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Date Calculator

⚠️ Data Entry Aid Only This tool is for data entry assistance only. We are not responsible for errors. You must verify all calculations against the study protocol and source documents. No PHI should be entered.

Interested in getting certified? Protocol compliance and date calculations come up in both the CCRC and CCRP exams. CCRC vs CCRP Guide →
Considering a career in clinical research? Precision with dates and windows is a skill every coordinator develops — see what the role really involves. Day in the Life of a CRC →