The invention relates to a one-piece protective toe cap for safety footwear, forming a concave frame consisting of a front wall with connected side walls, the upper edges of which are joined by a concave surface along the profile of the last. The contour or edge of the flange of the toe cap is provided with a recess in order to house a tab and provide comfort, as well as improving the appearance of the footwear (not shown in these documents). The design withstands impact tests of approximately 101.7 to 146.7 Joules (10.4 to 14.95 kgf-m), leaving clearance of approximately 11 mm to 14 mm in the capped shoe and not only at the tip of the cap.