# Advice 1: How to calculate horsepower

Horse power is the main parameter to calculate the power of the car. Typically, this value is specified in all technical documents of the vehicle. However, sometimes it happens that the calculation of horsepower is determined in kilowatt-hours. Or, for example, the machine has passed a certain upgrade, after which its capacity was increased. In these cases, the owners expect to re-the vehicle power in horsepower.
Instruction
1
If you are going to calculate the horse power of your car, use the Russian and European system of measurement. There is one "horse" is defined as 75 kg x m/s. translations of scientific measurement, this means that one horsepower equals power, which is enough to lift a weight of 75 kg to a height of 1 meter in 1 second of time. Also "horses" are transferred even in the kilowatts. According to this translation 1 HP equals 735,5 W or 0,735 kW. But the maximum speed that can develop an ordinary horse, called boiler horsepower.
2
In accordance with this it is possible to obtain capacity values by translation. For example, if vehicle power is specified in kilowatts, for the "horses" have the specified value in kW divided by 0,735 and get the number of horsepower in this car.
3
One of the easiest ways on how you can calculate the engine power in horsepower (especially after tuning) is to go to the item maintenance or inspection. There is a special computer unit, which determine the number of "horses". For this you need to put the car on the platform of the device and press the pedal to the metal. For the time the machine runs, the computer mechanism will make all the necessary measurements and inform you the result.
4
For the sake of interest you can calculate not only the power of the car, but your own. To correctly make calculations, you need to measure the time (t), for which you will be able to run the stairs a certain height (h). Then the resulting values must be inserted into the formula: m x h/t. here m is the weight of your body. This humorous quiz will help you calculate how much you are hardy and quick in their movements. In addition, these amusing estimates can be great fun for a family night when you can for each family member to calculate its power.

# Advice 2 : How to convert kilowatts

Kilowatt (kW) is a unit of power, i.e. relations work for the length of time for which it is made. However, the power can be measured in other units, and kilowatts, you can easily transfer to any of them by a simple multiplication method.
You will need
• Calculator or Converter
Instruction
1
Often in solving problems it is necessary to translate kilowatts in such units as joules per second (j/s). It is very simple, because one Joule / second equals one watt. Therefore, to convert kilowatts to joules per second, you just need to multiply them by 10 to the third power, i.e. a thousand. For example, 5 kW = 5 x 1000 = 5000 j/s.
2
Another common unit of power is horsepower (HP), but it is not included in the SI system. When translating kilowatts in this unit it is important to clarify what kind of horsepower you mean. In our country more often used metric horsepower. One kilowatt is approximately equal to 1.36 metric HP.. And in the US and partly in the UK under the horsepower refers to the horsepower of electric. One kilowatt is approximately 1.34 HP electric.. there is Also a so-called boiler horsepower. Kilowatt is approximately equal to 0.1 HP. boiler Thus, 5 kW x1 36 = 6,8 metric HP, as well as 5 kW x 1.34 = 6,7 electric HP and 5 kW x 0,1 = 0,5 boiler horsepower.
3
In real life, often found this unit as kilocalories per hour (kcal/h). One kilowatt is approximately equal to 859,85 kcal/h. So, 5 kW can be translated in kilocalories per hour to the following: 5 kW x 859,85 = 4299,25 kcal/h.
4
If we are talking about the USA, in some case you can use the old British unit of power is ft-lb per second. Kilowatt is approximately equal to 737,56 ft-lb/s. So 5 kW = 5 x 737,56 = 3687.8 foot-pounds per second. There are a number of non-si units of power, in certain cases, used in the United States and Britain, but not typical for Russia. Translation of a kilowatt in such units can be realized with the help of online converters.