Process Associates is an engineering resource website that provides tools and calculators for engineers and technicians. The site offers a variety of conversion calculators for different units and dimensions, including pipe flow, Reynolds number, metric conversions, and piping information. It aims to assist users in making flow-related calculations, determining fluid behavior, and converting units of measurement. Process Associates focuses on serving industries such as oil and gas exploration, production, refining, chemicals, and plastics in the United States, with plans to expand to other sectors in the process industry.