单位换算

在平方米、平方英尺、英亩、公顷、平方英里、平方千米等单位之间转换面积——即时且准确。

使用实时、每日更新的汇率在主要世界货币之间进行转换。

在 kg/m3、g/cm3、g/ml、kg/L、lb/ft3 和 lb/in3 之间快速准确地转换密度，适用于科学和工程。

按官方不可撤销的固定换算率1欧元 = 1.95583保加利亚列弗，在保加利亚列弗与欧元之间互换（依法规定的舍入方式）。

在瓦特、千瓦、兆瓦、马力、公制马力、英热单位每小时和英尺磅每秒之间转换功率。

在数字与罗马数字之间双向转换（1–3999），采用标准的减法记数规则。

在 m/s、km/h、mph、节和英尺每秒之间快速准确地转换。

使用精确公式即时转换摄氏度、华氏度、开尔文和兰氏度。

在升、毫升、立方米、美制加仑、夸脱、品脱、杯、液量盎司、汤匙和英制加仑之间转换体积。

Calculate the acreage of a rectangular, triangular or circular plot from its dimensions, with results in acres, sq ft, sq m and hectares.

在度、弧度、百分度、角分、角秒和圈之间转换角度——即时且精确。

Convert atmospheres (atm) to pascal, kPa, bar, psi, mmHg, Torr, inHg and millibar — or convert any pressure unit to atm.

估算数据经 Base64 编码后的大小，包含约 33% 的开销以及可选的换行/数据 URI 填充。

将十进制数转换为紧缩二进制编码十进制（BCD）并反向转换，每个数字编码为独立的 4 位半字节。

Convert any non-negative integer between binary (base 2), octal (base 8), decimal (base 10) and hexadecimal (base 16) instantly.

Convert digital data sizes between bits, bytes, KB, MB, GB, TB and binary KiB, MiB, GiB, TiB — with the decimal vs binary difference explained.

Convert centimeters to inches, feet, meters, millimeters, yards and miles instantly with a full reference table.

Convert an RGB color (0–255 per channel) to HEX, HSL, HSV and CMYK — with a live color preview swatch.

在茶匙、汤匙、液量盎司、杯、品脱、夸脱、毫升和升之间转换烹饪计量单位。

Convert typing speed between characters per second (CPS), words per minute (WPM), CPM, and keystrokes per hour (KPH).

Calculate cubic feet from length, width and height in feet. Instantly converts to cubic yards, cubic inches, cubic meters, liters and US gallons.

Calculate cubic meters from length, width and height in meters. Converts to liters, cubic feet, cubic inches, cubic centimeters and gallons.

准确地转换字节、KB、MB、GB、TB 以及二进制 KiB、MiB、GiB 单位。

即时在比特每秒、kbit/s、Mbit/s、Gbit/s 以及字节、KB/s、MB/s、GB/s 之间转换数据传输速率。

计算数据集通过链路的实际传输时间，考虑协议/开销效率以获得有效吞吐量。

Convert days to seconds, minutes, hours, weeks, months and years — and back. Uses exact hour/minute/second factors and a 365.25-day average year.

Convert decimetres (dm) to and from millimetres, centimetres, metres, kilometres, inches, feet, yards, and miles.

根据文件大小和连接速度估算文件的下载时间，并以 hh:mm:ss 格式清晰显示结果。

交换 16/32/64 位十六进制值的字节顺序，在大端序和小端序之间转换。

在焦耳、千焦、卡路里、千卡、瓦时、千瓦时、英热单位、英尺磅和电子伏特之间转换能量。

Convert Fahrenheit to Celsius, Kelvin and Rankine instantly with exact formulas and a visual temperature scale.

Convert feet to meters, inches, centimeters, millimeters, yards, miles, kilometers, and nautical miles instantly with exact values.

在牛顿、千牛顿、达因、磅力、千克力和盎司力之间快速准确地转换力。

即时在赫兹、千赫、兆赫、吉赫、太赫和转每分 (rpm) 之间转换频率。

在 L/100km、千米每升、美制英里每加仑和英制英里每加仑之间准确转换燃油经济性。

Convert US liquid, US dry or Imperial gallons to litres, millilitres, quarts, pints, cups, fluid ounces and cubic units.

Convert any English word or phrase to a gematria number value using Simple (A=1–Z=26), Reverse, or Reduced systems.

在标准二进制和反射格雷码之间转换，相邻值恰好只有一位不同。

Calculate the isopsephy (Greek gematria) value of any Greek word or phrase. Each letter maps to its Milesian numeral: Α=1, Ι=10, Ρ=100, Ω=800 and so on.

