For a one-page version of this tutorial, see How to Apply a Tourniquet.
Before using a tourniquet, try using less damaging steps to control bleeding. If the scene is unsafe, and there is no time to attempt other steps, tourniquets can be used to control active bleeding.
Getting StartedTo make a tourniquet, use a non-stretchy material, such as terry cloth or a cravat (also known as a triangular bandage), and fold it lengthwise until it's between 1 and 2 inches wide.
Tie the tourniquet around the injured arm or leg, several inches above the injury (the part of the limb closer to the heart). If the injury is below the elbow or knee, you may need to tie the tourniquet above the joint (see photo). Use a common square knot (like tying your shoes without the bow).