To calculate the pounds per square inch (psi) from the compression ratio, one needs the compression ratio and the atmospheric pressure measurement. Then, the first number in the compression ratio is multiplied by the atm... More »

The compression ratio of an internal combustion engine is the ratio of the volume of the cylinder's largest capacity to its lowest capacity. There is a compression ratio calculator at, as of 2015. More » Vehicles Car Parts & Maintenance Engine

Japanese automaker Mazda has developed an innovative technology called SKYACTIV that allows engines to reach the highest gasoline compression ratio in the world. SKYACTIV engines can achieve a compression ratio of 14.0:1... More » Vehicles Car Parts & Maintenance Engine

One inch of water, as measured using a pressure gauge at four degrees Celsius, is equivalent to 0.036127291827 pounds per square inch (PSI). This conversion can be found at More »

Pounds per square inch cannot be converted to ft-lbs because psi is a measurement of pressure, whereas ft-lbs is a measurement of total energy. Neither one is in the International System of Units as a primary form of mea... More »

Converting from pounds per square inch to pascals is a simple unit conversion problem that can be solved in a short amount of time with pencil and paper or calculator. Simply multiply the known information by the convers... More »

Millibars (mbar) and pounds per square inch (psi) are two units that measure pressure. They can be converted at a rate of 1 psi per 68.95 mbar, or 1 mbar per .0145 psi. More » Business & Finance Currency & Conversions