All Unit Converters tools
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Towing Capacity Calculator: Trailer Weight, Tongue Weight and Payload
Check your loaded trailer against the tow rating and see tongue weight and payload left.
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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.
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EV Charging Cost Calculator: Cost per Charge and per Mile
Estimate what a charge costs, how much range it adds and the cost per mile.
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Oil Change Interval Calculator: When Is Your Next Oil Change Due?
Find out when your next oil change is due by mileage and by date.
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Car Loan EMI Calculator: Monthly Payment and Total Interest
Work out your monthly car loan payment, total interest and total repaid.
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MPG Calculator: Miles Per Gallon and Cost Per Mile
Turn miles and gallons into MPG, L/100 km, fuel cost and cost per mile.
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Window Tint VLT Calculator: Film + Glass Percentage
Find the real combined VLT of tint film on your glass and compare it with your local limit.
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Tire Size Calculator: Compare Diameter and Speedometer Error
Compare two tire sizes and see the diameter change, real speed and revolutions per mile.
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.