All Unit Converters tools
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Speed and Distance Converter: mph, km/h, Miles and Kilometres
Convert mph, km/h, m/s and knots, plus miles, kilometres, metres and feet.
About these tools
This section covers pressure, torque, power, distance and fuel economy. Car specs use mixed units: PSI and bar, lb-ft and Nm, hp and kW, miles and kilometres. These converters give you the number straight away so you can read any spec sheet or manual.
Each converter includes a short guide with the formula, a quick reference table and where the unit is used on a car.
Common questions
What is the difference between PSI and bar?
They are both units of pressure. One bar is about 14.5 PSI, and tire pressures are shown in either depending on the region.
Is lb-ft the same as Nm?
No. They are both torque units: one lb-ft equals about 1.356 Nm.
How do I convert MPG to L/100 km?
Divide 235.2 by the US MPG figure. The scales run in opposite directions.