A host of car performance metrics take weight into consideration to measure performance. For example power to weight indicators like BHP Per Ton and Torque Per Ton. The vast majority of the specifications we provide include the weight, curb weight (kerb weight) of the car. The weight gives us an indication of not only the acceleration and top speed potential but also how the vehicle handles in the bends.
Use the calculators below to convert the weights from kg to lb or from lb to kg. Once you have done this you could compare the power to weight with AutoSnout.com's bhp per ton or kw per ton lists. BHP Per Ton List or why not find out the BHP of your car and calculate what it can do the quarter mile in here: Car Quarter Mile Calculator