The Graduate Diploma in Engineering (Chemical) is a postgraduate qualification designed to provide graduates from other engineering or science disciplines with the core knowledge and competencies of chemical engineering. It covers foundational and advanced topics including thermodynamics, fluid mechanics, chemical reaction engineering, process design, mass and energy balances, and process control. The qualification is typically structured as a one-year full-time program (or part-time equivalent) and often serves as either a standalone credential or a pathway into a Master of Engineering (Chemical). It is recognised under the Australian Qualifications Framework (AQF) and may lead to professional membership with Engineers Australia and the Institution of Chemical Engineers (IChemE).

The course is designed for professionals who hold a bachelor's degree in a related but non-congruent discipline — such as chemistry, materials science, mechanical engineering, environmental science, or a related STEM field — and who wish to transition into chemical engineering practice. It suits working professionals seeking to upskill, career changers moving into the resources, energy, or manufacturing sectors, and international graduates looking to have their qualifications recognised within Australia's engineering framework. Students gain a blend of theoretical rigour and applied process engineering skills that prepare them for professional practice.

Key employers of Graduate Diploma in Engineering (Chemical) graduates in Australia include major resources and mining companies, oil and gas operators, food and beverage manufacturers, pharmaceutical producers, water utilities, environmental consultancies, petrochemical refineries, and government bodies. Industries such as mining and minerals processing, LNG and petroleum, renewable energy, biotechnology, polymer manufacturing, and environmental engineering all actively recruit chemical engineering graduates across every major Australian city and region.

Applicants to the Graduate Diploma in Engineering (Chemical) typically require a completed bachelor's degree in a cognate STEM discipline such as chemistry, physics, materials science, mechanical engineering, environmental engineering, or a related field. Most providers require a minimum GPA equivalent to a Credit average (approximately 5.0 on a 7-point scale or 60–65%). Applicants from an engineering background that is not in chemical engineering — for example, civil, electrical, or mechanical engineering — may be admitted directly, though bridging units may be required. Applicants from science backgrounds such as chemistry or biochemistry are generally eligible, as the qualification is specifically designed to bridge scientific training with engineering professional practice. Institutions assess applications on a case-by-case basis and may consider relevant professional work experience as part of the evaluation.

For applicants who do not hold a recognised bachelor's degree, some providers will consider a minimum of an Australian Advanced Diploma in Engineering combined with at least five years of technical work experience at a technologist level or above in a relevant engineering field. International applicants and non-native English speakers are required to demonstrate English language proficiency, typically through IELTS (Academic) with an overall band score of 6.0–6.5, with no individual band below 5.5 or 6.0 depending on the institution, or equivalent scores through TOEFL iBT, PTE Academic, or Cambridge C1 Advanced. Where prior study was conducted entirely in English, certified documentation from the institution may be accepted in lieu of a formal English language test. Applicants should confirm specific requirements with their chosen provider, as entry criteria can vary between institutions and intakes.