This contribution to SpringerBriefs in Green Chemistry outlines and discusses the four major green chemistry metrics ‎(‎atom economy‎,‎ reaction mass efficiency‎,‎ E factor and process mass intensity‎)‎‎,‎ at a level that is comprehensible by upper‎-level undergraduates‎.‎ Such students have previously received fundamental training in organic chemistry basics‎,‎ and are ideally positioned to learn about green chemistry principles‎,‎ of which metrics is one foundational pillar‎.‎ Following this‎,‎ other green metrics in common use are discussed‎,‎ along with applications that allow important calculations to be easily undertaken‎.‎ Finally‎,‎ an introduction to metrics in the context of life cycle analyses is presented‎.‎ It should be noted that no other available publication teaches green chemistry metrics in detail with an emphasis on educating undergraduates‎,‎ whilst simultaneously providing a contemporary industrial flavour to the material‎.‎