Nonlinear optical high-quality single crystals of potassium borodicitrate (KBDC) were grown by low-temperature solution growth slow evaporation technique. The crystal structure and quality of the grown crystal were examined by single-crystal X-ray diffraction and high-resolution X-ray diffraction analysis, respectively. The transmittance spectrum measured from the as-grown crystal exhibits wide range of transparency from UV to visible region. The third-order nonlinear optical properties of the grown crystal were studied using Z-scan technique. The third-order nonlinear susceptibility ((3)) of KBDC single crystal is found to be 4.1130x10(-9)esu. The laser-induced damage threshold for the grown crystal was measured using Nd:YAG laser. Furthermore, the photoconductivity and specific heat capacity of the crystal were measured, and the observed results are discussed in detail.