Background. Hand grip strength (HGS) is a tool for diagnosing sarcopenia. In this study, we examined some anthropometric and body circumference measurements as determinants for HGS. Methods. This cross-sectional study was conducted with participants (Mongolians, n = 1080, aged 18–70, mean age of 41.2 ± 13.9 years, 33.7% of men) from the “Mon-Timeline” cohort study. To measure HGS, a digital grip strength dynamometer was used. Results. Mean HGS in men was 40.1 ± 10.4 kg and in women was 24.5 ± 5.6 kg. Correlation analysis showed that the strongest correlation with HGS was height (r = 0.712,
p
<
0.001
). Moreover, HGS was inversely correlated with age (r = −0.239,
p
<
0.001
) and thigh circumference (r = −0.070,
p
<
0.01
), while it was positively correlated with body weight (r = 0.309,
p
<
0.001
), neck circumference (r = 0.427,
p
<
0.001
), upper arm circumference (r = 0.108,
p
<
0.0001
), lower arm circumference (r = 0.413,
p
<
0.0001
), and calf circumference (r = 0.117,
p
<
0.0001
). In the multivariate linear regression analysis (unstandardized B coefficient, 95% CI), age (−0.159, −0.188; −0.129), sex (−9.262, −10.459; −8.064), height (0.417, 0.357; 0.478), lower arm circumference (1.003, 0.736; 1.270), and calf circumference (−0.162, −0.309; −0.015) were significantly associated with HGS. Conclusions. When detecting sarcopenia using HGS, it is important to take into account variables such as body height and body circumference.