直接変換 | UnitCloud

直接変換

UnitCloud は日常、技術、IT、エネルギー、移動、デザインのためのローカル測定ラボです。

変換

Common direct conversions

Inch to Centimetrein → cm長さ Centimetre to Inchcm → in長さ Foot to Metreft → m長さ Metre to Footm → ft長さ Mile to Kilometremi → km長さ Kilometre to Milekm → mi長さ Nautical mile to Kilometrenmi → km長さ Hectare to Square metreha → m²面積 Square metre to Hectarem² → ha面積 Acre to Square metreacre → m²面積 Litre to US gallonl → gal体積 US gallon to Litregal → l体積 Millilitre to Cupml → cup体積 Cup to Millilitrecup → ml体積 Pound to Kilogramlb → kg質量 Kilogram to Poundkg → lb質量

長さ

Inch, foot and mile use fixed factors. Errors usually come from early rounding or from mixing land miles and nautical miles.

表

基準単位m

変換先の値7

出典BIPM SI Brochure · NIST Guide to SI Appendix B

面積

Area scales quadratically. A length factor is not automatically an area factor.

表

基準単位m²

変換先の値3

出典BIPM SI Brochure · NIST Guide to SI Appendix B

Hectare to Square metreha → m²面積 Square metre to Hectarem² → ha面積 Acre to Square metreacre → m²面積

体積

Volume is robust for liquids. For dry ingredients it does not replace weighing because density and packing vary.

表

基準単位l

変換先の値4

出典BIPM SI Brochure · NIST Guide to SI Appendix B

Litre to US gallonl → gal体積 US gallon to Litregal → l体積 Millilitre to Cupml → cup体積 Cup to Millilitrecup → ml体積

質量

Pound is not always the same local unit. UnitCloud uses international avoirdupois values.

表

基準単位g

変換先の値4

出典BIPM SI Brochure · NIST Guide to SI Appendix B

Pound to Kilogramlb → kg質量 Kilogram to Poundkg → lb質量 Ounce to Gramoz → g質量 Gram to Ounceg → oz質量

温度

Temperature uses an offset. Fahrenheit and Kelvin are not pure factor units.

表

基準単位°C

変換先の値4

出典BIPM SI Brochure · NIST Metric SI · NIST Guide to SI Appendix B

Fahrenheit to Celsius°F → °C温度 Celsius to Fahrenheit°C → °F温度 Kelvin to CelsiusK → °C温度 Celsius to Kelvin°C → K温度

データ

KB, MB and GB are decimal. KiB, MiB and GiB are binary. This distinction explains many apparent storage gaps.

表

基準単位Byte

変換先の値6

出典NIST Metric SI Prefixes · NIST Binary Prefixes

Gigabyte to GibibyteGB → GiBデータ Gibibyte to GigabyteGiB → GBデータ Mebibyte to MegabyteMiB → MBデータ Megabyte to MebibyteMB → MiBデータ Bit to Bytebit → Bデータ Terabyte to TebibyteTB → TiBデータ

速度

Knots are nautical miles per hour. mph and knots are not interchangeable imperial speeds.

表

基準単位m/s

変換先の値5

出典BIPM SI Brochure · NIST Guide to SI Appendix B

Knot to Kilometres per hourkn → km/h速度 Kilometres per hour to Knotkm/h → kn速度 Miles per hour to Kilometres per hourmph → km/h速度 Kilometres per hour to Miles per hourkm/h → mph速度 Metres per second to Kilometres per hourm/s → km/h速度

エネルギー

Food calories are kilocalories. Utility bills use kilowatt-hours. Both are energy units, but in different contexts.

表

基準単位J

変換先の値5

出典BIPM SI Brochure · NIST Guide to SI Appendix B

Kilowatt-hour to JoulekWh → Jエネルギー Joule to Kilowatt-hourJ → kWhエネルギー Kilocalorie to Kilojoulekcal → kJエネルギー Kilojoule to KilocaloriekJ → kcalエネルギー British thermal unit to Kilowatt-hourBTU → kWhエネルギー

出力

PS and hp are not identical. Vehicle data often uses metric horsepower, while US/UK contexts often use mechanical horsepower.

