Ultimate Converter is the elegant, powerful solution that goes beyond standard units. Whether you are a professional pilot calculating Jet A-1 /AVGAS fuel density, an engineer, or a shopper needing a quick shoe size reference, we've got you covered.

Why?

Aviation Mode: Specialized features for pilots and ground crew, including precise Volume/Weight conversions for JET A/A1, AVGAS, and Oil, with the ability to interactively adjust density (kg/L) for superior accuracy.

Global Sizing Charts: Never guess your fit again! Instantly convert sizes for Shoes, Tops, and Pants across US, EU, UK, JP, CN, and MEX standards.

Essential Categories: Fast and reliable conversions for Length, Weight, Temperature, Pressure, Angle (including advanced Radian/Degree conversions), and Number Systems (Binary, Hex, Decimal).

Download Ultimate Converter and simplify all your complex conversions in one beautiful, intuitive app.