Dimensional changes of single jersey fabrics made from $LincLITE^{(R)}$ and conventional yarns(39 tex and 48 tex) with different twist factors and fabric tightness factors are investigated under dry-, steam- and full- relaxation treatments. Results showed that linear and area shrinkages, fabric density and stitch density values were affected by tightness factors, relaxation treatment, yarn twist and feeder blending. Generally, higher length shrinkages and width increases were reported with $LincLITE^{(R)}$ and conventional fabrics. Tightness factors and twist factors significantly affected $LincLITE^{(R)}$ and insignificantly affected conventional fabrics in concern of change of shape and area shrinkages. Thus, fabric density values and reciprocal of stitch lengths showed linear correlations with intercepts, which decreased on full relaxation. Also, it showed higher regression correlation coefficient factors from $LincLITE^{(R)}$ and conventional fabrics.