表

基準単位W

変換先の値4

出典BIPM SI Brochure · NIST Guide to SI Appendix B

Kilowatt to Metric horsepowerkW → PS出力 Metric horsepower to KilowattPS → kW出力 Kilowatt to Mechanical horsepowerkW → hp出力 Watt to BTU per hourW → BTU/h出力

圧力

bar, psi and atm appear in different fields. Tyre, weather and lab values need context.

表

基準単位Pa

変換先の値4

出典BIPM SI Brochure · NIST Guide to SI Appendix B.8

bar to psibar → psi圧力 psi to barpsi → bar圧力 Kilopascal to psikPa → psi圧力 Atmosphere to baratm → bar圧力

密度

Density depends on temperature, material state and measurement conditions. Unit conversion does not replace material data.

表

基準単位kg/m³

変換先の値2

出典BIPM SI Brochure · NIST Guide to SI Appendix B

Gram per cubic centimetre to Kilogram per cubic metreg/cm³ → kg/m³密度 Kilogram per cubic metre to Gram per cubic centimetrekg/m³ → g/cm³密度

時間

Calendar months and years vary. This family uses fixed seconds for technical durations, not legal deadlines.

表

基準単位s

変換先の値3

出典BIPM SI Brochure · NIST Metric SI

Hour to Secondh → s時間 Day to Hourd → h時間 Week to Dayweek → d時間

角度

Degrees and radians are often mixed in software, geometry and trigonometry. Formulas usually expect a specific angle unit.

表

基準単位rad

変換先の値2

出典BIPM SI Brochure · NIST Guide to SI Appendix B

Degree to Radian° → rad角度 Radian to Degreerad → °角度

力

Force and mass are not the same. Kilogram is mass, newton is force.

表

基準単位N

変換先の値2

出典BIPM SI Brochure · NIST Guide to SI Appendix B.8

Newton to Pound-forceN → lbf力 Pound-force to Newtonlbf → N力

トルク

Torque is not power. Newton metre and hp/kW answer different questions.

表

基準単位N·m

変換先の値2

出典BIPM SI Brochure · NIST Guide to SI Appendix B

Newton metre to Pound-footN·m → lb·ftトルク Pound-foot to Newton metrelb·ft → N·mトルク

燃費

mpg and l/100 km move in opposite directions. Higher mpg means lower consumption; higher l/100 km means higher consumption.

表

基準単位l/100 km

変換先の値3

出典NIST Guide to SI Appendix B

Miles per US gallon to Litres per 100 kilometresmpg US → l/100 km燃費 Litres per 100 kilometres to Miles per US gallonl/100 km → mpg US燃費 Kilometres per litre to Litres per 100 kilometreskm/l → l/100 km燃費

タイポグラフィ

px depends on output context. UnitCloud uses the CSS reference of 96 px per inch.

表

基準単位pt

変換先の値3

出典NIST Guide to SI Appendix B · W3C CSS Values and Units

Point to CSS pixelpt → pxタイポグラフィ CSS pixel to Pointpx → ptタイポグラフィ Millimetre to Pointmm → ptタイポグラフィ

画像解像度

Pixel count and print density are different. Print sizes also need width, height and ppi.

表

基準単位px

変換先の値2

出典NIST Metric SI Prefixes

Megapixel to PixelMP → px画像解像度 Pixel to Megapixelpx → MP画像解像度

周波数

rpm and bpm are events per minute. Hz is events per second.

表

基準単位Hz

変換先の値3

出典BIPM SI Brochure · NIST Metric SI

Hertz to Revolutions per minuteHz → rpm周波数 Revolutions per minute to Hertzrpm → Hz周波数 Megahertz to GigahertzMHz → GHz周波数