The adjustable tape measure clip includes a strip of spring steel folded over to form a primary spring with opposing leaves, the inner leaf being adapted for attachment to the case of the tape measure. The inner leaf includes a secondary spring for adjusting the spring force of the primary spring on the leaves of the clip. A mounting screw, which mounts the spring clip onto the case of the tape measure, also engages the secondary spring on the inner leaf to adjust the secondary spring force on the primary spring. As the screw is rotated, the secondary spring varies the primary spring force and thus adjusts the free clip width between the leaves to either increase or decrease the gripping pressure of the clip on the user's apparel.