Home » Calculators » Crown rump lengthCrown rump length Number of weeksUnit mmcm Please, Enter all values correctly.Crown Rump Length PrevPreviousWeekly pregnancy weight gain NextUltrasound gestation periodNext How useful was this post? Click on a star to rate it! Submit Rating Average rating 0 / 5. Vote count: 0 No votes so far! Be the first to rate this post.