証Validate a card or IMEI with the Luhn algorithm, detect the brand and derive the missing check digit.ISBN 検証Check ISBN-10 and ISBN-13 check digits and compute the correct one for a truncated ISBN.Barcode Check Digit 検証Validate EAN-8, EAN-13, UPC-A and ITF-14 barcodes and see the weighted sum step by step.IBAN 検証Validate an IBAN with MOD-97, check the national length and show the rearranged calculation.SWIFT BIC 検証Check an ISO 9362 BIC and split it into institution, country, location and branch codes.VIN チェックValidate a 17-character vehicle VIN check digit and decode region, year and plant positions.
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Mod-11 Check Digit 検証Validate ISSN, ISMN, ORCID and other mod-11 identifiers, with the weighted sum shown.LEI 検証Validate an ISO 17442 Legal Entity Identifier with the ISO 7064 MOD 97-10 scheme.Verhoeff Check 検証Apply the Verhoeff dihedral-group checksum that catches all single-digit and all transposition errors.Damm Check 検証Run the Damm quasigroup checksum, which detects every single-digit error and adjacent transposition.Latitude Longitude 変換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 チェックサム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 チェックサム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 チェックサム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