Radio continuum size (in terms of half-light radius, R_eff) of galaxies on and above the MS as a function of redshift. Only SFGs with log(M_⋆/M_⊙) > 10.5 are included. Filled data points (squares and circles) show the median size for SFGs (above and on the MS) in the different redshift bins probed in this work. Vertical bars show the 95% interval confidence of the median, while horizontal bars represent the redshift bin width. Gray shaded region illustrates the growth curve derived in the UV-optical for UV-luminous SFGs given by R_eff/kpc = (4.78 ± 0.68)(1 + z)^{(−0.84 ± 0.11)} (Shibuya et al. 2015). Red and blue dotted lines show the linear fit to parametrize the redshift evolution of the median radio continuum size as R_eff/kpc = (2.1 ± 0.2)(1 + z)^{(−0.26 ± 0.08)} and R_eff/kpc = (0.6 ± 0.4)(1 + z)^{(0.12 ± 0.14)} for SFGs on and above the MS, respectively.