This study reports the process of cultural adaptation of the Caring Behaviors Assessment tool for the Spanish language, and determine its validity and reliability. We used a mixed‐methods approach with a sample of adult participants after translation and adjustment, correlations and multiple regressions were used to explain differences in perception. Internal consistency and reliability were determined by using Cronbach's alpha. While slight modifications to syntax, language, and the interval scale were necessary to enable better comprehension, all items had high average scores as did the seven subscales. Additionally, similarities with previous literature suggest cultural suitability of the instrument across countries. This version of the tool was judged to be valid and reliable, and will facilitate care measurability and theoretical sensitivity in Spanish‐speaking countries.