${\text{B}}_{0.77}$${\text{Ca}}_{0.23}$TiO₃ (BCT) single crystal has been widely studied as a promising lead-free ferroelectric material. In this work, high-quality BCT crystal was successfully grown by the Czochralski (CZ) method. The as-grown crystal is crack-free and shows black coloration. It possesses a high dielectric stability over a wide temperature range, while the dielectric loss is rather small below 90${}^{\circ }$C. Furthermore, it possesses excellent ferroelectric properties with residual polarization strength ($P_r$) and coercive field ($E$${}_c$) of 17.93 $\mu$C/cm² and 8.47 kV/cm, respectively. Besides, BCT crystal shows large electromechanical coupling factors, with $k$${}_t$, $k_{31}$, $k_{33}$ and $k_{15}$ of 0.535, 0.254, 0.714 and 0.721, respectively. The piezoelectric coefficients $d_{31}$, $d_{33}$ and $d_{15}$ are measured to be − 36.5, 130 and 246 pC/N, respectively.