AbstractThe relationship between length and weight was calculated for nine taxa of eucalypt forest and woodland invertebrates from south‐eastern New South Wales. Length and weight were highly correlated. For the majority of taxa the relationship was best described by a power model. There were no significant differences between the length‐weight regressions of Australian and North American taxa. This strengthens the value of generalized regressions for estimates of biomass from invertebrate length data in ecological stud