Since C++11, the STL contains some new types and functions for taking, measuring, and displaying time. This part of the library exists in the std::chrono namespace and has some sophisticated details.

In this recipe, we will concentrate on measuring time spans and how to convert the result of the measurement between units, such as seconds, milliseconds, and microseconds. The STL provides facilities, which enable us to define our own time units and convert between them seamlessly.