In this work, the electrostrictive proprties of lead-free (Ba0.8Ca0.2)(Ti0.7Zr0.3)O3 piezoceramics that were synthesized via solid state sintering method were investigated. These ceramics were sintered in the sintering range of 1350-1550 °C and the effects of sintering temperature on electostrictive behavior was studied. Crystal phases and microstructure were studied with X-ray diffraction (XRD) and scanning electron microscopy (SEM) and the polarization and strain loops were used to calculate the electrostrictive coefficients. Our results revealed that the BZT-50BCT samples at 1350 °C with the highest strain and the lowest Pr values at T=100 °C showed the best electrostrictive coefficients: Q33=0.058 m4/C2, and M33=6.1×10-16 m2/V2. These values are higher than previous reports on BZT-50BCT composition and enables this material to compete with the lead-based electrorective materilas