Coronavirus Anxiety Scale (CAS) is a widely used measure that captures somatic symptoms of coronavirus-related anxiety.In a large-scale collaboration spanning 60 countries with 21,513 respondents, we examined CAS's measurement invariance and the evidence of convergent validity of CAS scores in relation to the fear of and the satisfaction with life (SWLS-3) scales.We utilized both conventional exact invariance tests and alignment procedures, revealing that the single-factor model fit the data well in almost all countries.Partial scalar invariance was supported in a subset of 56 countries.To ensure the robustness of results, given the unbalanced samples, we employed resampling techniques both with and without replacement and found the results were more stable in larger samples.The alignment procedure demonstrated a high degree of measurement invariance with 9% of the parameters exhibiting non-invariance.We also conducted simulations of alignment using the parameters estimated in the current model.This demonstrated the reliability of the means but indicated challenges in estimating the latent variances.Positive and strong correlations between CAS and FCV-19S estimated with three different approaches were found in most countries.Correlations of CAS and SWLS-3 were weak and negative, but significantly differed from zero in several countries.Overall, the study provided support for the measurement invariance of the CAS and offered evidence of its convergent validity while also highlighting issues with variance estimation.