Power converter

Watts, and the two different horsepowers. 6 units, every one shown at once.

Convert

Value

From

Basis

scale · base watt

—

Every unit at once	Value	Unit

two horsepowers, 1.4% apart

British and American figures use mechanical horsepower; European makers quote PS (Pferdestärke). A 500 hp car and a 500 PS car are not the same car, so both are listed.

Every power pair

30 pages, one for each direction.

Other categories

Mass Kilograms, pounds, stone, ounces and both tons. Temperature Celsius, Fahrenheit, kelvin and Rankine. Length Metric, imperial, and the nautical mile. Volume Litres, and US and Imperial measures kept apart. Speed km/h, mph, knots and metres per second. Energy Joules, calories, watt-hours and BTU. Area Square metres, feet, acres and hectares. Time Seconds through years, with the year defined. Data Decimal MB and binary MiB, kept apart. Data rate Megabits per second versus megabytes per second. Pressure Bar, psi, atmospheres and millimetres of mercury. Angle Degrees, radians, gradians and turns. Frequency Hertz, kilohertz, megahertz and RPM. Force Newtons, kilogram-force and pounds-force. Torque Newton-metres and pound-feet. Fuel economy mpg and L/100 km — where bigger means worse. Density kg/m³, g/cm³ and pounds per cubic foot. Cooking Spoons and cups, with the country stated. Illuminance Lux and foot-candles.