A comprehensive list of various measurement units including SI units, Imperial/US customary units, and Japanese traditional units.
Overview
Measurement Units
Measurement units are standards for expressing physical quantities numerically. Various systems exist, including the International System of Units (SI), the Imperial/US customary system, and Shakkanho (Japanese traditional units). The SI system is used as the global standard in scientific and engineering fields, the Imperial/US customary system is primarily used in daily life in the United States, and Shakkanho consists of Japanese traditional units, some of which are still used conventionally today.
SI units
International System of Units
Imperial units
US customary units
Shakkanho
metric system
unit conversion
physical quantities
| code | slug | name | description | category | quantity | symbol | siExpression | metricEquivalent |
|---|---|---|---|---|---|---|---|---|
| SI-01 | meter | Meter | The SI base unit of length. | SI基本単位 | Length | m | ||
| SI-02 | kilogram | Kilogram | The SI base unit of mass. | SI基本単位 | Mass | kg | ||
| SI-03 | second | Second | The SI base unit of time. | SI基本単位 | Time | s | ||
| SI-04 | ampere | Ampere | The SI base unit of electric current. | SI基本単位 | Electric Current | A | ||
| SI-05 | kelvin | Kelvin | The SI base unit of thermodynamic temperature. | SI基本単位 | Thermodynamic Temperature | K | ||
| SI-06 | mole | Mole | The SI base unit of amount of substance. | SI基本単位 | Amount of Substance | mol | ||
| SI-07 | candela | Candela | The SI base unit of luminous intensity. | SI基本単位 | Luminous Intensity | cd | ||
| SI-D01 | hertz | Hertz | The SI derived unit of frequency. | SI組立単位 | Frequency | Hz | s⁻¹ | |
| SI-D02 | newton | Newton | The SI derived unit of force. | SI組立単位 | Force | N | kg·m/s² | |
| SI-D03 | pascal | Pascal | The SI derived unit of pressure and stress. | SI組立単位 | Pressure, Stress | Pa | N/m² | |
| SI-D04 | joule | Joule | The SI derived unit of energy, work, and heat. | SI組立単位 | Energy, Work, Heat | J | N·m | |
| SI-D05 | watt | Watt | The SI derived unit of power. | SI組立単位 | Power | W | J/s | |
| SI-D06 | coulomb | Coulomb | The SI derived unit of electric charge. | SI組立単位 | Electric Charge | C | A·s | |
| SI-D07 | volt | Volt | The SI derived unit of electric potential and voltage. | SI組立単位 | Electric Potential, Voltage | V | W/A | |
| SI-D08 | ohm | Ohm | The SI derived unit of electric resistance. | SI組立単位 | Electric Resistance | Ω | V/A | |
| SI-D09 | degree-celsius | Degree Celsius | The SI derived unit of Celsius temperature. | SI組立単位 | Celsius Temperature | °C | K | |
| SI-D10 | liter | Liter | A non-SI unit accepted for use with the SI for volume. | SI併用単位 | Volume | L | dm³ | |
| IMP-01 | inch | Inch | A unit of length in the Imperial and US customary systems. | ヤード・ポンド法（長さ） | Length | in | 2.54 cm | |
| IMP-02 | foot | Foot | A unit of length in the Imperial and US customary systems. | ヤード・ポンド法（長さ） | Length | ft | 30.48 cm | |
| IMP-03 | yard | Yard | The base unit of length in the Imperial and US customary systems. | ヤード・ポンド法（長さ） | Length | yd | 0.9144 m | |
| IMP-04 | mile | Mile | A unit of long distance in the Imperial and US customary systems. | ヤード・ポンド法（長さ） | Length | mi | 1.609344 km | |
| IMP-05 | ounce-mass | Ounce | A unit of mass in the Imperial and US customary systems. | ヤード・ポンド法（質量） | Mass | oz | 28.3495 g | |
| IMP-06 | pound | Pound | The base unit of mass in the Imperial and US customary systems. | ヤード・ポンド法（質量） | Mass | lb | 453.59237 g | |
| IMP-07 | gallon-us | Gallon (US) | A unit of liquid volume used in the United States. | ヤード・ポンド法（体積） | Volume | gal | 3.78541 L | |
| IMP-08 | gallon-uk | Gallon (Imperial) | A unit of liquid volume used in the United Kingdom. | ヤード・ポンド法（体積） | Volume | gal | 4.54609 L | |
| JPN-01 | sun | Sun | A unit of length in the Japanese Shakkanho system. | 尺貫法（長さ） | Length | 寸 | 3.0303 cm | |
| JPN-02 | shaku | Shaku | The base unit of length in the Japanese Shakkanho system. | 尺貫法（長さ） | Length | 尺 | 30.303 cm | |
| JPN-03 | ken | Ken | A unit of length used in Japanese architecture. | 尺貫法（長さ） | Length | 間 | 1.81818 m | |
| JPN-04 | ri | Ri | A unit of long distance in the Japanese Shakkanho system. | 尺貫法（長さ） | Length | 里 | 3.927 km | |
| JPN-05 | monme | Monme | A unit of mass in the Japanese Shakkanho system. | 尺貫法（質量） | Mass | 匁 | 3.75 g | |
| JPN-06 | kin | Kin | A unit of mass in the Japanese Shakkanho system. | 尺貫法（質量） | Mass | 斤 | 600 g | |
| JPN-07 | kan | Kan | The base unit of mass in the Japanese Shakkanho system. | 尺貫法（質量） | Mass | 貫 | 3.75 kg | |
| JPN-08 | tsubo | Tsubo | A unit of area in the Japanese Shakkanho system. | 尺貫法（面積） | Area | 坪 | 3.30579 m² | |
| JPN-09 | tan-area | Tan | A unit of land area in the Japanese Shakkanho system. | 尺貫法（面積） | Area | 反 | 991.736 m² | |
| JPN-10 | go | Go | A unit of volume in the Japanese Shakkanho system. | 尺貫法（体積） | Volume | 合 | 180.39 mL | |
| JPN-11 | sho | Sho | A unit of volume in the Japanese Shakkanho system. | 尺貫法（体積） | Volume | 升 | 1.8039 L | |
| JPN-12 | koku | Koku | A unit of volume in the Japanese Shakkanho system. | 尺貫法（体積） | Volume | 石 | 180.39 L |