What is spring constant unit?

The unit for spring constant is N/m (newtons per meter) in the SI system. It represents the amount of force required to stretch or compress a spring by one meter. Alternatively, it can also be represented in other units such as lb/in (pounds per inch) or dyn/cm (dynes per centimeter) depending on the system of measurement being used. Spring constant is a measure of the stiffness of the spring, and a higher value of spring constant indicates a stiffer spring.