Background. Hypertension is the one of the important reasons of mortality and morbidity worldwide which affects around 6% to 32% of the general population. It has been documented that the serum calcium level has the impact on cardiovascular functions. Patients with essential hypertension display altered calcium metabolism, including elevated cytosolic calcium, reduced serum calcium levels and augmented urine excretion of calcium. Therefore, this study was undertaken in the direction for evaluate the link of calcium in newly diagnosed hypertensive patients. Materials and methods. This cross-sectional study was conducted in isolated newly diagnosed essential Hypertensive subjects who came to the hypertensive OPD, who were free from any other illness or under any medication. 100 cases and 50 controls were included in this study. Body mass index, Blood pressure and serum calcium levels were evaluated in the enrolled subjects. Student's t test and chi-square test were used for statistical analysis. Results. The mean serum calcium in newly diagnosed hypertensive group was 8.35 ± 1.04 and in control group it was 10.04 ± 0.66. The mean corrected calcium in newly diagnosed hypertensive group was 8.40 ± 1.01 and in control group it was 9.87 ± 4.76. These results were highly statistically significant p=0.000. Negative correlation was found between serum calcium and blood pressure among our subjects. Conclusion. Patients with essential hypertension had lower corrected serum calcium levels, and there was a substantial inverse association (negative correlation) between corrected serum calcium levels and blood pressures. So, while treating patients with hypertension, more attention to be given for the serum calcium levels.