What is the measurement of work expressed in?

The measurement of work is expressed in joules. This unit of measure comes from the International System of Units (SI) and is defined as the amount of work done when a force of one newton moves an object one meter in the direction of the applied force.

While foot-pounds and watts are related to work and power, respectively, they are not standard units for measuring work itself. Foot-pounds is an imperial unit measuring work, but joules is the more widely accepted standard unit. Watts, on the other hand, measure the rate of doing work, indicating how much work is done over a period of time, while newtons measure force, not work. Therefore, joules is the correct and standard unit for expressing work.