Unit Converter
Convert ten categories of units in one view: length, weight, area, volume, temperature, speed, time, storage, pressure and power
长度换算
换算结果
| 单位 | 符号 | 数值 | 操作 |
|---|
About this tool
Converters are easy to find. The harder part is knowing which unit you are converting: gallons differ between the US and UK, horsepower has two definitions, and a kilobyte can mean 1000 or 1024 bytes. This tool lists every unit in a category at once, so a single conversion is never made in isolation:
- Ten categories: length, weight, area, volume, temperature, speed, time, data storage, pressure and power
- Whole table at once: every unit in the category is calculated from one input, with the source unit highlighted
- Copy one or all: copy a single result or the whole table with its heading
- Reverse conversion: any row can become the new input and source unit for a quick sanity check
- Temperature handled separately: Celsius, Fahrenheit, Kelvin and Rankine use offset formulas rather than a simple ratio
- Scientific notation: very large and very small values switch automatically, while ordinary numbers keep significant digits and thousands separators
When to use it
- Converting gallons, litres and cubic feet for imported cars or oven capacity
- Checking ping, mu, square metres and hectares for property
- Untangling KB versus KiB and Mbps versus MB/s in storage and network work
- Converting Fahrenheit temperatures, mile distances and pound weights while travelling
- Comparing bar, psi, MPa, horsepower and kilowatts on equipment specs
Conversions that go wrong
| Conversion | Exact relation | Watch out for |
|---|---|---|
| US and UK gallons | 1 gal(US)=3.785 L, 1 gal(UK)=4.546 L | About 20% apart; confirm the system before using fuel or recipe figures |
| Mu and square metres | 1 mu is about 666.67 square metres, 1 hectare = 15 mu | Mu is approximate; land registration uses square metres |
| KB and KiB | 1 KB = 1000 B, 1 KiB = 1024 B | Drive makers use 1000, operating systems show 1024 |
| Celsius and Fahrenheit | F = C x 9 / 5 + 32 | A 5 C difference is not 5 F; omit the +32 when converting a difference |
| Imperial and metric horsepower | 1 hp is about 745.7 W, 1 PS about 735.5 W | About 1.4% apart; check which one a spec sheet uses |
| Troy and avoirdupois ounces | 1 ozt = 31.1035 g, 1 oz = 28.3495 g | Gold uses troy ounces, food uses avoirdupois |
FAQ
- Why does 1 bit show as 0.125 bytes? The storage category is based on bytes, and one byte is eight bits, so one bit is 0.125 bytes
- Can it convert compound units? It handles equivalent values of a single physical quantity. Algebraic steps, such as turning km/h into m/s and then multiplying by time, need to be done with the formula
- How many digits are kept? Eight significant digits, switching to scientific notation above 10 to the 12th or below 10 to the minus 6th to avoid strings of meaningless zeros