在厘米与英尺加英寸之间转换身高。切换方向以进行 cm → ft/in 或 ft/in → cm 转换，并显示米制数值。免费、即时且精确。

将十六进制颜色代码（#RGB 或 #RRGGBB）转换为红、绿、蓝通道值和 CSS rgb() 字符串。

Convert hours to minutes, seconds, milliseconds, days, weeks, months and years instantly. Supports decimal hours (e.g. 1.5 h).

将十进制数分解为 32 位（单精度）和 64 位（双精度）的 IEEE-754 符号位、指数和尾数位。

Convert between imperial (inches, feet, pounds, gallons, °F) and metric units instantly — all four measurement types in one tool.

Convert inches to millimetres, centimetres, metres, feet, yards and miles instantly using exact SI definitions.

Convert kilometres to miles, metres, feet, yards, inches, nautical miles and light-years — or convert any distance to kilometres.

Convert kilopascals (kPa) to pascals, MPa, bar, atm, psi, mmHg, Torr, inHg and mbar — or convert any pressure unit to kPa.

Convert land area between acres, hectares, square meters, square feet, sq km, sq miles, rai, cents and marla instantly.

Convert normal text into leet speak (1337) by substituting letters with numbers and symbols — basic or advanced mode.

在米、千米、英里、英尺、英寸、码等单位之间转换——即时且准确。

Convert between litres, cubic centimetres (cc), millilitres and US gallons — plus fl oz and cups in one step.

Convert Mbps to MB/s, KB/s and Gbps, and calculate how long it takes to download or upload any file at your speed.

Convert mils (thousandths of an inch) to micrometers, millimeters, centimeters, meters and inches instantly.

Convert miles to kilometers, meters, feet, yards, nautical miles and centimeters instantly with exact international conversion factors.

Convert millimeters to inches, centimeters, meters, micrometers, feet, yards and miles instantly with exact conversion factors.

Convert inches, feet, yards, centimeters, meters, kilometers or micrometers to millimeters instantly with exact conversion factors.

Convert megapascals (MPa) to psi, bar, kPa, atm, GPa, Torr, mmHg and more — or convert any pressure unit to MPa.

Convert torque between Newton-meters, foot-pounds, inch-pounds, kgf·m and Newton-centimeters instantly.

Convert nanometres to micrometres, millimetres, metres, angstroms and picometres — or convert any of those back to nm.

在二进制、八进制、十进制和十六进制之间转换任意整数。输入一个值，选择它的进制，即可即时查看全部四种表示形式。

Calculate how many sheets of paper and reams to buy for a print job — supports duplex printing and multiple paper sizes.

Convert pounds and ounces to kilograms, grams, stones and total ounces. Enter lb + oz together for a combined weight.

Convert parts per million (ppm) to ppb, ppt, percent, per mille, mg/kg, mg/L and μg/L — and back from any of those units.

在帕斯卡、千帕、兆帕、巴、psi、大气压、mmHg 和托之间转换压强——快速且准确。

Convert PSI (pounds per square inch) to bar, kPa, MPa, Pa, atm, mmHg, inHg, Torr and psf — or convert any pressure unit back to psi.

将红、绿、蓝值（0-255）转换为 #RRGGBB 十六进制代码以及可直接使用的 CSS rgb() 字符串。

将 RGB 颜色通道转换为 HSL（色相度数、饱和度和亮度百分比），便于颜色调整。

即时在纳秒、微秒、毫秒、秒、分钟、小时、天、周、月和年之间转换时间。

在牛顿米、千牛顿米、磅英尺、磅英寸和千克力米之间准确转换扭矩。

Convert any text to Unicode code points (U+XXXX hex, decimal or binary) and see the UTF-8 byte count, character count and script distribution.

Convert a Unix timestamp (seconds since 1970-01-01 UTC) to a human-readable UTC date and time, and see days, weeks, and years elapsed.

根据码率和时长（可选音频轨道）估算视频文件大小，或反向求解所需码率。

检查两个十六进制颜色之间的对比度，以及是否符合 WCAG AA/AAA 对普通文本和大文本的要求。

快速准确地转换千克、克、磅、盎司、英石和吨。

Convert any distance to obscure and unusual units: smoots, cubits, furlongs, hands, fathoms, chains, leagues and light years.

Convert yards to metres, centimetres, feet, inches, miles, furlongs and more using exact 1959 SI definitions.