How long is that piece of wood that I need to complete my project? How do I know if my sandwich from Subway is truly a footlong? How can I convert this measurement from inches to centimeters? All of ...

Unless you work in construction, there’s a good chance you don’t always carry a tape measure with you. So what do you do when you stumble upon something, and you really need to know exactly how big it ...

The world’s first spatial ruler for your iPhone, capable of measuring distance and length in centimeters, meters, inches, and feet, has been unveiled. Using the iPhone Ruler app, users can save ...