長さ、質量、面積、体積、速度、温度、圧力などをまとめて変換できる単位変換ツールです。
メートル法・ヤードポンド法・米国単位の間で単位をすぐに変換できます。よく使う変換は cm→インチ、kg→lb、摂氏→華氏、km→マイル です。
よく使う換算係数
| km/h | m/s | mph | kn | |
|---|---|---|---|---|
| 1 km/h | 1 | 0.277778 | 0.621371 | 0.539957 |
| 1 m/s | 3.6 | 1 | 2.23694 | 1.94384 |
| 1 mph | 1.60934 | 0.44704 | 1 | 0.868976 |
| 1 kn | 1.852 | 0.514444 | 1.15078 | 1 |
単位変換 FAQs
A unit converter converts measurements between different unit systems, including metric, imperial, and US customary units.
You can convert common measurements such as length, mass, volume, area, speed, time, temperature, pressure, power, energy, torque, density, acceleration, angle, data storage, and more.
Enter a value, choose the unit you are converting from, and then choose the unit you want to convert to. The result updates instantly.
Yes. This page is designed for fast metric-to-imperial, imperial-to-metric, US customary, and SI unit conversions across common measurement categories.
Yes. This converter supports common metric-to-imperial conversions such as cm to inches, kg to lbs, km to miles, and Celsius to Fahrenheit.
Popular conversions include cm to inches, meters to feet, kg to lbs, liters to gallons, km to miles, mph to km/h, and Celsius to Fahrenheit.
Yes. It can be used for everyday conversions as well as study, travel, fitness, shopping, science, and engineering tasks.
Not always. Some units have the same name but different values. For example, a US gallon and an imperial gallon are different sizes.
Dedicated converter categories, such as acceleration, pressure, energy, or density, make it easier to choose the correct units and get precise results for a specific measurement type.