Conversion

Convert kilopascals (kPa) to standard atmospheres (atm), or convert atm to kPa, with adjustable displayed rounding.

Convert atmospheres to bar or bar to atmospheres, see pascals, and check the percent error from using 1 atm = 1 bar.

Convert bar to atm or atm to bar with exact pascal factors, rounding control, and a gauge-pressure helper.

Convert L/100 km to MPG or MPG to L/100 km, with US and Imperial MPG checks to prevent gallon mix-ups.

Convert MPG and L/100 km with US or UK gallons, plus optional trip fuel in liters and gallons.

Convert km/L to US or Imperial MPG, plus L/100 km and gallons per 100 miles from a rating or trip data.

Convert MPG to km/L or km/L to MPG with US and UK gallon choices, L/100 km, rounding, and an alternate gallon check.

Convert joules to thermochemical calories (cal) and food Calories (kcal) without mixing up units that differ by 1,000.

Convert calories to J, kJ, or MJ and choose small calories or food Calories to avoid the 1000x mix-up.

Convert joules, kilojoules, or megajoules to International Table BTU and choose the displayed decimal places.